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Extrastriate cortical areas activated during visual discrimination in man | JoVE Visualize

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Extrastriate cortical areas activated during visual discrimination in man

P E Roland, E Skinhøj

Brain Research|October 5, 1981

View abstract on PubMed

Summary

Visual shape discrimination significantly boosts regional cerebral blood flow (rCBF) in key brain areas like the frontal eye fields and lateral occipital cortex. This study maps blood flow changes during visual tasks.

Area of Science:

Neuroscience
Cognitive Neuroscience

Background:

The extrastriate cerebral cortex processes visual information.
Understanding regional brain activity during cognitive tasks is crucial.

Purpose of the Study:

To investigate changes in regional cerebral blood flow (rCBF) during visual shape discrimination.
To identify specific brain regions affected by visual processing tasks.

Main Methods:

Measured rCBF in 254 regions of the human extrastriate cerebral cortex.
Compared rCBF during rest versus during a visual shape discrimination task.

Main Results:

Marked increases in rCBF observed in frontal eye fields, prefrontal cortex, lateral occipital cortex, and superior parietal cortex.
Moderate rCBF increases noted in inferotemporal cortex and parietotemporo-occipital regions.

Conclusions:

Visual shape discrimination engages specific extrastriate cortical regions.
rCBF changes reflect the neural demands of visual processing and attention.

Computer Vision And Multimedia Computation

Extrastriate Cortical Areas Activated During Visual Discrimination In Man