Receptor are molecules on the membranes of neurons to which neurotransmitters bind In the nervous system, a receptor is a specialized portion of an afferent neuron (or a special cell attached to an afferent neuron) that is sensitive to a form of energy in the environment.

Receptor is also a term that applies to unique proteins on the surface of cells that can bind specific hormones or neurotransmitters.

In the context of psychology, a receptor refers to a specific site on a neuron, cell, or organ that responds to a specific type of chemical messenger, such as a neurotransmitter, hormone, or neuromodulator. These chemical messengers bind to receptors, activating them and triggering a cascade of physiological and/or psychological effects.

Examples of receptors in psychology include:

It's important to note that the same neurotransmitter can have different type of receptors and different neurotransmitters may bind to the same receptor, for example, dopamine receptors are of two types D1 and D2 and a different agonist bind to the both receptors which leads to different physiological and psychological effects.