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lecture 15 learning_memory

lecture 15 learning_memory - Lecture 15 Learning and Memory...

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11/10/2008 1 Lecture 15 : Learning and Memory Overview 1. Review 2 Eating disorders 2. 3. Definition of learning and memory 4. Types of memory 5. Anatomy of learning and memory Learning: a long term change in behavior as a function of experiences. Also: LEARNING consists of the acquisition, storage and retrieval of MEMORY Learning and Memory definition Memory: the capacity to retain and retrieve past experiences. Where is memory located?: Lashley assumed that memories were stored in CORTEX. However , cortical lesions in rats usually impaired performance but the animals could relearn the task. He proposed the “LAWS” of MASS ACTION (the more damage, the greater the deficit) and EQUI- POTENTIALITY (different regions of the cortex could do the same task).
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11/10/2008 2 Habituation A decrease in response following repeated exposure to a non- threatening stimulus. Types of Learning Sensitization An increase in reactivity to a stimulus following exposure to an intense event. Pavlovian Conditioning Type of learning in which a neutral stimulus is paired with a stimulus that elicits a reflex response until the neutral stimulus elicits the reflex response by itself. Stimulus-Response Learning Stimulus-response learning: learning to automatically make a particular response in the presence of a particular stimulus. A) Classical conditioning (Pavlovian conditioning) i l t ti i t i l (f d k h — involves automatic, species-typical responses (food makes a hungry animal salivate…) — involves an association between two stimuli
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