Question

Human memories are formed...?

Answer 1

Answer:

Memories occur when specific groups of neurons are reactivated. In the brain, any stimulus results in a particular pattern of neuronal activity—certain neurons become active in more or less a particular sequence. If you think of your cat, or your home, or your fifth birthday cake, different ensembles, or groups, of neurons become active. The theory is that strengthening or weakening synapses makes particular patterns of neuronal activity more or less likely to occur.

As a five-year-old, if given the word 'house', you might have imagined a drawing of a house. As an adult, upon hearing the same word you may well picture your own house—a different response for the same input.

This is because your experience and memories have changed the connections between neurons, making the old 'house' ensemble less likely to occur than the new 'house' ensemble.

In other words, recalling a memory involves re-activating a particular group of neurons. The idea is that by previously altering the strengths of particular synaptic connections, synaptic plasticity makes this possible.

Explanation:

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