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Inhibitory Neurotransmitter

Meaning

An Inhibitory Neurotransmitter is a chemical messenger released by a presynaptic neuron that decreases the likelihood of a postsynaptic neuron firing an action potential, essentially applying a “brake” to neural activity. These critical signaling molecules function by causing hyperpolarization of the neuronal membrane, making the cell less excitable. Gamma-Aminobutyric Acid (GABA) and glycine are the most prevalent examples in the central nervous system, playing essential roles in regulating anxiety, promoting sleep, and preventing over-excitation. A healthy balance between inhibitory and excitatory neurotransmission is paramount for maintaining neurological and psychological stability.