G
Gregg Cohen
Researcher at University of Iowa
Publications - 16
Citations - 3174
Gregg Cohen is an academic researcher from University of Iowa. The author has contributed to research in topics: Magnetic resonance imaging & Image processing. The author has an hindex of 14, co-authored 16 publications receiving 3144 citations. Previous affiliations of Gregg Cohen include University of Iowa Hospitals and Clinics.
Papers
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Journal ArticleDOI
Hypofrontality in neuroleptic-naive patients and in patients with chronic schizophrenia. Assessment with xenon 133 single-photon emission computed tomography and the Tower of London.
Nancy C. Andreasen,Karim Rezai,Randall Alliger,Victor W. Swayze,Michael Flaum,Peter T. Kirchner,Gregg Cohen,Daniel S. O'Leary +7 more
TL;DR: The results suggest that hypofrontality is related to negative symptoms and is not a long-term effect of neuroleptic treatment or of chronicity of illness.
Journal ArticleDOI
Magnetic resonance imaging of the brain in schizophrenia. The pathophysiologic significance of structural abnormalities.
Nancy C. Andreasen,James C. Ehrhardt,Victor W. Swayze,Randall Alliger,William T. C. Yuh,Gregg Cohen,Steven Ziebell +6 more
TL;DR: In a second large series of schizophrenic patients studied with magnetic resonance imaging at the University of Iowa, Iowa City, earlier findings of decreased frontal, cerebral, and cranial size were not replicated.
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Intelligence and Brain Structure in Normal Individuals
Nancy C. Andreasen,Michael Flaum,Victor W. Swayze,Daniel S. O'Leary,Randall Alliger,Gregg Cohen,James C. Ehrhardt,William T. C. Yuh +7 more
TL;DR: The results suggest that the size of some cerebral structures may account for a significant, but modest, proportion of the variance in human intelligence.
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Image processing for the study of brain structure and function: problems and programs.
Nancy C. Andreasen,Gregg Cohen,Greg Harris,Ted Cizadlo,Jussi Parkkinen,Karim Rezai,V W Swayze nd +6 more
TL;DR: A group of software programs are described designed to provide a comprehensive solution for fundamental problems in the analysis of functional and structural imaging data, including data transport, boundary identification, and tissue segmentation.
Journal ArticleDOI
The Neuropsychology of the Prefrontal Cortex
TL;DR: Findings indicate that regional activation of the frontal lobes occurs in response to cognitive challenges produced through performance of standard neuropsychological tests.