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Peter Williamson

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Peter C Williamson; John M Allman
A framework for interpreting functional networks in schizophrenia.
Peter C Williamson
A theoretical framework for the neurobiology of chronic traumatization.
Naoko Aoyama; Jean Théberge; Dick J Drost; Rahul Manchanda; Sandra Northcott; Richard W J Neufeld; Ravi S Menon; Nagalingam Rajakumar; William F Pavlosky; Maria Densmore; Betsy Schaefer; Peter C Williamson
Grey matter and social functioning correlates of glutamatergic metabolite loss in schizophrenia.

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All Publications

2012: Peter C Williamson; John M Allman
A framework for interpreting functional networks in schizophrenia.
Frontiers in human neuroscience 2012;6():184.
2011: Peter C Williamson
A theoretical framework for the neurobiology of chronic traumatization.
Acta psychiatrica Scandinavica 2011;124(5):329-30.
2011: Naoko Aoyama; Jean Théberge; Dick J Drost; Rahul Manchanda; Sandra Northcott; Richard W J Neufeld; Ravi S Menon; Nagalingam Rajakumar; William F Pavlosky; Maria Densmore; Betsy Schaefer; Peter C Williamson
Grey matter and social functioning correlates of glutamatergic metabolite loss in schizophrenia.
The British journal of psychiatry : the journal of mental science 2011;198(6):448-56.
2010: Ruth A Lanius; Robyn L Bluhm; N J Coupland; K M Hegadoren; B Rowe; Jean Théberge; R W J Neufeld; Peter C Williamson; M Brimson
Default mode network connectivity as a predictor of post-traumatic stress disorder symptom severity in acutely traumatized subjects.
Acta psychiatrica Scandinavica 2010;121(1):33-40.
2009: Caroline C Brun; Rob Nicolson; Natasha Leporé; Yi-Yu Chou; Christine N Vidal; Timothy J DeVito; Dick J Drost; Peter C Williamson; Nagalingam Rajakumar; Arthur W Toga; Paul M Thompson
Mapping brain abnormalities in boys with autism.
Human brain mapping 2009;30(12):3887-900.
2009: Elizabeth A Osuch; Robyn L Bluhm; Peter C Williamson; Jean Théberge; Maria Densmore; Richard W J Neufeld
Brain activation to favorite music in healthy controls and depressed patients.
Neuroreport 2009;20(13):1204-8.
2008: Christine N Vidal; Rob Nicolson; Jean-Yves Boire; Vincent Barra; Timothy J DeVito; Kiralee M Hayashi; Jennifer A Geaga; Dick J Drost; Peter C Williamson; Nagalingam Rajakumar; Arthur W Toga; Paul M Thompson
Three-dimensional mapping of the lateral ventricles in autism.
Psychiatry research 2008;163(2):106-15.
2007: Jean Théberge; Kate E Williamson; Naoko Aoyama; Dick J Drost; Rahul Manchanda; Ashok K Malla; Sandra Northcott; Ravi S Menon; Richard W J Neufeld; Nagalingam Rajakumar; William Pavlosky; Maria Densmore; Betsy Schaefer; Peter C Williamson
Longitudinal grey-matter and glutamatergic losses in first-episode schizophrenia.
The British journal of psychiatry : the journal of mental science 2007;191():325-34.
2006: Rob Nicolson; Timothy J DeVito; Christine N Vidal; Yihong Sui; Kiralee M Hayashi; Dick J Drost; Peter C Williamson; Nagalingam Rajakumar; Arthur W Toga; Paul M Thompson
Detection and mapping of hippocampal abnormalities in autism.
Psychiatry research 2006;148(1):11-21.
2006: Christine N Vidal; Rob Nicolson; Timothy J DeVito; Kiralee M Hayashi; Jennifer A Geaga; Dick J Drost; Peter C Williamson; Nagalingam Rajakumar; Yihong Sui; Rebecca A Dutton; Arthur W Toga; Paul M Thompson
Mapping corpus callosum deficits in autism: an index of aberrant cortical connectivity.
Biological psychiatry 2006;60(3):218-25.
2006: J Eric Jensen; Jodi Miller; Peter C Williamson; Richard W J Neufeld; Ravi S Menon; Ashok K Malla; Rahul Manchanda; Betsy Schaefer; Maria Densmore; Dick J Drost
Grey and white matter differences in brain energy metabolism in first episode schizophrenia: 31P-MRS chemical shift imaging at 4 Tesla.
Psychiatry research 2006;146(2):127-35.
2006: Janet Hendry; Timothy J DeVito; Neil Gelman; Maria Densmore; Nagalingam Rajakumar; William Pavlosky; Peter C Williamson; Paul M Thompson; Dick J Drost; Rob Nicolson
White matter abnormalities in autism detected through transverse relaxation time imaging.
NeuroImage 2006;29(4):1049-57.
2005: Timothy J DeVito; Dick J Drost; William Pavlosky; Richard W J Neufeld; Nagalingam Rajakumar; B Duncan McKinlay; Peter C Williamson; Rob Nicolson
Brain magnetic resonance spectroscopy in Tourette's disorder.
Journal of the American Academy of Child and Adolescent Psychiatry 2005;44(12):1301-8.
2005: Ruth A Lanius; Peter C Williamson; Robyn L Bluhm; Maria Densmore; Kristine Boksman; Richard W J Neufeld; Joseph S Gati; Ravi S Menon
Functional connectivity of dissociative responses in posttraumatic stress disorder: a functional magnetic resonance imaging investigation.
Biological psychiatry 2005;57(8):873-84.
2005: Jean Théberge; Ravi S Menon; Peter C Williamson; Dick J Drost
Implementation issues of multivoxel STEAM-localized 1H spectroscopy.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2005;53(3):713-8.
2004: Jean Théberge; Yousef Al-Semaan; J Eric Jensen; Peter C Williamson; Richard W J Neufeld; Ravi S Menon; Betsy Schaefer; Maria Densmore; Dick J Drost
Comparative study of proton and phosphorus magnetic resonance spectroscopy in schizophrenia at 4 Tesla.
Psychiatry research 2004;132(1):33-9.
2004: Jean Théberge; Yousef Al-Semaan; Dick J Drost; Ashok K Malla; Richard W J Neufeld; Robert Bartha; Rahul Manchanda; Ravi Menon; Maria Densmore; Betsy Schaefer; Peter C Williamson
Duration of untreated psychosis vs. N-acetylaspartate and choline in first episode schizophrenia: a 1H magnetic resonance spectroscopy study at 4.0 Tesla.
Psychiatry research 2004;131(2):107-14.
2004: J Eric Jensen; Jodi Miller; Peter C Williamson; Richard W J Neufeld; Ravi S Menon; Ashok K Malla; Rahul Manchanda; Betsy Schaefer; Maria Densmore; Dick J Drost
Focal changes in brain energy and phospholipid metabolism in first-episode schizophrenia: 31P-MRS chemical shift imaging study at 4 Tesla.
The British journal of psychiatry : the journal of mental science 2004;184():409-15.
2004: Ruth A Lanius; Peter C Williamson; Maria Densmore; Kristine Boksman; Richard W J Neufeld; Joseph S Gati; Ravi S Menon
The nature of traumatic memories: a 4-T FMRI functional connectivity analysis.
The American journal of psychiatry 2004;161(1):36-44.
2003: Jean Théberge; Yousef Al-Semaan; Peter C Williamson; Ravi S Menon; Richard W J Neufeld; Nagalingam Rajakumar; Betsy Schaefer; Maria Densmore; Dick J Drost
Glutamate and glutamine in the anterior cingulate and thalamus of medicated patients with chronic schizophrenia and healthy comparison subjects measured with 4.0-T proton MRS.
The American journal of psychiatry 2003;160(12):2231-3.
2003: Verinder Sharma; Ravi Menon; Thomas J Carr; Maria Densmore; Dwight Mazmanian; Peter C Williamson
An MRI study of subgenual prefrontal cortex in patients with familial and non-familial bipolar I disorder.
Journal of affective disorders 2003;77(2):167-71.
2003: Ruth A Lanius; Peter C Williamson; James Hopper; Maria Densmore; Kristine Boksman; Madhulika A Gupta; Richard W J Neufeld; Joseph S Gati; Ravi S Menon
Recall of emotional states in posttraumatic stress disorder: an fMRI investigation.
Biological psychiatry 2003;53(3):204-10.
2002: Jean Théberge; Robert Bartha; Dick J Drost; Ravi S Menon; Ashok K Malla; Jatinder Takhar; Richard W J Neufeld; John Rogers; William Pavlosky; Betsy Schaefer; Maria Densmore; Yousef Al-Semaan; Peter C Williamson
Glutamate and glutamine measured with 4.0 T proton MRS in never-treated patients with schizophrenia and healthy volunteers.
The American journal of psychiatry 2002;159(11):1944-6.
2002: Ruth A Lanius; Peter C Williamson; Kristine Boksman; Maria Densmore; Madhulika Gupta; Richard W J Neufeld; Joseph S Gati; Ravi S Menon
Brain activation during script-driven imagery induced dissociative responses in PTSD: a functional magnetic resonance imaging investigation.
Biological psychiatry 2002;52(4):305-11.
2002: J Eric Jensen; Dick J Drost; Ravi S Menon; Peter C Williamson
In vivo brain (31)P-MRS: measuring the phospholipid resonances at 4 Tesla from small voxels.
NMR in biomedicine 2002;15(5):338-47.
2002: J Eric Jensen; Yousef Al-Semaan; Peter C Williamson; Richard W J Neufeld; Ravi S Menon; Betsy Schaeffer; Maria Densmore; Dick J Drost
Region-specific changes in phospholipid metabolism in chronic, medicated schizophrenia: (31)P-MRS study at 4.0 Tesla.
The British journal of psychiatry : the journal of mental science 2002;180():39-44.
2001: Ruth A Lanius; Peter C Williamson; Maria Densmore; Kristine Boksman; Madhulika A Gupta; Richard W J Neufeld; Joseph S Gati; Ravi S Menon
Neural correlates of traumatic memories in posttraumatic stress disorder: a functional MRI investigation.
The American journal of psychiatry 2001;158(11):1920-2.
2001: Ashok K Malla; Ross M G Norman; SL Morrison-Stewart; Peter C Williamson; Edward Helmes; Leonardo Cortese
Does sex influence the relation between symptoms and neurocognitive functions in schizophrenia?
Journal of psychiatry & neuroscience : JPN 2001;26(1):49-54.
2000: Robert Bartha; Dick J Drost; Ravi S Menon; Peter C Williamson
Spectroscopic lineshape correction by QUECC: combined QUALITY deconvolution and eddy current correction.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2000;44(4):641-5.
2000: Robert Bartha; Dick J Drost; Ravi S Menon; Peter C Williamson
Comparison of the quantification precision of human short echo time (1)H spectroscopy at 1.5 and 4.0 Tesla.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2000;44(2):185-92.
1999: Robert Bartha; Peter C Williamson; Dick J Drost; Ashok K Malla; Richard W J Neufeld
Medial prefrontal glutamine and dreaming.
The British journal of psychiatry : the journal of mental science 1999;175():288-9.
1999: Robert Bartha; Dick J Drost; Peter C Williamson
Factors affecting the quantification of short echo in-vivo 1H MR spectra: prior knowledge, peak elimination, and filtering.
NMR in biomedicine 1999;12(4):205-16.
1999: Robert Bartha; Yousef Al-Semaan; Peter C Williamson; Dick J Drost; Ashok K Malla; Thomas J Carr; Maria Densmore; G Canaran; Richard W J Neufeld
A short echo proton magnetic resonance spectroscopy study of the left mesial-temporal lobe in first-onset schizophrenic patients.
Biological psychiatry 1999;45(11):1403-11.
1999: J J Potwarka; Dick J Drost; Peter C Williamson; Thomas J Carr; G Canaran; W J Rylett; Richard W J Neufeld
A 1H-decoupled 31P chemical shift imaging study of medicated schizophrenic patients and healthy controls.
Biological psychiatry 1999;45(6):687-93.
1999: J J Potwarka; Dick J Drost; Peter C Williamson
Quantifying 1H decoupled in vivo 31P brain spectra.
NMR in biomedicine 1999;12(1):8-14.
1998: Robert Bartha; M B Stein; Peter C Williamson; Dick J Drost; Richard W J Neufeld; Thomas J Carr; G Canaran; Maria Densmore; G Anderson; A R Siddiqui
A short echo 1H spectroscopy and volumetric MRI study of the corpus striatum in patients with obsessive-compulsive disorder and comparison subjects.
The American journal of psychiatry 1998;155(11):1584-91.
1997: Robert Bartha; Peter C Williamson; Dick J Drost; Ashok K Malla; Thomas J Carr; Leonardo Cortese; G Canaran; Rebecca Rylett; Richard W J Neufeld
Measurement of glutamate and glutamine in the medial prefrontal cortex of never-treated schizophrenic patients and healthy controls by proton magnetic resonance spectroscopy.
Archives of general psychiatry 1997;54(10):959-65.
1997: Ross M G Norman; Ashok K Malla; Peter C Williamson; SL Morrison-Stewart; Edward Helmes; Leonardo Cortese
EEG coherence and syndromes in schizophrenia.
The British journal of psychiatry : the journal of mental science 1997;170():411-5.
1997: A D Hinsberger; Peter C Williamson; Thomas J Carr; Jeffrey Stanley; Dick J Drost; Maria Densmore; G C MacFabe; D G Montemurro
Magnetic resonance imaging volumetric and phosphorus 31 magnetic resonance spectroscopy measurements in schizophrenia.
Journal of psychiatry & neuroscience : JPN 1997;22(2):111-7.
1997: Ross M G Norman; Ashok K Malla; SL Morrison-Stewart; Edward Helmes; Peter C Williamson; J Thomas; Leonardo Cortese
Neuropsychological correlates of syndromes in schizophrenia.
The British journal of psychiatry : the journal of mental science 1997;170():134-9.
1997: Peter C Williamson; Ashok K Malla; Leonardo Cortese; A Jon Stoessl; Dick J Drost; Jeffrey Stanley
Phosphorus 31 magnetic resonance spectroscopy in patients with Huntington disease.
Archives of general psychiatry 1997;54(2):186-8.
1996: Peter C Williamson; M Brauer; S Leonard; T Thompson; Dick J Drost
31P magnetic resonance spectroscopy studies in schizophrenia.
Prostaglandins, leukotrienes, and essential fatty acids 1996;55(1-2):115-8.
1996: Jeffrey Stanley; Peter C Williamson; Dick J Drost; Rebecca Rylett; Thomas J Carr; Ashok K Malla; R Terry Thompson
An in vivo proton magnetic resonance spectroscopy study of schizophrenia patients.
Schizophrenia bulletin 1996;22(4):597-609.
1995: Jeffrey Stanley; Dick J Drost; Peter C Williamson; R Terry Thompson
The use of a priori knowledge to quantify short echo in vivo 1H MR spectra.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1995;34(1):17-24.
1995: Jeffrey Stanley; Peter C Williamson; Dick J Drost; Thomas J Carr; Rebecca Rylett; Ashok K Malla; R Terry Thompson
An in vivo study of the prefrontal cortex of schizophrenic patients at different stages of illness via phosphorus magnetic resonance spectroscopy.
Archives of general psychiatry 1995;52(5):399-406.
1994: Jeffrey Stanley; Peter C Williamson; Dick J Drost; Thomas J Carr; Rebecca Rylett; S Morrison-Stewart; R Terry Thompson
Membrane phospholipid metabolism and schizophrenia: an in vivo 31P-MR spectroscopy study.
Schizophrenia research 1994;13(3):209-15.
1992: S L Morrison-Stewart; Peter C Williamson; W C Corning; S P Kutcher; W G Snow; H Merskey
Frontal and non-frontal lobe neuropsychological test performance and clinical symptomatology in schizophrenia.
Psychological medicine 1992;22(2):353-9.
1991: S L Morrison-Stewart; Peter C Williamson; W C Corning; S P Kutcher; H Merskey
Coherence on electroencephalography and aberrant functional organisation of the brain in schizophrenic patients during activation tasks.
The British journal of psychiatry : the journal of mental science 1991;159():636-44.
1989: Peter C Williamson; H Kaye
EEG mapping applications in psychiatric disorders.
Canadian journal of psychiatry. Revue canadienne de psychiatrie 1989;34(7):680-6.
1989: Peter C Williamson; S P Kutcher; P W Cooper; W G Snow; J P Szalai; H Kaye; S L Morrison; R A Willinsky; M Mamelak
Psychological, topographic EEG, and CT scan correlates of frontal lobe function in schizophrenia.
Psychiatry research 1989;29(2):137-49.
1986: Peter C Williamson; A Csima; H Galin; M Mamelak
Spectral EEG correlates of dream recall.
Biological psychiatry 1986;21(8-9):717-23.