Faculty profile

Andrew Nicholson

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Assistant Professor (Part-Time)Psychiatry & Behavioural NeurosciencesMcMaster University

Andrew Nicholson

Assistant Professor (Part-Time)

Psychiatry & Behavioural Neurosciences

Faculty of Health Sciences

McMaster University

Hamilton, Ontario, Canada

In this role since 2022

Email ORCID

Supervision signals

Adjunct, part-time and visiting faculty usually co-supervise alongside a core faculty member.
Teaches 1 graduate course, most recently in 2021.
52 publications in the last five years, latest in 2026.
Senior (last) author on 8 recent papers, a sign of leading a research group.
Principal investigator on 1 CIHR grant, most recently in 2022.

These signals come from public records. Ask the professor or the graduate program whether they are taking new students.

Academic metrics

Publications

2,854

Citations

h-index

Collaborators

Grants

Publications by year

Counts cover the works listed on the university profile; citation counts come from Dimensions.

Other appointments

Centre for Clinical Neurosciences (CCN)

Academic profiles

University Profile Search on Google Scholar iDORCID OpenAlex

Social profiles

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Contact

nichoa25@mcmaster.ca

Research

Research areas, by share of publications

Posttraumatic Stress Disorder ResearchPsychology
Functional Brain Connectivity StudiesNeuroscience
Psychosomatic Disorders and Their TreatmentsMedicine
Mental Health Research TopicsPsychology

Research areas are derived from OpenAlex topics of their publications.

88 publications.

Toward a definition of treatment-resistant posttraumatic stress disorder: A systematic review

Al-Shamali HF, Meshkat S, Janssen-Aguilar R, Uthayakumar H, Burback L, Winkler O, Zhang Y, Greenshaw A, Enns MW, Nicholson AA

Journal of Military, Veteran and Family Health20263 citationsSenior author

DOI: 10.3138/jmvfh-2025-0015

Bridging the self to the world: resting-state functional connectivity of the temporoparietal junction in post-traumatic stress disorder and its dissociative subtype

Narikuzhy S, Harricharan S, Rabellino D, Densmore M, Théberge J, Lieberman J, McKinnon MC, Nicholson AA, Lanius RA

NeuroImage: Clinical20262 citations

DOI: 10.1016/j.nicl.2025.103920

Putting the Amygdala and Hippocampus in PTSD to Rest

Frewen P, Nicholson A

American Journal of Psychiatry20262 citationsSenior author

DOI: 10.1176/appi.ajp.20260188

Investigating the Neurobiology of Minority Stress-related Moral Injury with fMRI

Nicholson A, Lynn E, Villeneuve AH, Klimkowski V, Siegel M, Horning J, Hatchard T, Narikuzhy S, Pichtikova M, Lanius R

20261 citationsFirst author

DOI: 10.31234/osf.io/cw8b6_v2

Gray matter volume correlates of resilience: a coordinate-based meta-analysis

Hosseini-Kamkar N, Kamkar N, Kalahasthi R, Ghorayeb J, Razaan A, Nair A, Nicholson AA, Maswood M

Frontiers in Psychology20261 citations

DOI: 10.3389/fpsyg.2026.1691912

A Mixed-Methods Study Exploring the Impact of Minority Stress on Trauma and Dissociation Symptoms Among Sexual and Gender Minorities: Preliminary Evidence for an Adapted Four-Dimensional Model of the Traumatized Self

Pichtikova M, Narikuzhy S, Villeneuve AH, Mirabelli J, Wolf J, Frewen P, Lanius R, Hatchard T, Schielke H, Levitt E

20261 citations

DOI: 10.31234/osf.io/gxur7_v2

EEG-AI: An agentic system for AI-assisted semi-automated EEG preprocessing and artifact removal

Abdou A, Ivanov M, Shaya S, Rueda A, Nezhad FG, Demchenko I, Kamaleddin MA, Frewen PA, Dunkley BT, Brady B

Journal of Neuroscience Methods20261 citations

DOI: 10.1016/j.jneumeth.2026.110759

Augmenting evidence-based PTSD psychotherapy with neuroscientifically informed interventions: A mind-body-brain approach

Jetly R, Frewen P, Lieberman JM, Kearney B, Al-Shamali HF, Bhat V, Lanius R, Nicholson AA

Journal of Military, Veteran and Family Health20261 citationsSenior author

DOI: 10.3138/jmvfh-2025-0024

Reimagining MAiD for psychiatric illness: Ethical dilemmas among Veterans, clinical realities, and the road ahead

Dupuis G, Jetly R, Bélanger SAH, Sareen J, Nicholson AA

Journal of Military, Veteran and Family Health2026Senior author

DOI: 10.3138/jmvfh-2025-0034

Violence on the self: Exploring the intersection of trauma and identity among sexual and gender minorities from a neurobiological and developmental perspective to advance our understanding of PTSD, moral injury, and dissociation symptoms

Nicholson AA, Siegel M, Villeneuve AH, Lucherini Angeletti L, Fani N, Hatchard T, Northoff G, Lanius RA, Pichtikova M, Hosseini-Kamkar N

Neuroscience and Biobehavioral Reviews2026First author

DOI: 10.1016/j.neubiorev.2026.106841

Courses taught

Independent Study in Neuroscience
NEUROSCI 722 · last taught 2021
Graduate

Researchers with similar interests

Margaret McKinnon

Psychiatry & Behavioural Neurosciences

Posttraumatic Stress Disorder Research, Functional Brain Connectivity Studies

Jenna Boyd

Psychiatry & Behavioural Neurosciences

Posttraumatic Stress Disorder Research, Psychosomatic Disorders and Their Treatments

Alexandra Heber

Psychiatry & Behavioural Neurosciences

Posttraumatic Stress Disorder Research

Jonathan Stanley Davine

Psychiatry & Behavioural Neurosciences

Posttraumatic Stress Disorder Research

Taylor Hatchard

Psychiatry & Behavioural Neurosciences

Posttraumatic Stress Disorder Research

Benicio Frey

Psychiatry & Behavioural Neurosciences

Functional Brain Connectivity Studies

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Subject: Prospective PhD student: Posttraumatic Stress Disorder Research Dear Professor Nicholson, 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 "Toward a definition of treatment-resistant posttraumatic stress disorder: A systematic review" (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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Andrew Nicholson

Research

Toward a definition of treatment-resistant posttraumatic stress disorder: A systematic review

Bridging the self to the world: resting-state functional connectivity of the temporoparietal junction in post-traumatic stress disorder and its dissociative subtype

Putting the Amygdala and Hippocampus in PTSD to Rest

Investigating the Neurobiology of Minority Stress-related Moral Injury with fMRI

Gray matter volume correlates of resilience: a coordinate-based meta-analysis

A Mixed-Methods Study Exploring the Impact of Minority Stress on Trauma and Dissociation Symptoms Among Sexual and Gender Minorities: Preliminary Evidence for an Adapted Four-Dimensional Model of the Traumatized Self

EEG-AI: An agentic system for AI-assisted semi-automated EEG preprocessing and artifact removal

Augmenting evidence-based PTSD psychotherapy with neuroscientifically informed interventions: A mind-body-brain approach

Reimagining MAiD for psychiatric illness: Ethical dilemmas among Veterans, clinical realities, and the road ahead

Violence on the self: Exploring the intersection of trauma and identity among sexual and gender minorities from a neurobiological and developmental perspective to advance our understanding of PTSD, moral injury, and dissociation symptoms

Courses taught