PSYC 2800 Lecture Notes - Substantia Nigra, Basal Forebrain, Basal Ganglia
20 Apr 2012
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Document Summary
The frontal lobe and short-term memory: all sensory systems project to the frontal lobes. There are a lot of inputs going into the frontal lobe but little coming out of lobe. Location of working memory: during tasks in which monkeys must keep information in short-term memory over a delay, certain cells in the frontal cortex will fire throughout the delay. Animals that have not learned the task show no such cell activity. Delayed response task- same location as cue. If we do single cell recording, where we"re actually measuring the firing of the cells in the frontal lobe what happens is that we get very specific cells that fire throughout the delayed period. The neocortex projects to the entorhinal cortex, which projects back to the neocortex. Signals from the medial temporal regions back to the cortical sensory regions keep the sensory experience alive in the brain: the idea that the neural record outlasts the experience.
