PSYC 100 Lecture Notes - Lecture 21: Donald O. Hebb, Hebbian Theory, Long-Term Potentiation

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Oliver Michael Hardt

Document Summary

Psyc100 lecture 21 (tuesday,13th november) (cont. of memory) Synapses as seat of memory changes in connections between neurons are how memories are stored in a system. Dendritic arm, spike, post-synaptic density (where neurons connect) Number of dendritic spines increasing as learning occurs (over course of training) Not only increase in number of spines (sprouting) but also pruning (after sprouting, pruning occurs when spines are reduced) Optimizing pattern in the end represents a memory. As a baby we have many spines, but we optimize as grow older. Donald hebb dual model: principle of associate learning. Stm-ltm model: experiences represented in brain in the form of cell assembly. During encoding, pattern of firing represents the experience you currently. Stm: if thousand neurons, they all fire in the same was as the experience is created (as long as firing goes on the activity persists)