Cellular Mechanisms in Learning and Memory

Cellular Mechanisms in Learning and Memory - interpositus...

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Cellular Mechanisms in Learning and Memory Types of Learning 1. Non-associative learning- the functional changes that ensue when an organism interacts with a single form of stimulus a. Habituation and sensitization are non-associative forms of learning 2. Associative learning - subject associates previously neutral stimulus with response usually generated by another cue (Pavlov’s dog) Definitions 1. Sensitization - ability of nonspecific but strongly arousing sensory stimulation to enhance effectiveness of synaptic transmission in other neuronal pathways 2. Long term potentiation - long lasting enhancement of synaptic transmission NE cells fire when novel sensory events occur in the external environment, but other neurotransmitter systems are also at work Critical sites for producing associations are located in
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Unformatted text preview: interpositus nucleus , one of the deep cerebellar nuclei Natural memory drugs Vasopressin *Named for potent ability to increase blood pressure *Supposedly acts directly on memory processes and can be an aversive hormone that arouses animal and causes it to learn better Discrete lesions of human hippocampus lead to profound anterograde amnesia Hippocampus is not among cortical sites where functional activation ccurs during complex memory forming/testing tasks. Frontal ccortex is activated during these tasks. Information processing is tied to areas of brain that are engaged during learning Guanfacine improves behavioral and learning problems of kids with ADHD, and improved memory w/o inducing hypotension or sedation in monkeys...
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This document was uploaded on 04/06/2011.

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