Presynaptic terminal is the tip of an axon, the point from which the axon releases chemicals.

In psychology, the term "presynaptic terminal" might be used to refer to the part of a neuron (nerve cell) that is located at the end of the axon (the long, thin part of the neuron that sends signals to other cells). The presynaptic terminal is responsible for releasing neurotransmitters (chemical messengers) into the synapse (the tiny gap between neurons) in order to transmit signals to other neurons or to muscles or other cells.

The presynaptic terminal is an important part of the nervous system, as it plays a crucial role in the transmission of signals between neurons. It is involved in a variety of functions, including the regulation of mood, behavior, and cognition.

For example, a psychologist might study the role of the presynaptic terminal in the transmission of signals between neurons in the brain, or might examine the effects of drugs or other substances on the function of the presynaptic terminal.

Overall, "presynaptic terminal" refers to the part of a neuron that is located at the end of the axon and is responsible for releasing neurotransmitters into the synapse in order to transmit signals to other neurons or to muscles or other cells. It is an important part of the nervous system and is involved in the regulation of mood, behavior, and cognition.

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