GSU NEUR 3000 - NEUR 3000 - Chapter 25 (39 pages)

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NEUR 3000 - Chapter 25



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NEUR 3000 - Chapter 25

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Pages:
39
School:
Georgia State University
Course:
Neur 3000 - Hon Principles of Neuroscience

Unformatted text preview:

MOLECULAR MECHANISMS OF LEARNING AND NEUR 3000 Dr Joseph J Normandin NEUROBIOLOGY OF MEMORY The neurobiology of memory attempts to understand where and how different types of information are stored We have seen some examples of where being explored The how has also been explored Hebb suggested that memory results from synaptic modification Cell assemblies have strengthened connections Invertebrate models Aplysia californica Vertebrate models rodents PROCEDURAL MEMORY Procedural memory is amenable to investigation as it does not depend on a model telling us what it remembers These memories are fairly simple and can be formed along reflex arcs that link sensation with motor output Molecular mechanisms may underscore principles that apply to all types of memory formation We can divide procedural memory into two categories Nonassociative learning Associative learning PROCEDURAL MEMORY Nonassociative learning A change in behavioral response that occurs over time as a result of a single type of stimulus Habituation Learning to ignore a stimulus that lacks meaning You don t feel the clothes on your back even though they are stimulating touch sensory neurons Sensitization Learning to intensify your response to a stimuli even those stimuli that were previously benign You hear a loud bang outside Just after your roommate knocks on your door and it causes you to jump out of your seat PROCEDURAL MEMORY PROCEDURAL MEMORY Associative learning Forming an association between two previously unrelated events Classical conditioning Associate a stimulus that evokes a response with another stimulus that does not normally provoke that response unconditional stimulus US evokes a unconditional response UR conditional stimulus CS requires conditioning training to produce a conditioned learned response CR PROCEDURAL MEMORY The dog has learned that bell predicts meat PROCEDURAL MEMORY Associative learning Instrumental conditioning operant conditioning Learn to associate a response with a



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