PSYB64H3 Chapter Notes - Chapter 9: Withdrawal Reflex, Aplysia, Sensory Neuron
5 Jul 2016
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The behavior of organisms can be separated into three major categories: Reflexes: involuntary responses to a stimulus; are produced by prewired neural connections or reflex arcs and produce rapid, reliable responses. Learned behaviors: a relatively permanent change in behavior or the capacity for behavior due to experience only those behavioral changes that result from experience will be considered learned. Conditioned stimulus: an initially neutral event that takes on the ability to signal other biologically significant events. Unconditioned stimulus: an event that elicits a response without prior experience. Conditioned response: a learned reaction to the conditioned stimulus. Unconditioned response: a spontaneous unlearned reaction to a stimulus without prior experience. The us and the cs pairing may only need to occur once for some types of learning such as conditioned taste aversions, but often require multiple pairings in order to form an association between the cs and us. Simple neural networks make aplysia an ideal candidate for the study of learning.
