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Excitatory: meaning, definitions and examples

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excitatory

 

[ ɪkˈsɪtəˌtɔri ]

Adjective
Context #1 | Adjective

neuroscience function

Excitatory refers to the ability of a substance or signal to increase the activity or function of a neuron or muscle. In terms of neurotransmitters, excitatory signals lead to the generation of action potentials, promoting further signaling in nerve cells.

Synonyms

activating, boosting, stimulating.

Examples of usage

  • Glutamate is an excitatory neurotransmitter in the brain.
  • Excitatory signals help in muscle contraction.
  • The role of excitatory neurons is crucial for memory formation.

Etymology

The term 'excitatory' is derived from the Latin verb 'excitare,' which means 'to rouse or awaken.' The prefix 'ex-' intensifies the meaning, while 'citare' means 'to put in motion.' The concept of excitatory elements in neurology emerged in the late 19th century when scientists began to understand how neurons communicate with each other. Early studies on nerve impulses and neurotransmitters laid the groundwork for this understanding. The differentiation between excitatory and inhibitory signals became pivotal in neurological research, leading to advances in understanding brain function and disorders. Today, 'excitatory' is a fundamental concept in neuroscience, psychology, and pharmacology, particularly concerning how various drugs can facilitate or inhibit neuronal activity.

Word Frequency Rank

With rank #19,532, this word belongs to specialized vocabulary. While not common in everyday speech, it enriches your ability to express complex ideas.