Multiple-unit activity of the rabbit medial geniculate nucleus in conditioning, extinction, and reversal
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TL;DR
Multiple-unit activity was recorded from the rabbit medial geniculate nucleus during pretraining, avoidance conditioning, and extinction (Experiment 1), and during differential avoidance conditioning and reversal (Experiments 2).
Abstract
Multiple-unit activity was recorded from the rabbit medial geniculate nucleus (MGN) during pretraining, avoidance conditioning, and extinction (Experiment 1), and during differential avoidance conditioning and reversal (Experiment 2). The CSs were tones and the UCS was shock in both studies. Locomotion within a wheel apparatus was the response. Three of the seven neuronal regions sampled in Experiment 1 showed evidence of short latency associative activity in the form of stimulus control during extinction. Five of seven regions sampled in Experiment 2 showed short-latency stimulus control, which developed during differential conditioning and reversed when the CS+ and CS− were interchanged.
