PSYC 317 Lecture Notes - Lecture 14: Fusiform Face Area, Connectionism, Backpropagation
31 Oct 2018
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Knowledge part 2: the connectionist approach: creating computer models for representing cognitive processes. Parallel distributed processing models: knowledge represented in the distributed activity of many units, weights determine at each connection how strongly an incoming signal will activate the next unit. It is based on how information is represented in the brain. It can explain a number of findings, including how concepts are learned and how da(cid:373)age to the (cid:271)rai(cid:374) affe(cid:272)ts people"s k(cid:374)owledge a(cid:271)out (cid:272)o(cid:374)(cid:272)epts: the connectionist approach cont. Input units: activated by stimulation from environment: hidden units: receive input from input units, output units: receive input from hidden units. An erroneous response is the difference between actual activity of each output unit and the correct activity: back-propagation: error signal transmitted back through the circuit. Specific: particular brain areas for categories like the fusiform face area (facial recognition)
