Stimuli is a thing or event that evokes a specific functional reaction in an organ or tissue.
Memories occur when specific groups of neurons are reactivated. In the brain, any stimulus results in a particular pattern of neuronal activity, i.e., certain neurons become active in more or less a particular sequence.
Memory serves human beings in many complex ways. It enables us to process our environment, improve behavior and give context to our lives.
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Reference : https://brainly.com/question/20253822