Inhibitory refers to the process of restraining or limiting certain actions or functions. In biological contexts, it often describes how certain neurotransmitters, like GABA, can reduce the likelihood of a neuron firing, thereby decreasing activity in the nervous system. This mechanism is crucial for maintaining balance in brain function and preventing overactivity. Inhibitory signals can also be found in various systems, such as biochemistry and psychology. For example, in biochemistry, inhibitors can block enzymes, slowing down or stopping chemical reactions. In psychology, inhibitory control is the ability to suppress impulsive responses, which is essential for decision-making and self-regulation.