Postsynaptic structural changes in longer-lasting learning.

Classical conditioning A type of associative learning in which a neutral stimulus acquires the ability to signal the occurrence of a second, biologically significant event.

Convergence of input from both the conditioned stimulus (CS)

and the unconditioned stimulus (UCS) increases the amount of neurotransmitter released by the sensory neuron and stimulates postsynaptic changes in glutamate receptors.

Operant conditioning A type of associative learning in which the consequences of a behavior influence the future frequency of the behavior.

Possibly changes in excitability in particular neurons, like the Aplysia B51.

Social learning Learning through observation of others.

Similar processes as other forms of learning accompanied by a social component.