Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

The relationship between "connectivity" measures such as DTI and the cellular alterations in the cortex that give rise to those connections remains unclear. Cytoarchitectural changes in the planum temporale (PT) suggest impaired layer III feedforward projection neurons in schizophrenia. Altered hemispheric asymmetry of the PT has been reported in patients, along with altered white matter density in the corpus callosum, and there is anomalous activation of the PT during auditory hallucinations. We measured layer III cell density and pyramidal neuron size in PT of both hemispheres of post-mortem brains from patients with schizophrenia (n=16) and control subjects (n=16). We found reduced cell density and the loss of a correlation between magnopyramidal neuron density and axon number in the isthmus of the corpus callosum in schizophrenia. The normal asymmetry indicated that magnopyramidal neurons tend towards being larger and denser in the left PT but this asymmetry is significantly reduced in schizophrenia. The findings offer cytoarchitectural insight into the relationship between PT cortex and callosal white matter abnormalities in schizophrenia.

Original publication

DOI

10.1016/j.neures.2011.08.007

Type

Journal article

Journal

Neurosci Res

Publication Date

12/2011

Volume

71

Pages

405 - 410

Keywords

Aged, Autopsy, Axons, Cell Count, Corpus Callosum, Female, Humans, Male, Neural Pathways, Pyramidal Cells, Schizophrenia