Peter Williamson, Western University

Research

Read how they describe their research on their Western University profile.

Diffusion Tensor Imaging Functional Mri Major Depressive Disorder Proton Magnetic Resonance Spectroscopy Schizophrenia Voxel-Based Morphometry

Latest papers

Early treatment response in first episode psychosis: a 7-T magnetic resonance spectroscopic study of glutathione and glutamate.
Molecular psychiatry · 2020
Alterations of Intrinsic Connectivity Networks in Antipsychotic-Naïve First-Episode Schizophrenia.
Schizophrenia bulletin · 2018
Cognitive performance is associated with gray matter decline in first-episode psychosis.
Psychiatry research. Neuroimaging · 2017 · senior author

All 13 publications

Latest funding

Differentiating Bipolar Disorder from Major Depressive Disorder in depressed, medication-free young adults using multivariate brain imaging and machine learning technologies
CIHR · 2016 · Co-investigator
$100,000
Myelin Mapping and Negative Symptoms of Schizophrenia
CIHR · 2016 · Co-investigator
$566,100
Candidate Neuronal Circuits in Schizophrenia
CIHR · 2012 · Nominated PI
$739,754

All 5 grants and awards

13 publications.

01

Early treatment response in first episode psychosis: a 7-T magnetic resonance spectroscopic study of glutathione and glutamate.

Dempster K, Jeon P, MacKinley M, Williamson P, Théberge J, Palaniyappan L

Molecular psychiatry2020

DOI: 10.1038/s41380-020-0704-x PMID: 32205866

02

Alterations of Intrinsic Connectivity Networks in Antipsychotic-Naïve First-Episode Schizophrenia.

Anhøj S, Ødegaard Nielsen M, Jensen MH, Ford K, Fagerlund B, Williamson P, Glenthøj B, Rostrup E

Schizophrenia bulletin2018

DOI: 10.1093/schbul/sbx171 PMID: 29373756

03

Cognitive performance is associated with gray matter decline in first-episode psychosis.

Dempster K, Norman R, Théberge J, Densmore M, Schaefer B, Williamson P

Psychiatry research. Neuroimaging2017Senior author

DOI: 10.1016/j.pscychresns.2017.04.007 PMID: 28458083

04

Glutamatergic metabolite correlations with neuropsychological tests in first episode schizophrenia.

Dempster K, Norman R, Théberge J, Densmore M, Schaefer B, Williamson P

Psychiatry research2015Senior author

DOI: 10.1016/j.pscychresns.2015.06.003 PMID: 26163385

05

Unique functional abnormalities in youth with combined marijuana use and depression: an FMRI study.

Ford KA, Wammes M, Neufeld RW, Mitchell D, Théberge J, Williamson P, Osuch EA

Frontiers in psychiatry2014

DOI: 10.3389/fpsyt.2014.00130 PMID: 25309462

06

Progressive membrane phospholipid changes in first episode schizophrenia with high field magnetic resonance spectroscopy.

Miller J, Drost DJ, Jensen E, Manchanda R, Northcott S, Neufeld RW, Menon R, Rajakumar N, Pavlosky W, Densmore M, Schaefer B, Williamson P

Psychiatry research2012Senior author

DOI: 10.1016/j.pscychresns.2011.06.017 PMID: 22284150

07

Longitudinal 4.0 Tesla (31)P magnetic resonance spectroscopy changes in the anterior cingulate and left thalamus in first episode schizophrenia.

Miller J, Williamson P, Jensen JE, Manchanda R, Menon R, Neufeld R, Rajakumar N, Pavlosky W, Densmore M, Schaefer B, Drost DJ

Psychiatry research2009

DOI: 10.1016/j.pscychresns.2008.10.001 PMID: 19520552

08

Resting state default‐mode network connectivity in early depression using a seed region‐of‐interest analysis: Decreased connectivity with caudate nucleus

Bluhm R, Williamson P, Lanius R, Théberge J, Densmore M, Bartha R, Neufeld R, Osuch E

Psychiatry and Clinical Neurosciences2009291 citations

DOI: 10.1111/j.1440-1819.2009.02030.x

09

Are anticorrelated networks in the brain relevant to schizophrenia?

Williamson P

Schizophrenia bulletin2007First author

DOI: 10.1093/schbul/sbm043 PMID: 17493957

10

Evidence for cortical dysfunction in autism: a proton magnetic resonance spectroscopic imaging study.

DeVito TJ, Drost DJ, Neufeld RW, Rajakumar N, Pavlosky W, Williamson P, Nicolson R

Biological psychiatry2007

DOI: 10.1016/j.biopsych.2006.07.022 PMID: 17276747

Differentiating Bipolar Disorder from Major Depressive Disorder in depressed, medication-free young adults using multivariate brain imaging and machine learning technologies

Co-investigatorCIHR2016Project Grant

Principal investigators: Osuch, Elizabeth A

Keywords: Bipolar Disorder; Early Identification; Major Depressive Disorder; Mood Disorders

$100,000

Myelin Mapping and Negative Symptoms of Schizophrenia

Co-investigatorCIHR2016Project Grant

Principal investigators: Palaniyappan, Lena K

Keywords: Anterior Cingulate Cortex; Connectivity; Magnetic Resonance Imaging; Negative Symptoms; Neuroimaging; Psychosis; Schizophrenia; Ultra-High Field Mri; White Matter

$566,100

Candidate Neuronal Circuits in Schizophrenia

Nominated PICIHR2012Operating Grant

Principal investigators: Williamson, Peter C

Keywords: Diffusion Tensor Imaging; Functional Mri; Major Depressive Disorder; Proton Magnetic Resonance Spectroscopy; Schizophrenia; Voxel-Based Morphometry

$739,754

Neural Correlates of Social and Nonsocial Emotion Processing In Women with Childhood Interpersonal Violence

Co-investigatorCIHR2008Operating Grant - Priority Announcement: Institute of Gender and Health

Principal investigators: Lanius, Ruth A

Keywords: Early Life Adversity

$100,000

Laboratory for functional magnetic resonance research (LFMRR)

Co-investigatorNSERC1999Major Facilities Access Grants

Principal investigators: Menon, Ravi

$69,000

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

Department of Psychiatry
Department of Medical Biophysics
Psychiatry & Behavioural Neurosciences
Clinical Neurological Sciences
Biochemistry
Other

Co-authors at Western University, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.

Ross Norman

Department of Psychiatry

2 shared papers, latest 2017

Ravi Menon

Department of Medical Biophysics

2 shared papers, latest 2012

Ruth Lanius

Psychiatry & Behavioural Neurosciences

2 shared papers, latest 2009

Ruth Lanius

Department of Psychiatry

1 shared papers, latest 2009

Lena Palaniyappan

Department of Psychiatry

1 shared papers, latest 2020

Elizabeth Osuch

Department of Psychiatry

1 shared papers, latest 2009

Derek Mitchell

Clinical Neurological Sciences

1 shared papers, latest 2014

Sandra Northcott

Department of Psychiatry

1 shared papers, latest 2012

Robert Bartha

Biochemistry

1 shared papers, latest 2009

Write to this professor

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Applying for

Paper to mention

Subject: Prospective PhD student: Diffusion Tensor Imaging Dear Professor Williamson, 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 "Early treatment response in first episode psychosis: a 7-T magnetic resonance spectroscopic study of glutathione and glutamate." (2020), 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]

Peter Williamson

Research

Latest papers

Latest funding

Early treatment response in first episode psychosis: a 7-T magnetic resonance spectroscopic study of glutathione and glutamate.

Alterations of Intrinsic Connectivity Networks in Antipsychotic-Na&#xef;ve First-Episode Schizophrenia.

Cognitive performance is associated with gray matter decline in first-episode psychosis.

Glutamatergic metabolite correlations with neuropsychological tests in first episode schizophrenia.

Unique functional abnormalities in youth with combined marijuana use and depression: an FMRI study.

Progressive membrane phospholipid changes in first episode schizophrenia with high field magnetic resonance spectroscopy.

Longitudinal 4.0 Tesla (31)P magnetic resonance spectroscopy changes in the anterior cingulate and left thalamus in first episode schizophrenia.

Resting state default‐mode network connectivity in early depression using a seed region‐of‐interest analysis: Decreased connectivity with caudate nucleus

Are anticorrelated networks in the brain relevant to schizophrenia?

Evidence for cortical dysfunction in autism: a proton magnetic resonance spectroscopic imaging study.

Differentiating Bipolar Disorder from Major Depressive Disorder in depressed, medication-free young adults using multivariate brain imaging and machine learning technologies

Myelin Mapping and Negative Symptoms of Schizophrenia

Candidate Neuronal Circuits in Schizophrenia

Neural Correlates of Social and Nonsocial Emotion Processing In Women with Childhood Interpersonal Violence

Laboratory for functional magnetic resonance research (LFMRR)

Frequent collaborators

Ross Norman

Ravi Menon

Ruth Lanius

Ruth Lanius

Lena Palaniyappan

Elizabeth Osuch

Kara Dempster

Derek Mitchell

Sandra Northcott

Robert Bartha

Alterations of Intrinsic Connectivity Networks in Antipsychotic-Naïve First-Episode Schizophrenia.