- American Psychiatric Association (2000)
- American College of Neuropsychopharmacology (2016)
- Society of Biological Psychiatry (2014)
- International College of Geriatric Neuropsychopharmacology (2007)
- Schizophrenia International Research Society (2007)
- American Association for Geriatric Psychiatry (2006)
Tarek K. Rajji, M.D.
- Stanton Sharp Distinguished Chair in Psychiatry
- Psychiatry
Biography
Tarek K. Rajji, M.D., undertook undergraduate studies and obtained his medical degree at the American University of Beirut. He then completed a residency in general psychiatry at UT Southwestern Medical Center and continued his training as a fellow in psychiatric research and neuroscience sponsored by the VA North Texas Health Care System and UT Southwestern. He pursued further training in geriatric psychiatry with a clinical fellowship at the University of Pittsburgh and a research fellowship at the University of Toronto. He is board certified in both general and geriatric psychiatry by the American Board of Psychiatry and Neurology.
Dr. Rajji's research has focused on neuroplasticity and cognition in older patients with mental illness and neurocognitive diseases. To improve cognition in older adults with dementia or at risk for dementia, he combines brain stimulation, including transcranial magnetic and electrical stimulation, with cognitive, functional, and pharmacological modalities. He also studies standardization of care for patients with dementia. He has led multiple clinical trials with older patients with depression, neurocognitive disorders, and schizophrenia funded by federal agencies such as Brain Canada, Canadian Institutes of Health Research, and the U.S. National Institute of Mental Health.
Prior to joining UTSW, Dr. Rajji was Professor of Psychiatry, Director of the Geriatric Psychiatry Division, and Executive Director of the Toronto Dementia Research Alliance at the University of Toronto. He also served as Chair of the Medical Advisory Committee for the Centre for Addiction and Mental Health (CAMH). Affiliated with the University of Toronto, CAMH is Canada’s largest mental health teaching hospital and one of the world’s leading research centers in the field.
Professional Associations & Affiliations
Books & Publications
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Books
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Responding to Older Adults with Mental Health and Addiction Problems: A Guide for Supervisors, Clinical and Support Staff
Bertram J, Rajji TK, White-Campbell M (2021), Toronto, CAMH
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Responding to Older Adults with Mental Health and Addiction Problems: A Guide for Supervisors, Clinical and Support Staff
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Publications
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Reduced circulating progenitor cells in older adults with major depression: Evidence of accelerated biological aging.
Vieira EL, El-Ahmad P, Nikolova Y, Rajji T, Diniz BS, Brain, behavior, & immunity - health 2026 May 53 101211 -
Understanding the Older Brain in Depression.
Rajji TK, Biological psychiatry. Cognitive neuroscience and neuroimaging 2026 Feb 11 2 137-138 -
Neuromodulation and cognition in late-life depression.
Mirjalili M, Blumberger DM, Brunoni AR, Mulsant BH, Rajji TK, Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2026 Jan -
Executive Function Among Older Adults With Bipolar Disorder: A GAGE-BD Analysis.
Klaus F, Appiah E, Barbosa IG, Chen P, Gildengers A, Nunes PV, Briggs F, Fiorelli N, Sutherland AN, Emanuel JE, Lavin P, Mulsant BH, Orhan M, Patrick R, Rajji TK, Schouws S, Rej S, Dols A, Sajatovic M, Eyler LT, The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry 2025 Dec -
Multiscale dispersion entropy of resting-state EEG in older adults with Alzheimer's disease, mild cognitive impairment, and remitted major depressive disorder.
Azami H, McAndrews MP, Rostaghi M, Zomorrodi R, Brooks H, Blumberger DM, Fischer CE, Flint A, Herrmann N, Kumar S, Gallagher D, Mah L, Mulsant BH, Pollock BG, Rajji TK, Journal of Alzheimer's disease : JAD 2025 Dec 13872877251410962 -
The effects of naturalistic cannabis use on cognition and subjective experience in older adults with normal cognitive function.
Di Ciano P, Le Foll B, Zhao S, Byrne P, Elzohairy Y, Brubacher JR, McGrath M, Brands B, Chen S, Wang W, Kaduri P, Wickens CM, Rajji TK, Journal of psychopharmacology (Oxford, England) 2025 Nov 2698811251370975 -
The effects of rTMS on self-reported quality of life in younger and older adults with major depressive disorder.
Göke K, Downar J, Vila-Rodriguez F, Daskalakis ZJ, Rajji TK, Mulsant BH, Blumberger DM, Psychological medicine 2025 Oct 55 e303 -
Integrated knowledge translation (iKT) in preclinical research: A scoping review protocol.
Black G, Besa R, Blumberger D, Brooks H, Collingridge G, Georgiou J, Lambe EK, Ma C, Mdawar B, Rajji TK, Sockalingam S, Sullivan C, Vaz Q, Yao Z, Agic B, PloS one 2025 20 11 e0337202 -
Slowing Cognitive Decline in Major Depressive Disorder and Mild Cognitive Impairment: A Randomized Clinical Trial.
Rajji TK, Bowie CR, Herrmann N, Pollock BG, Lanctôt KL, Kumar S, Flint AJ, Mah L, Fischer CE, Butters MA, Bikson M, Kennedy JL, Blumberger DM, Daskalakis ZJ, Gallagher D, Rapoport MJ, Verhoeff NPLGP, Golas AC, Graff-Guerrero A, Vieira E, Voineskos AN, Brooks H, Melichercik A, Thorpe KE, Mulsant BH, JAMA psychiatry 2024 Oct -
Extent of Dorsolateral Prefrontal Cortex Plasticity and Its Association With Working Memory in Patients With Alzheimer Disease.
Kumar S, Zomorrodi R, Ghazala Z, Goodman MS, Blumberger DM, Cheam A, Fischer C, Daskalakis ZJ, Mulsant BH, Pollock BG, Rajji TK, JAMA psychiatry 2017 Dec 74 12 1266-1274 -
Ordering Information in Working Memory and Modulation of Gamma by Theta Oscillations in Humans.
Rajji TK, Zomorrodi R, Barr MS, Blumberger DM, Mulsant BH, Daskalakis ZJ, Cerebral cortex (New York, N.Y. : 1991) 2017 Feb 27 2 1482-1490 -
Evaluation of Antipsychotic Dose Reduction in Late-Life Schizophrenia: A Prospective Dopamine D2/3 Receptor Occupancy Study.
Graff-Guerrero A, Rajji TK, Mulsant BH, Nakajima S, Caravaggio F, Suzuki T, Uchida H, Gerretsen P, Mar W, Pollock BG, Mamo DC, JAMA psychiatry 2015 Sep 72 9 927-34 -
Prediction of working memory performance in schizophrenia by plasma ratio of clozapine to N-desmethylclozapine.
Rajji TK, Mulsant BH, Davies S, Kalache SM, Tsoutsoulas C, Pollock BG, Remington G, The American journal of psychiatry 2015 Jun 172 6 579-85 -
The impact of aging, cognition, and symptoms on functional competence in individuals with schizophrenia across the lifespan.
Kalache SM, Mulsant BH, Davies SJ, Liu AY, Voineskos AN, Butters MA, Miranda D, Menon M, Kern RS, Rajji TK, Schizophrenia bulletin 2015 Mar 41 2 374-81
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Reduced circulating progenitor cells in older adults with major depression: Evidence of accelerated biological aging.