PSYO 1011 Lecture Notes - Lecture 19: Excitatory Synapse, Episodic Memory, Long-Term Memory
11 Nov 2018
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Document Summary
Brain does not change size depending on our amount of memories. There must be some change in neurons when we learn memories: when one neuron fires and excites another neuron, there is a temporary memory trace that reverberates across the synapse for a short second. If neuron is particular active (in synapse) with other neuron than. If this memory trace persists, it is followed by a permanent change in the receiving neuron, the excitatory neuron, or both. Cell assembly - repeated stimulation of a group of neurons in this way leads to a formation of cell assembly. The more times the synapses in these assemblies fire together to stronger the network becomes, which increases the likelihood that they will fire together again. Use it or lose it - if the cell assemblies are not stimulated repeatedly, eventually the synaptic connections weaken and we forget. Possible step 1 - long term potentiation - enhanced activity.
