Journal
MOLECULAR PSYCHIATRY
Volume 8, Issue 3, Pages 261-274Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.mp.4001205
Keywords
neuromorphology; EEG; neuropsychology; hemispheric interactions; cerebral cortex; neural connections; hypoconnectivity; hyperconnectivity; misconnectivity
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The Zeitgeist favors an interpretation of schizophrenia as a condition of abnormal connectivity of cortical neurons, particularly in the prefrontal and temporal cortex. The available evidence points to reduced connectivity, a possible consequence of excessive synaptic pruning in development. A decreased thalamic input to the cerebral cortex appears likely, and developmental studies predict that this decrease should entail a secondary loss of both long- and short-range cortico-cortical connections, including connections between the hemispheres. Indeed, morphological, electrophysiological and neuropsychological studies over the last two decades suggest that the callosal connections are altered in schizophrenics. However, the alterations are subtle and sometimes inconsistent across studies, and need to be investigated further with new methodologies.
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