- Yale Medicine Multispecialty800 Boston Post RoadGuilford, CT 06437
Carolyn Fredericks, MD
Biography
Carolyn Fredericks, MD, is a neurologist who specializes in diagnosing and treating patients with cognitive and behavioral concerns, including Alzheimer’s disease, memory disorders, and frontotemporal disease. She also sees patients with rarer brain disorders, such as posterior cortical atrophy, logopenic progressive aphasia, corticobasal syndrome, and progressive supranuclear palsy.
At initial evaluation visits, Dr. Fredericks encourages patients to bring a loved one, friend, or caregiver who knows them very well. “Often, as you can imagine, the patient may not see the entire picture of what has been going on,” she says. During the first visit, Dr. Fredericks asks detailed questions around medical history and does cognitive testing to test memory, language, attention, and spatial functions. She also conducts a neurological exam that checks a range of abilities, including a patient’s motor system, reflexes, and coordination.
“I get a deep satisfaction from walking through the treatment process with a family, offering resources and medications that can help the patient feel better, even though it won’t make the illness go away,” Dr. Fredericks says. “Of course, I love it when I’m able to reverse a process for someone. Sometimes, we will learn that a patient’s thyroid is not working well or that they have an autoimmune condition we can treat. Those kinds of catches are amazing to be a part of.”
Dr. Fredericks dedicates time outside of treating patients to research focused on understanding what the brain looks like before symptoms of Alzheimer’s disease begin to appear by comparing them with the brains of people who are aging in a healthy way. She also investigates more rare forms of Alzheimer’s disease that affect primarily affect a person’s ability to use language and spatial perception. As a member of Yale’s Clinical Neuroscience Imaging Center, she uses advanced imaging tools to map out how proteins associated with Alzheimer’s disease spread throughout functional networks in the brain.
“Dementia is never a normal part of aging,” Dr. Fredericks says. “This research will help us develop better treatment targets and earlier interventions for the future.”
Titles
- Assistant Professor of Neurology
Education & Training
- FellowMemory and Aging Center, University of California, San Francisco (2016)
- ResidentUniversity of California, San Francisco (2014)
- ResidentJohns Hopkins Hospital (2012)
- InternStanford University Hospital (2011)
- MDStanford University School of Medicine (2010)
- BABrown University, Classics (2004)
- BSBrown University, Neuroscience (2004)
Additional Information
- United Council for Neurologic Subspecialties, Behavioral Neurology & Neuropsychiatry (2018)
- AB of Psychiatry & Neurology, Neurology (2014)
- de Bruin H, Groot C, Barthel H, Bischof G, Blazhenets G, Boellaard R, Boon B, Brendel M, Cash D, Coath W, Day G, Dickerson B, Doering E, Drzezga A, van Dyck C, van Eimeren T, van der Flier W, Fredericks C, Fryer T, van de Giessen E, Gordon B, Graff-Radford J, Grinberg L, Hansson O, Hobbs D, Hoenig M, Höglinger G, Irwin D, Jones P, Josephs K, Katsumi Y, La Joie R, Lee E, Levin J, Malpetti M, McGinnis S, Mecca A, Mohanty R, Nasrallah I, O'Brien J, O'Dell R, Palleis C, Perneczky R, Phillips J, Putcha D, Rabinovici G, Rahmouni N, Rosa-Neto P, Rowe J, Rullmann M, Sabri O, Saur D, Schildan A, Schott J, Schroeter M, Seeley W, Servaes S, Sintini I, Smith R, Spina S, Stevenson J, Stomrud E, Strandberg O, Therriault J, Tideman P, Touroutoglou A, Trainer A, Visser D, Wekselman F, Weston P, Whitwell J, Wolk D, Yong K, Pijnenburg Y, Franzmeier N, Ossenkoppele R. Connectivity as a universal predictor of tau progression in atypical Alzheimer’s disease. Brain 2025, awaf279. PMID: 40810361, DOI: 10.1093/brain/awaf279.
- Abuwarda H, Trainer A, Horien C, Shen X, Moret S, Ju S, Constable R, Fredericks C. Whole-brain functional connectivity predicts regional tau PET in preclinical Alzheimer’s disease. Brain Communications 2025, 7: fcaf274. PMID: 40735265, PMCID: PMC12305425, DOI: 10.1093/braincomms/fcaf274.
- Tejavibulya L, Horien C, Fredericks C, Ficek B, Westwater M, Scheinost D. Functional connectome correlates of laterality preferences: Insights into Hand, Foot, and Eye Dominance Across the Lifespan. ENeuro 2025, eneuro.0580-24.2025. PMID: 40473471, DOI: 10.1523/eneuro.0580-24.2025.
- Vin R, Moret S, Yi H, Lawrence M, Santini V, Cedarbaum J, Fredericks C, Powers A. 12. Neural Signatures of Hallucination Emergence in Dementia With Lewy Bodies. Biological Psychiatry 2025, 97: s100. DOI: 10.1016/j.biopsych.2025.02.249.
- Wilson E, Umans J, Swarovski M, Minhas P, Mendiola J, Midttun Ø, Ulvik A, Shahid-Besanti M, Linortner P, Mhatre S, Wang Q, Channappa D, Corso N, Tian L, Fredericks C, Kerchner G, Plowey E, Cholerton B, Ueland P, Zabetian C, Gray N, Quinn J, Montine T, Sha S, Longo F, Wolk D, Chen-Plotkin A, Henderson V, Wyss-Coray T, Wagner A, Mormino E, Aghaeepour N, Poston K, Andreasson K. Parkinson’s disease is characterized by vitamin B6-dependent inflammatory kynurenine pathway dysfunction. Npj Parkinson's Disease 2025, 11: 96. PMID: 40287426, PMCID: PMC12033312, DOI: 10.1038/s41531-025-00964-7.
- Abuwarda H, Trainer A, Horien C, Shen X, Ju S, Constable T, Fredericks C. Whole-brain functional connectivity predicts tau PET in preclincal Alzheimer’s disease (N4.002). Neurology 2025, 104 DOI: 10.1212/wnl.0000000000210639.
- Trelle A, Young C, Vossler H, Benitez J, Cody K, Mendiola J, Swarovski M, Le Guen Y, Feinstein I, Butler R, Channappa D, Romero A, Park J, Shahid‐Besanti M, Corso N, Chau K, Smith A, Skylar‐Scott I, Yutsis M, Fredericks C, Tian L, Younes K, Kerchner G, Deutsch G, Davidzon G, Sha S, Henderson V, Longo F, Greicius M, Wyss‐Coray T, Andreasson K, Poston K, Wagner A, Mormino E, Wilson E. Plasma Aβ42/Aβ40 is sensitive to early cerebral amyloid accumulation and predicts risk of cognitive decline across the Alzheimer's disease spectrum. Alzheimer's & Dementia 2024, 21: e14442. PMID: 39713875, PMCID: PMC11848181, DOI: 10.1002/alz.14442.
- de Bruin H, Groot C, ADNI, Barthel H, Bischof G, Boellaard R, Brendel M, Cash D, Coath W, Day G, Dickerson B, Doering E, Drzezga A, van Dyck C, van Eimeren T, van der Flier W, Fredericks C, Fryer T, van de Giessen E, Gordon B, Graff‐Radford J, Hobbs D, Höglinger G, Hönig M, Irwin D, Jones P, Josephs K, Katsumi Y, Lee E, Levin J, Malpetti M, McGinnis S, Mecca A, Nasrallah I, O'Brien J, O'Dell R, Palleis C, Perneczky R, Phillips J, Pijnenburg Y, Putcha D, Rahmouni N, Rosa‐Neto P, Rowe J, Rullmann M, Sabri O, Saur D, Schildan A, Schott J, Schroeter M, Servaes S, Sintini I, Stevenson J, Therriault J, Touroutoglou A, Trainer A, Visser D, Weston P, Whitwell J, Wolk D, Franzmeier N, Ossenkoppele R. Connectivity as a universal predictor of tau spreading in typical and atypical Alzheimer’s disease. Alzheimer's & Dementia 2024, 20: e085869. PMCID: PMC11714601, DOI: 10.1002/alz.085869.
- Yi H, Li J, Trainer A, Ficek‐Tani B, Constable T, Fredericks C. Functional Connectivity of the Affective Blindsight Pathway in Atypical Alzheimer's Disease. Alzheimer's & Dementia 2024, 20: e093890. PMCID: PMC11712548, DOI: 10.1002/alz.093890.
- Yi H, Li J, Trainer A, Ficek‐Tani B, Constable T, Fredericks C. Functional Connectivity of the Affective Blindsight Pathway in Atypical Alzheimer’s Disease. Alzheimer's & Dementia 2024, 20: e090503. PMCID: PMC11710502, DOI: 10.1002/alz.090503.
- Wang S, Wang Y, Xu F, Tian X, Fredericks C, Shen L, Zhao Y, Initiative F. Sex‐specific topological structure associated with dementia via latent space estimation. Alzheimer's & Dementia 2024, 20: 8387-8401. PMID: 39530632, PMCID: PMC11667551, DOI: 10.1002/alz.14266.
- Ficek-Tani B, Tun S, Frolov A, Sharp E, Fredericks C. A professional musician with progressive visuospatial concerns: a case study and review of musical alexia. Neurocase 2024, 30: 214-225. PMID: 39655794, DOI: 10.1080/13554794.2024.2438413.
- Powers A, Angelos P, Bond A, Farina E, Fredericks C, Gandhi J, Greenwald M, Hernandez-Busot G, Hosein G, Kelley M, Mourgues C, Palmer W, Rodriguez-Sanchez J, Seabury R, Toribio S, Vin R, Weleff J, Woods S, Benrimoh D. A Computational Account of the Development and Evolution of Psychotic Symptoms. Biological Psychiatry 2024, 97: 117-127. PMID: 39260466, PMCID: PMC11634669, DOI: 10.1016/j.biopsych.2024.08.026.
- Li J, Tun S, Ficek-Tani B, Xu W, Wang S, Horien C, Toyonaga T, Nuli S, Zeiss C, Powers A, Zhao Y, Mormino E, Fredericks C. Medial Amygdalar Tau Is Associated With Mood Symptoms in Preclinical Alzheimer’s Disease. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2024, 9: 1301-1311. PMID: 39059466, PMCID: PMC11625605, DOI: 10.1016/j.bpsc.2024.07.012.
- Powers A, Angelos P, Bond A, Farina E, Fredericks C, Gandhi J, Greenwald M, Hernandez-Busot G, Hosein G, Kelley M, Mourgues C, Palmer W, Rodriguez-Sanchez J, Seabury R, Toribio S, Vin R, Weleff J, Woods S, Benrimoh D. A computational account of the development and evolution of psychotic symptoms. Biological Psychiatry 2024, 97: 117-127. PMID: 38699166, PMCID: PMC11065053, DOI: 10.1016/j.biopsych.2024.08.026.
- Oland L, Trainer A, Ficek-Tani B, Li J, Tun S, Ju S, Lacadie C, Constable T, Martin N, Fredericks C. Preliminary Characterization of Language Network Connectivity in a Logopenic Alzheimer’s Population Using Task-based fMRI (S1.006). Neurology 2024, 102 DOI: 10.1212/wnl.0000000000204401.
- Heller S, See C, Singh I, Fredericks C. Cognitive impairment in pulmonary arterial hypertension. Annals Of Clinical And Translational Neurology 2023, 10: 1899-1903. PMID: 37550957, PMCID: PMC10578884, DOI: 10.1002/acn3.51867.
- Ju S, Horien C, Shen X, Abuwarda H, Trainer A, Constable R, Fredericks C. Connectome-based predictive modeling shows sex differences in brain-based predictors of memory performance. Frontiers In Dementia 2023, 2: 1126016. PMID: 39082002, PMCID: PMC11285565, DOI: 10.3389/frdem.2023.1126016.
- Ficek-Tani B, Horien C, Ju S, Xu W, Li N, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in default mode network connectivity in healthy aging adults. Cerebral Cortex 2022, 33: 6139-6151. PMID: 36563018, PMCID: PMC10183749, DOI: 10.1093/cercor/bhac491.
- Ju S, Horien C, Constable T, Fredericks C. Robust prediction of memory and neuroticism in men and women using connectome‐based predictive modeling. Alzheimer's & Dementia 2022, 18 DOI: 10.1002/alz.063015.
- Tun S, Ficek‐Tani B, Frolov A, Sharp E, Fredericks C. A Professional Musician with Sight‐Reading Difficulties: A Case Study. Alzheimer's & Dementia 2022, 18 DOI: 10.1002/alz.059696.
- Wilson E, Young C, Ramos Benitez J, Swarovski M, Feinstein I, Vandijck M, Le Guen Y, Kasireddy N, Shahid M, Corso N, Wang Q, Kennedy G, Trelle A, Lind B, Channappa D, Belnap M, Ramirez V, Skylar-Scott I, Younes K, Yutsis M, Le Bastard N, Quinn J, van Dyck C, Nairn A, Fredericks C, Tian L, Kerchner G, Montine T, Sha S, Davidzon G, Henderson V, Longo F, Greicius M, Wagner A, Wyss-Coray T, Poston K, Mormino E, Andreasson K. Performance of a fully-automated Lumipulse plasma phospho-tau181 assay for Alzheimer’s disease. Alzheimer's Research & Therapy 2022, 14: 172. PMID: 36371232, PMCID: PMC9652927, DOI: 10.1186/s13195-022-01116-2.
- Lin C, Goddard E, Chan K, Ma Y, Di Q, Fredericks C, Chen K. Short-term exposure to PM2.5 and daily all-cause dementia and Alzheimer´s disease mortality in Connecticut: a time-stratified case-crossover study. ISEE Conference Abstracts 2022, 2022 DOI: 10.1289/isee.2022.p-0045.
- Napolioni V, Fredericks CA, Kim Y, Channappa D, Khan RR, Kim LH, Zafar F, Couthouis J, Davidzon GA, Mormino EC, Gitler AD, Montine TJ, Schüle B, Greicius MD. Phenotypic Heterogeneity among GBA p.R202X Carriers in Lewy Body Spectrum Disorders. Biomedicines 2022, 10: 160. PMID: 35052839, PMCID: PMC8774039, DOI: 10.3390/biomedicines10010160.
- Ficek B, Horien C, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in connectivity in the default mode network in healthy aging adults. Alzheimer's & Dementia 2021, 17 DOI: 10.1002/alz.056050.
- Fredericks C. Methylphenidate for Apathy in Alzheimer Disease—Why Should We Care? JAMA Neurology 2021, 78: 1311-1313. PMID: 34570178, DOI: 10.1001/jamaneurol.2021.2942.
- Trelle AN, Carr VA, Wilson EN, Swarovski MS, Hunt MP, Toueg TN, Tran TT, Channappa D, Corso NK, Thieu MK, Jayakumar M, Nadiadwala A, Guo W, Tanner NJ, Bernstein JD, Litovsky CP, Guerin SA, Khazenzon AM, Harrison MB, Rutt BK, Deutsch GK, Chin FT, Davidzon GA, Hall JN, Sha SJ, Fredericks CA, Andreasson KI, Kerchner GA, Wagner AD, Mormino EC. Association of CSF Biomarkers With Hippocampal-Dependent Memory in Preclinical Alzheimer Disease. Neurology 2021, 96: e1470-e1481. PMID: 33408146, PMCID: PMC8055319, DOI: 10.1212/wnl.0000000000011477.
- Mormino EC, Toueg TN, Azevedo C, Castillo JB, Guo W, Nadiadwala A, Corso NK, Hall JN, Fan A, Trelle AN, Harrison MB, Hunt MP, Sha SJ, Deutsch G, James M, Fredericks CA, Koran ME, Zeineh M, Poston K, Greicius MD, Khalighi M, Davidzon GA, Shen B, Zaharchuk G, Wagner AD, Chin FT. Tau PET imaging with 18F-PI-2620 in aging and neurodegenerative diseases. European Journal Of Nuclear Medicine And Molecular Imaging 2020, 48: 2233-2244. PMID: 32572562, PMCID: PMC7755737, DOI: 10.1007/s00259-020-04923-7.
- Trelle AN, Carr VA, Guerin SA, Thieu MK, Jayakumar M, Guo W, Nadiadwala A, Corso NK, Hunt MP, Litovsky CP, Tanner NJ, Deutsch GK, Bernstein JD, Harrison MB, Khazenzon AM, Jiang J, Sha SJ, Fredericks CA, Rutt BK, Mormino EC, Kerchner GA, Wagner AD. Hippocampal and cortical mechanisms at retrieval explain variability in episodic remembering in older adults. ELife 2020, 9: e55335. PMID: 32469308, PMCID: PMC7259949, DOI: 10.7554/elife.55335.
- Koran M, Davidzon G, Azevedo C, Toueg T, Nadiadwala A, Castillo J, Hall J, Sha S, Fredericks C, Greicius M, Wagner A, Zaharchuk G, Chin F, Mormino E. P4‐576: CONCORDANCE BETWEEN 18F‐PI‐2620 TAU PET/MRI IMAGING AND CLINICAL OUTCOMES IN ALZHEIMER DISEASE AND OTHER TAUOPATHIES. Alzheimer's & Dementia 2019, 15: p1541-p1541. DOI: 10.1016/j.jalz.2019.08.124.
- Pressman PS, Gola K, Shdo SM, Miller BL, Fredericks C, Mielke C, Pelak V, Rankin KP. Relative preservation of facial expression recognition in posterior cortical atrophy. Neurology 2019, 92: e1064-e1071. PMID: 30760634, PMCID: PMC6442010, DOI: 10.1212/wnl.0000000000007075.
- Fredericks CA, Brown JA, Deng J, Kramer A, Ossenkoppele R, Rankin K, Kramer JH, Miller BL, Rabinovici GD, Seeley WW. Intrinsic connectivity networks in posterior cortical atrophy: A role for the pulvinar? NeuroImage Clinical 2018, 21: 101628. PMID: 30528957, PMCID: PMC6411779, DOI: 10.1016/j.nicl.2018.101628.
- Mormino E, Nadiadwala A, Azevedo C, Guo W, Castillo J, Hall J, Trelle A, Sha S, Jayakumar M, Tanner N, Harrison M, Deutsch G, Fredericks C, Greicius M, Srinivas S, James M, Zaharchuk G, Wagner A, Chin F. P4‐315: TAU PET IMAGING WITH 18F‐PI2620 IN AGING AND ALZHEIMER'S DISEASE. Alzheimer's & Dementia 2018, 14: p1577-p1578. DOI: 10.1016/j.jalz.2018.07.138.
- Trelle A, Bernstein J, Carr V, Deutsch G, Fredericks C, Guerin S, Guo W, Harrison M, Jayakumar M, Jiang J, Kerchner G, Khazhenzon A, Litovsky C, Mormino B, Nadiadwala A, Sha S, Tanner N, Thieu M, Wagner A. P4‐322: THE CONTRIBUTION OF EARLY ALZHEIMER'S DISEASE MARKERS TO INDIVIDUAL DIFFERENCES IN EPISODIC MEMORY IN COGNITIVELY NORMAL OLDER ADULTS. Alzheimer's & Dementia 2018, 14: p1585-p1585. DOI: 10.1016/j.jalz.2018.07.145.
- Fredericks CA, Sturm VE, Brown JA, Hua AY, Bilgel M, Wong DF, Resnick SM, Seeley WW. Early affective changes and increased connectivity in preclinical Alzheimer's disease. Alzheimer's & Dementia Diagnosis Assessment & Disease Monitoring 2018, 10: 471-479. PMID: 30302368, PMCID: PMC6174255, DOI: 10.1016/j.dadm.2018.06.002.
- Fredericks C, Brown J, Deng J, Ossenkoppele R, Rankin K, Kramer J, Miller B, Rabinovici G, Seeley W. [IC‐P‐031]: INTRINSIC CONNECTIVITY NETWORKS IN POSTERIOR CORTICAL ATROPHY: A ROLE FOR THE PULVINAR? Alzheimer's & Dementia 2017, 13: p28-p29. DOI: 10.1016/j.jalz.2017.06.2303.
- Fredericks C, Brown J, Deng J, Ossenkoppele R, Rankin K, Kramer J, Miller B, Rabinovici G, Seeley W. [P2–388]: INTRINSIC CONNECTIVITY NETWORKS IN POSTERIOR CORTICAL ATROPHY: A ROLE FOR THE PULVINAR? Alzheimer's & Dementia 2017, 13: p778-p778. DOI: 10.1016/j.jalz.2017.06.1043.
- Fredericks CA, Koestler M, Seeley W, Miller B, Boxer A, Grinberg LT. Primary chronic traumatic encephalopathy in an older patient with late-onset AD phenotype. Neurology Clinical Practice 2015, 5: 475-479. PMID: 26716062, PMCID: PMC4684670, DOI: 10.1212/cpj.0000000000000161.
- Burish MJ, Fredericks CA, Engstrom JW, Tateo VL, Josephson SA. Predicting success: What medical student measures predict resident performance in neurology? Clinical Neurology And Neurosurgery 2015, 135: 69-72. PMID: 26038279, DOI: 10.1016/j.clineuro.2015.05.007.
- Fredericks C, Sturm V, Hua A, Bilgel M, Wong D, Resnick S, Seeley W. Neuroticism Increases with Age in Cognitively Normal Older Adults who are PiB-Positive (P5.025). Neurology 2015, 84 DOI: 10.1212/wnl.84.14_supplement.p5.025.
- Fredericks C, Sturm V, Hua A, Bilgel M, Wong D, Resnick S, Seeley W. Neuroticism Increases with Age in Cognitively Normal Older Adults who are PiB-Positive (I9-5C). Neurology 2015, 84 DOI: 10.1212/wnl.84.14_supplement.i9-5c.
- Fredericks C, Kvam K, Bear J, Crabtree G, Josephson. A case of progressive multifocal leukoencephalopathy in a lupus patient treated with belimumab. Lupus 2014, 23: 711-713. PMID: 24531080, DOI: 10.1177/0961203314524292.
- Blond BN, Fredericks CA, Blumberg HP. Functional neuroanatomy of bipolar disorder: structure, function, and connectivity in an amygdala–anterior paralimbic neural system. Bipolar Disorders 2012, 14: 340-355. PMID: 22631619, PMCID: PMC3880745, DOI: 10.1111/j.1399-5618.2012.01015.x.
- Fredericks CA, Drabant EM, Edge MD, Tillie JM, Hallmayer J, Ramel W, Kuo JR, Mackey S, Gross JJ, Dhabhar FS. Healthy young women with serotonin transporter SS polymorphism show a pro-inflammatory bias under resting and stress conditions. Brain Behavior And Immunity 2009, 24: 350-357. PMID: 19883751, PMCID: PMC2826575, DOI: 10.1016/j.bbi.2009.10.014.
- Chepenik LG, Fredericks C, Papademetris X, Spencer L, Lacadie C, Wang F, Pittman B, Duncan JS, Staib LH, Duman RS, Gelernter J, Blumberg HP. Effects of the Brain-Derived Neurotrophic Growth Factor Val66Met Variation on Hippocampus Morphology in Bipolar Disorder. Neuropsychopharmacology 2008, 34: 944-951. PMID: 18704093, PMCID: PMC2837582, DOI: 10.1038/npp.2008.107.
- Fredericks C, Kalmar J, Blumberg H. The role of the ventral prefrontal cortex in mood disorders. 2006, 545-578. DOI: 10.1093/acprof:oso/9780198565741.003.0021.
- Blumberg HP, Fredericks C, Wang F, Kalmar JH, Spencer L, Papademetris X, Pittman B, Martin A, Peterson BS, Fulbright RK, Krystal JH. Preliminary evidence for persistent abnormalities in amygdala volumes in adolescents and young adults with bipolar disorder. Bipolar Disorders 2005, 7: 570-576. PMID: 16403182, PMCID: PMC2291299, DOI: 10.1111/j.1399-5618.2005.00264.x.
- Blumberg HP, Leung HC, Skudlarski P, Lacadie CM, Fredericks CA, Harris BC, Charney DS, Gore JC, Krystal JH, Peterson BS. A Functional Magnetic Resonance Imaging Study of Bipolar Disorder: State- and Trait-Related Dysfunction in Ventral Prefrontal Cortices. JAMA Psychiatry 2003, 60: 601-609. PMID: 12796223, DOI: 10.1001/archpsyc.60.6.601.
- Yale Medicine Multispecialty800 Boston Post RoadGuilford, CT 06437
Biography
Carolyn Fredericks, MD, is a neurologist who specializes in diagnosing and treating patients with cognitive and behavioral concerns, including Alzheimer’s disease, memory disorders, and frontotemporal disease. She also sees patients with rarer brain disorders, such as posterior cortical atrophy, logopenic progressive aphasia, corticobasal syndrome, and progressive supranuclear palsy.
At initial evaluation visits, Dr. Fredericks encourages patients to bring a loved one, friend, or caregiver who knows them very well. “Often, as you can imagine, the patient may not see the entire picture of what has been going on,” she says. During the first visit, Dr. Fredericks asks detailed questions around medical history and does cognitive testing to test memory, language, attention, and spatial functions. She also conducts a neurological exam that checks a range of abilities, including a patient’s motor system, reflexes, and coordination.
“I get a deep satisfaction from walking through the treatment process with a family, offering resources and medications that can help the patient feel better, even though it won’t make the illness go away,” Dr. Fredericks says. “Of course, I love it when I’m able to reverse a process for someone. Sometimes, we will learn that a patient’s thyroid is not working well or that they have an autoimmune condition we can treat. Those kinds of catches are amazing to be a part of.”
Dr. Fredericks dedicates time outside of treating patients to research focused on understanding what the brain looks like before symptoms of Alzheimer’s disease begin to appear by comparing them with the brains of people who are aging in a healthy way. She also investigates more rare forms of Alzheimer’s disease that affect primarily affect a person’s ability to use language and spatial perception. As a member of Yale’s Clinical Neuroscience Imaging Center, she uses advanced imaging tools to map out how proteins associated with Alzheimer’s disease spread throughout functional networks in the brain.
“Dementia is never a normal part of aging,” Dr. Fredericks says. “This research will help us develop better treatment targets and earlier interventions for the future.”
Titles
- Assistant Professor of Neurology
Education & Training
- FellowMemory and Aging Center, University of California, San Francisco (2016)
- ResidentUniversity of California, San Francisco (2014)
- ResidentJohns Hopkins Hospital (2012)
- InternStanford University Hospital (2011)
- MDStanford University School of Medicine (2010)
- BABrown University, Classics (2004)
- BSBrown University, Neuroscience (2004)
Additional Information
- United Council for Neurologic Subspecialties, Behavioral Neurology & Neuropsychiatry (2018)
- AB of Psychiatry & Neurology, Neurology (2014)
- de Bruin H, Groot C, Barthel H, Bischof G, Blazhenets G, Boellaard R, Boon B, Brendel M, Cash D, Coath W, Day G, Dickerson B, Doering E, Drzezga A, van Dyck C, van Eimeren T, van der Flier W, Fredericks C, Fryer T, van de Giessen E, Gordon B, Graff-Radford J, Grinberg L, Hansson O, Hobbs D, Hoenig M, Höglinger G, Irwin D, Jones P, Josephs K, Katsumi Y, La Joie R, Lee E, Levin J, Malpetti M, McGinnis S, Mecca A, Mohanty R, Nasrallah I, O'Brien J, O'Dell R, Palleis C, Perneczky R, Phillips J, Putcha D, Rabinovici G, Rahmouni N, Rosa-Neto P, Rowe J, Rullmann M, Sabri O, Saur D, Schildan A, Schott J, Schroeter M, Seeley W, Servaes S, Sintini I, Smith R, Spina S, Stevenson J, Stomrud E, Strandberg O, Therriault J, Tideman P, Touroutoglou A, Trainer A, Visser D, Wekselman F, Weston P, Whitwell J, Wolk D, Yong K, Pijnenburg Y, Franzmeier N, Ossenkoppele R. Connectivity as a universal predictor of tau progression in atypical Alzheimer’s disease. Brain 2025, awaf279. PMID: 40810361, DOI: 10.1093/brain/awaf279.
- Abuwarda H, Trainer A, Horien C, Shen X, Moret S, Ju S, Constable R, Fredericks C. Whole-brain functional connectivity predicts regional tau PET in preclinical Alzheimer’s disease. Brain Communications 2025, 7: fcaf274. PMID: 40735265, PMCID: PMC12305425, DOI: 10.1093/braincomms/fcaf274.
- Tejavibulya L, Horien C, Fredericks C, Ficek B, Westwater M, Scheinost D. Functional connectome correlates of laterality preferences: Insights into Hand, Foot, and Eye Dominance Across the Lifespan. ENeuro 2025, eneuro.0580-24.2025. PMID: 40473471, DOI: 10.1523/eneuro.0580-24.2025.
- Vin R, Moret S, Yi H, Lawrence M, Santini V, Cedarbaum J, Fredericks C, Powers A. 12. Neural Signatures of Hallucination Emergence in Dementia With Lewy Bodies. Biological Psychiatry 2025, 97: s100. DOI: 10.1016/j.biopsych.2025.02.249.
- Wilson E, Umans J, Swarovski M, Minhas P, Mendiola J, Midttun Ø, Ulvik A, Shahid-Besanti M, Linortner P, Mhatre S, Wang Q, Channappa D, Corso N, Tian L, Fredericks C, Kerchner G, Plowey E, Cholerton B, Ueland P, Zabetian C, Gray N, Quinn J, Montine T, Sha S, Longo F, Wolk D, Chen-Plotkin A, Henderson V, Wyss-Coray T, Wagner A, Mormino E, Aghaeepour N, Poston K, Andreasson K. Parkinson’s disease is characterized by vitamin B6-dependent inflammatory kynurenine pathway dysfunction. Npj Parkinson's Disease 2025, 11: 96. PMID: 40287426, PMCID: PMC12033312, DOI: 10.1038/s41531-025-00964-7.
- Abuwarda H, Trainer A, Horien C, Shen X, Ju S, Constable T, Fredericks C. Whole-brain functional connectivity predicts tau PET in preclincal Alzheimer’s disease (N4.002). Neurology 2025, 104 DOI: 10.1212/wnl.0000000000210639.
- Trelle A, Young C, Vossler H, Benitez J, Cody K, Mendiola J, Swarovski M, Le Guen Y, Feinstein I, Butler R, Channappa D, Romero A, Park J, Shahid‐Besanti M, Corso N, Chau K, Smith A, Skylar‐Scott I, Yutsis M, Fredericks C, Tian L, Younes K, Kerchner G, Deutsch G, Davidzon G, Sha S, Henderson V, Longo F, Greicius M, Wyss‐Coray T, Andreasson K, Poston K, Wagner A, Mormino E, Wilson E. Plasma Aβ42/Aβ40 is sensitive to early cerebral amyloid accumulation and predicts risk of cognitive decline across the Alzheimer's disease spectrum. Alzheimer's & Dementia 2024, 21: e14442. PMID: 39713875, PMCID: PMC11848181, DOI: 10.1002/alz.14442.
- de Bruin H, Groot C, ADNI, Barthel H, Bischof G, Boellaard R, Brendel M, Cash D, Coath W, Day G, Dickerson B, Doering E, Drzezga A, van Dyck C, van Eimeren T, van der Flier W, Fredericks C, Fryer T, van de Giessen E, Gordon B, Graff‐Radford J, Hobbs D, Höglinger G, Hönig M, Irwin D, Jones P, Josephs K, Katsumi Y, Lee E, Levin J, Malpetti M, McGinnis S, Mecca A, Nasrallah I, O'Brien J, O'Dell R, Palleis C, Perneczky R, Phillips J, Pijnenburg Y, Putcha D, Rahmouni N, Rosa‐Neto P, Rowe J, Rullmann M, Sabri O, Saur D, Schildan A, Schott J, Schroeter M, Servaes S, Sintini I, Stevenson J, Therriault J, Touroutoglou A, Trainer A, Visser D, Weston P, Whitwell J, Wolk D, Franzmeier N, Ossenkoppele R. Connectivity as a universal predictor of tau spreading in typical and atypical Alzheimer’s disease. Alzheimer's & Dementia 2024, 20: e085869. PMCID: PMC11714601, DOI: 10.1002/alz.085869.
- Yi H, Li J, Trainer A, Ficek‐Tani B, Constable T, Fredericks C. Functional Connectivity of the Affective Blindsight Pathway in Atypical Alzheimer's Disease. Alzheimer's & Dementia 2024, 20: e093890. PMCID: PMC11712548, DOI: 10.1002/alz.093890.
- Yi H, Li J, Trainer A, Ficek‐Tani B, Constable T, Fredericks C. Functional Connectivity of the Affective Blindsight Pathway in Atypical Alzheimer’s Disease. Alzheimer's & Dementia 2024, 20: e090503. PMCID: PMC11710502, DOI: 10.1002/alz.090503.
- Wang S, Wang Y, Xu F, Tian X, Fredericks C, Shen L, Zhao Y, Initiative F. Sex‐specific topological structure associated with dementia via latent space estimation. Alzheimer's & Dementia 2024, 20: 8387-8401. PMID: 39530632, PMCID: PMC11667551, DOI: 10.1002/alz.14266.
- Ficek-Tani B, Tun S, Frolov A, Sharp E, Fredericks C. A professional musician with progressive visuospatial concerns: a case study and review of musical alexia. Neurocase 2024, 30: 214-225. PMID: 39655794, DOI: 10.1080/13554794.2024.2438413.
- Powers A, Angelos P, Bond A, Farina E, Fredericks C, Gandhi J, Greenwald M, Hernandez-Busot G, Hosein G, Kelley M, Mourgues C, Palmer W, Rodriguez-Sanchez J, Seabury R, Toribio S, Vin R, Weleff J, Woods S, Benrimoh D. A Computational Account of the Development and Evolution of Psychotic Symptoms. Biological Psychiatry 2024, 97: 117-127. PMID: 39260466, PMCID: PMC11634669, DOI: 10.1016/j.biopsych.2024.08.026.
- Li J, Tun S, Ficek-Tani B, Xu W, Wang S, Horien C, Toyonaga T, Nuli S, Zeiss C, Powers A, Zhao Y, Mormino E, Fredericks C. Medial Amygdalar Tau Is Associated With Mood Symptoms in Preclinical Alzheimer’s Disease. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2024, 9: 1301-1311. PMID: 39059466, PMCID: PMC11625605, DOI: 10.1016/j.bpsc.2024.07.012.
- Powers A, Angelos P, Bond A, Farina E, Fredericks C, Gandhi J, Greenwald M, Hernandez-Busot G, Hosein G, Kelley M, Mourgues C, Palmer W, Rodriguez-Sanchez J, Seabury R, Toribio S, Vin R, Weleff J, Woods S, Benrimoh D. A computational account of the development and evolution of psychotic symptoms. Biological Psychiatry 2024, 97: 117-127. PMID: 38699166, PMCID: PMC11065053, DOI: 10.1016/j.biopsych.2024.08.026.
- Oland L, Trainer A, Ficek-Tani B, Li J, Tun S, Ju S, Lacadie C, Constable T, Martin N, Fredericks C. Preliminary Characterization of Language Network Connectivity in a Logopenic Alzheimer’s Population Using Task-based fMRI (S1.006). Neurology 2024, 102 DOI: 10.1212/wnl.0000000000204401.
- Heller S, See C, Singh I, Fredericks C. Cognitive impairment in pulmonary arterial hypertension. Annals Of Clinical And Translational Neurology 2023, 10: 1899-1903. PMID: 37550957, PMCID: PMC10578884, DOI: 10.1002/acn3.51867.
- Ju S, Horien C, Shen X, Abuwarda H, Trainer A, Constable R, Fredericks C. Connectome-based predictive modeling shows sex differences in brain-based predictors of memory performance. Frontiers In Dementia 2023, 2: 1126016. PMID: 39082002, PMCID: PMC11285565, DOI: 10.3389/frdem.2023.1126016.
- Ficek-Tani B, Horien C, Ju S, Xu W, Li N, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in default mode network connectivity in healthy aging adults. Cerebral Cortex 2022, 33: 6139-6151. PMID: 36563018, PMCID: PMC10183749, DOI: 10.1093/cercor/bhac491.
- Ju S, Horien C, Constable T, Fredericks C. Robust prediction of memory and neuroticism in men and women using connectome‐based predictive modeling. Alzheimer's & Dementia 2022, 18 DOI: 10.1002/alz.063015.
- Tun S, Ficek‐Tani B, Frolov A, Sharp E, Fredericks C. A Professional Musician with Sight‐Reading Difficulties: A Case Study. Alzheimer's & Dementia 2022, 18 DOI: 10.1002/alz.059696.
- Wilson E, Young C, Ramos Benitez J, Swarovski M, Feinstein I, Vandijck M, Le Guen Y, Kasireddy N, Shahid M, Corso N, Wang Q, Kennedy G, Trelle A, Lind B, Channappa D, Belnap M, Ramirez V, Skylar-Scott I, Younes K, Yutsis M, Le Bastard N, Quinn J, van Dyck C, Nairn A, Fredericks C, Tian L, Kerchner G, Montine T, Sha S, Davidzon G, Henderson V, Longo F, Greicius M, Wagner A, Wyss-Coray T, Poston K, Mormino E, Andreasson K. Performance of a fully-automated Lumipulse plasma phospho-tau181 assay for Alzheimer’s disease. Alzheimer's Research & Therapy 2022, 14: 172. PMID: 36371232, PMCID: PMC9652927, DOI: 10.1186/s13195-022-01116-2.
- Lin C, Goddard E, Chan K, Ma Y, Di Q, Fredericks C, Chen K. Short-term exposure to PM2.5 and daily all-cause dementia and Alzheimer´s disease mortality in Connecticut: a time-stratified case-crossover study. ISEE Conference Abstracts 2022, 2022 DOI: 10.1289/isee.2022.p-0045.
- Napolioni V, Fredericks CA, Kim Y, Channappa D, Khan RR, Kim LH, Zafar F, Couthouis J, Davidzon GA, Mormino EC, Gitler AD, Montine TJ, Schüle B, Greicius MD. Phenotypic Heterogeneity among GBA p.R202X Carriers in Lewy Body Spectrum Disorders. Biomedicines 2022, 10: 160. PMID: 35052839, PMCID: PMC8774039, DOI: 10.3390/biomedicines10010160.
- Ficek B, Horien C, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in connectivity in the default mode network in healthy aging adults. Alzheimer's & Dementia 2021, 17 DOI: 10.1002/alz.056050.
- Fredericks C. Methylphenidate for Apathy in Alzheimer Disease—Why Should We Care? JAMA Neurology 2021, 78: 1311-1313. PMID: 34570178, DOI: 10.1001/jamaneurol.2021.2942.
- Trelle AN, Carr VA, Wilson EN, Swarovski MS, Hunt MP, Toueg TN, Tran TT, Channappa D, Corso NK, Thieu MK, Jayakumar M, Nadiadwala A, Guo W, Tanner NJ, Bernstein JD, Litovsky CP, Guerin SA, Khazenzon AM, Harrison MB, Rutt BK, Deutsch GK, Chin FT, Davidzon GA, Hall JN, Sha SJ, Fredericks CA, Andreasson KI, Kerchner GA, Wagner AD, Mormino EC. Association of CSF Biomarkers With Hippocampal-Dependent Memory in Preclinical Alzheimer Disease. Neurology 2021, 96: e1470-e1481. PMID: 33408146, PMCID: PMC8055319, DOI: 10.1212/wnl.0000000000011477.
- Mormino EC, Toueg TN, Azevedo C, Castillo JB, Guo W, Nadiadwala A, Corso NK, Hall JN, Fan A, Trelle AN, Harrison MB, Hunt MP, Sha SJ, Deutsch G, James M, Fredericks CA, Koran ME, Zeineh M, Poston K, Greicius MD, Khalighi M, Davidzon GA, Shen B, Zaharchuk G, Wagner AD, Chin FT. Tau PET imaging with 18F-PI-2620 in aging and neurodegenerative diseases. European Journal Of Nuclear Medicine And Molecular Imaging 2020, 48: 2233-2244. PMID: 32572562, PMCID: PMC7755737, DOI: 10.1007/s00259-020-04923-7.
- Trelle AN, Carr VA, Guerin SA, Thieu MK, Jayakumar M, Guo W, Nadiadwala A, Corso NK, Hunt MP, Litovsky CP, Tanner NJ, Deutsch GK, Bernstein JD, Harrison MB, Khazenzon AM, Jiang J, Sha SJ, Fredericks CA, Rutt BK, Mormino EC, Kerchner GA, Wagner AD. Hippocampal and cortical mechanisms at retrieval explain variability in episodic remembering in older adults. ELife 2020, 9: e55335. PMID: 32469308, PMCID: PMC7259949, DOI: 10.7554/elife.55335.
- Koran M, Davidzon G, Azevedo C, Toueg T, Nadiadwala A, Castillo J, Hall J, Sha S, Fredericks C, Greicius M, Wagner A, Zaharchuk G, Chin F, Mormino E. P4‐576: CONCORDANCE BETWEEN 18F‐PI‐2620 TAU PET/MRI IMAGING AND CLINICAL OUTCOMES IN ALZHEIMER DISEASE AND OTHER TAUOPATHIES. Alzheimer's & Dementia 2019, 15: p1541-p1541. DOI: 10.1016/j.jalz.2019.08.124.
- Pressman PS, Gola K, Shdo SM, Miller BL, Fredericks C, Mielke C, Pelak V, Rankin KP. Relative preservation of facial expression recognition in posterior cortical atrophy. Neurology 2019, 92: e1064-e1071. PMID: 30760634, PMCID: PMC6442010, DOI: 10.1212/wnl.0000000000007075.
- Fredericks CA, Brown JA, Deng J, Kramer A, Ossenkoppele R, Rankin K, Kramer JH, Miller BL, Rabinovici GD, Seeley WW. Intrinsic connectivity networks in posterior cortical atrophy: A role for the pulvinar? NeuroImage Clinical 2018, 21: 101628. PMID: 30528957, PMCID: PMC6411779, DOI: 10.1016/j.nicl.2018.101628.
- Mormino E, Nadiadwala A, Azevedo C, Guo W, Castillo J, Hall J, Trelle A, Sha S, Jayakumar M, Tanner N, Harrison M, Deutsch G, Fredericks C, Greicius M, Srinivas S, James M, Zaharchuk G, Wagner A, Chin F. P4‐315: TAU PET IMAGING WITH 18F‐PI2620 IN AGING AND ALZHEIMER'S DISEASE. Alzheimer's & Dementia 2018, 14: p1577-p1578. DOI: 10.1016/j.jalz.2018.07.138.
- Trelle A, Bernstein J, Carr V, Deutsch G, Fredericks C, Guerin S, Guo W, Harrison M, Jayakumar M, Jiang J, Kerchner G, Khazhenzon A, Litovsky C, Mormino B, Nadiadwala A, Sha S, Tanner N, Thieu M, Wagner A. P4‐322: THE CONTRIBUTION OF EARLY ALZHEIMER'S DISEASE MARKERS TO INDIVIDUAL DIFFERENCES IN EPISODIC MEMORY IN COGNITIVELY NORMAL OLDER ADULTS. Alzheimer's & Dementia 2018, 14: p1585-p1585. DOI: 10.1016/j.jalz.2018.07.145.
- Fredericks CA, Sturm VE, Brown JA, Hua AY, Bilgel M, Wong DF, Resnick SM, Seeley WW. Early affective changes and increased connectivity in preclinical Alzheimer's disease. Alzheimer's & Dementia Diagnosis Assessment & Disease Monitoring 2018, 10: 471-479. PMID: 30302368, PMCID: PMC6174255, DOI: 10.1016/j.dadm.2018.06.002.
- Fredericks C, Brown J, Deng J, Ossenkoppele R, Rankin K, Kramer J, Miller B, Rabinovici G, Seeley W. [IC‐P‐031]: INTRINSIC CONNECTIVITY NETWORKS IN POSTERIOR CORTICAL ATROPHY: A ROLE FOR THE PULVINAR? Alzheimer's & Dementia 2017, 13: p28-p29. DOI: 10.1016/j.jalz.2017.06.2303.
- Fredericks C, Brown J, Deng J, Ossenkoppele R, Rankin K, Kramer J, Miller B, Rabinovici G, Seeley W. [P2–388]: INTRINSIC CONNECTIVITY NETWORKS IN POSTERIOR CORTICAL ATROPHY: A ROLE FOR THE PULVINAR? Alzheimer's & Dementia 2017, 13: p778-p778. DOI: 10.1016/j.jalz.2017.06.1043.
- Fredericks CA, Koestler M, Seeley W, Miller B, Boxer A, Grinberg LT. Primary chronic traumatic encephalopathy in an older patient with late-onset AD phenotype. Neurology Clinical Practice 2015, 5: 475-479. PMID: 26716062, PMCID: PMC4684670, DOI: 10.1212/cpj.0000000000000161.
- Burish MJ, Fredericks CA, Engstrom JW, Tateo VL, Josephson SA. Predicting success: What medical student measures predict resident performance in neurology? Clinical Neurology And Neurosurgery 2015, 135: 69-72. PMID: 26038279, DOI: 10.1016/j.clineuro.2015.05.007.
- Fredericks C, Sturm V, Hua A, Bilgel M, Wong D, Resnick S, Seeley W. Neuroticism Increases with Age in Cognitively Normal Older Adults who are PiB-Positive (P5.025). Neurology 2015, 84 DOI: 10.1212/wnl.84.14_supplement.p5.025.
- Fredericks C, Sturm V, Hua A, Bilgel M, Wong D, Resnick S, Seeley W. Neuroticism Increases with Age in Cognitively Normal Older Adults who are PiB-Positive (I9-5C). Neurology 2015, 84 DOI: 10.1212/wnl.84.14_supplement.i9-5c.
- Fredericks C, Kvam K, Bear J, Crabtree G, Josephson. A case of progressive multifocal leukoencephalopathy in a lupus patient treated with belimumab. Lupus 2014, 23: 711-713. PMID: 24531080, DOI: 10.1177/0961203314524292.
- Blond BN, Fredericks CA, Blumberg HP. Functional neuroanatomy of bipolar disorder: structure, function, and connectivity in an amygdala–anterior paralimbic neural system. Bipolar Disorders 2012, 14: 340-355. PMID: 22631619, PMCID: PMC3880745, DOI: 10.1111/j.1399-5618.2012.01015.x.
- Fredericks CA, Drabant EM, Edge MD, Tillie JM, Hallmayer J, Ramel W, Kuo JR, Mackey S, Gross JJ, Dhabhar FS. Healthy young women with serotonin transporter SS polymorphism show a pro-inflammatory bias under resting and stress conditions. Brain Behavior And Immunity 2009, 24: 350-357. PMID: 19883751, PMCID: PMC2826575, DOI: 10.1016/j.bbi.2009.10.014.
- Chepenik LG, Fredericks C, Papademetris X, Spencer L, Lacadie C, Wang F, Pittman B, Duncan JS, Staib LH, Duman RS, Gelernter J, Blumberg HP. Effects of the Brain-Derived Neurotrophic Growth Factor Val66Met Variation on Hippocampus Morphology in Bipolar Disorder. Neuropsychopharmacology 2008, 34: 944-951. PMID: 18704093, PMCID: PMC2837582, DOI: 10.1038/npp.2008.107.
- Fredericks C, Kalmar J, Blumberg H. The role of the ventral prefrontal cortex in mood disorders. 2006, 545-578. DOI: 10.1093/acprof:oso/9780198565741.003.0021.
- Blumberg HP, Fredericks C, Wang F, Kalmar JH, Spencer L, Papademetris X, Pittman B, Martin A, Peterson BS, Fulbright RK, Krystal JH. Preliminary evidence for persistent abnormalities in amygdala volumes in adolescents and young adults with bipolar disorder. Bipolar Disorders 2005, 7: 570-576. PMID: 16403182, PMCID: PMC2291299, DOI: 10.1111/j.1399-5618.2005.00264.x.
- Blumberg HP, Leung HC, Skudlarski P, Lacadie CM, Fredericks CA, Harris BC, Charney DS, Gore JC, Krystal JH, Peterson BS. A Functional Magnetic Resonance Imaging Study of Bipolar Disorder: State- and Trait-Related Dysfunction in Ventral Prefrontal Cortices. JAMA Psychiatry 2003, 60: 601-609. PMID: 12796223, DOI: 10.1001/archpsyc.60.6.601.
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