Global and fine information coded by single neurons in the temporal visual cortex.

摘要: When we see a person's face, can easily recognize their species, individual identity and emotional state. How does the brain represent such complex information? A substantial number of neurons in macaque temporal cortex respond to faces1,2,3,4,5,6,7,8,9,10,11,12. However, neuronal mechanisms underlying processing ofcomplex information are not yet clear. Here recorded activity single monkeys while presenting visual stimuli consisting geometric shapes, monkey human faces with various expressions. Information theory was used investigate how well responses could categorize stimuli. We found that conveyed two different scales facial intheir firing patterns, starting at latencies. Global information, categorizing as faces, or earliest part responses. Fineinformation about expression later,beginning on average 51 ms after global information. speculate be ‘header’ prepare destination areas for receiving more detailed