Exam 3: Intracranial Generators of Cognitive ERPs (ie faces)

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4 Terms

1
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What processing stream is engaged during face processing?

Ventral visual stream (ventral temporal cortex)

2
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Where is the N170 to faces generated?

The fusiform cortex (it is larger to faces than to words)

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How about later ERPs (after 300-400ms)? How and where are they generated? What do they represent?

  • They are seen to BOTH faces and words and are comparable in the anterior temporal and inferior prefrontal cortex.

  • Represents cognitive processing and integration within the context.

4
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What are the basic characteristics of the spatio-temporal model of cognitive processing?

The following activity advances down the ventral visual stream:

  • Early visual processing (~100 ms in the occipital cortex)

  • → material-specific encoding (~170 ms) in the fusiform gyrus

  • → cognitive integration (integration of semantic, memory, and emotional associations) (~230-700 ms) in the anterior temporal and prefrontal cortices, which results in conscious recognition