Abnormality in visual regions of the brain that is associated with a person's general risk for psychiatric disorders, found research.

‘Abnormality in visual regions of the brain that is associated with a person's general risk for psychiatric disorders.’

"In this paper by Elliott and colleagues, reduced cortical efficiency may be one of these general risk traits," said John Krystal, MD, Editor of Biological Psychiatry.
The 605 university students included in the study were a subset from the larger Duke Neurogenetics Study. Many of the participants met criteria for psychiatric disorders, including alcohol or substance use disorder, major depressive disorder, and bipolar disorder. However, rather than dividing the participants by a specific diagnosis, Elliott and colleagues gave each person a score that reflected their general mental health liability based on psychiatric assessments.
Functional magnetic resonance imaging (fMRI) of the whole brain identified a relationship between the individual scores and increased connectivity between the visual cortex and specific brain networks important for high level thinking. The networks, referred to as default mode network and frontoparietal network, are critical for behaviors aimed at completing a particular task, and suppressing internal distractions to tease out sensory information relevant to that task. 




"These patterns suggest that broad risk for mental illness may reflect subtle problems in how a person is able to integrate their thoughts, plans, and actions with their fundamental experience of the world, which in humans is principally represented by visual information," said Mr. Elliott.
Source-Eurekalert