Tuesday, December 14, 2004

Blindsight

No Right Turn links to a fascinating article on perception -

Discriminating emotional faces without primary visual cortices involves the right amygdala.

If I'm reading the concluding paragraph correctly their seems to be a type of fast-tracking of facial information -
...strong evidence that the hypothesized colliculo-pulvinar route possesses sufficient resolution to convey information about facial expressions but not other, less habitual emotional stimuli. By contrast, emotional scenes of a more complex nature appear to necessitate initial processing by cortical visual areas before an amygdala response can be made, a view previously suggested for the processing of emotional faces.

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