Faculty profile

Andre C. Tonon

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Assistant ProfessorPsychiatry & Behavioural NeurosciencesMcMaster University

Research

Andre Comiran Tonon, MD, PhD (he, they) is a psychiatrist and researcher in the Department of Psychiatry & Behavioural Neurosciences at McMaster University. Using wearable devices and digital tools that track sleep and daily activity patterns, he studies how disruptions in biological rhythms shape the course of mood disorders, and whether those rhythms can help predict who responds to treatment and who doesn't. People living with depression, bipolar disorder, and those whose mental health intersects with gender identity and hormonal biology are at the centre of this work. Trained in psychiatry and chronobiology, Andre brings together clinical care and population-level research across rest-activity rhythms, sleep, light exposure, women's mental health, sexual and gender minority health. Outside the lab, he is a trained classical ballet dancer, an avid knitter and sewist, and someone who takes his complex strategy board games very seriously. Important to prospective students: I will NOT interview/accept students who send me AI-generated wordy e-mails introducing themselves.

Research areas, by share of publications

Research areas are derived from OpenAlex topics of their publications.

52 publications.

01

One-Year Actigraphy Study of Sleep and Rest-Activity Rhythms as Markers of Relapse in Depression

Tonon AC, Nexha A, Cunningham JEA, d’Eon J, Chakrabarty T, Farzan F, Foster JA, Harkness KL, Hassel S, Ho K

JAMA psychiatry202613 citationsFirst author
02

The science of child and adolescent mental health in Brazil: a nationwide systematic review and compendium of evidence-based resources

Marchionatti LE, Campello AC, Veronesi JA, Ziebold C, Tonon AC, Casella CB, Schafer JL, Madyun AN, Caye A, Kieling C

BMJ Global Health20261 citations
03

Neuroimaging insights on sleep disturbances and risk for major depressive disorder in youth: A systematic review

Gauthier N, Butt LI, Kennedy SH, Bhat V, Tonon AC, Dunlop K

Comprehensive Psychiatry2026
04

Confounding and Circularity in Actigraphy Prediction-Reply.

Tonon AC, Frey BN

JAMA psychiatry2026First author
05

Light Exposure Profiles and Depressive Symptoms in a Nationally Representative Sample: Sleep Regularity as a Mediating Pathway

Frey B, Tonon AC, Quadri F, Nexha A, Bonatto F, Constantino DB, Hidalgo MP, Nunes A, Pilz LK, Radosavljevic J

2026
06

Redefining sleep disturbances in bipolar disorder beyond broad constructs

Tonon AC, Frey BN

Sleep Medicine Reviews20253 citationsFirst author
07

Objective Assessment of Early Psychomotor Changes During Antidepressant Treatment

Tonon A, Burhan A, Blier P, Farzan F, Foster J, Frey B, Hussein I, Kloiber S, Lam R, Milev R

Biological Psychiatry2025First author
08

Clinical Correlates of Cardiovascular Disease Comorbidity in a Transdiagnostic Sample of Mood Disorder Patients From the ENABLE Study

Gomes FA, Tonon A, Blier P, Farzan F, Husain I, Soares C, Lam R, Milev R, Mueller D, Parikh S

Bipolar Disorders2025
09

Disrupted Daily Activity Rhythms Are Associated With Poorer Cognition and Quality of Life in Mood Disorders: A Report From the Enable Master Clinical Trial Platform

Frey BN, Tonon A, Blier P, Farza F, Foster J, Husain I, Kloiber S, Lam R, Milev R, Mueller D

Bipolar Disorders2025
10

Self-reported and actimetry-based cluster analysis of mood rhythmicity profiles in adolescents with and at risk for Major Depressive Disorder

Amando G, Xavier NB, Borges RB, da Mota MSS, Pereira R, Manfro PH, Rohrsetzer F, Piccin J, Souza L, Nexha A

Chronobiology International2025
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Applying for
Subject: Prospective PhD student: Sleep and related disorders Dear Professor Tonon, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "One-Year Actigraphy Study of Sleep and Rest-Activity Rhythms as Markers of Relapse in Depression" (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]
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