What does excitatory mean?

Definitions for excitatory
ex·ci·ta·to·ry

This dictionary definitions page includes all the possible meanings, example usage and translations of the word excitatory.

Princeton's WordNet

  1. excitant, excitative, excitatoryadjective

    (of drugs e.g.) able to excite or stimulate

Wiktionary

  1. excitatoryadjective

    stimulating, exciting or causing excitation; excitative

Wikipedia

  1. excitatory

    In neuroscience, an excitatory postsynaptic potential (EPSP) is a postsynaptic potential that makes the postsynaptic neuron more likely to fire an action potential. This temporary depolarization of postsynaptic membrane potential, caused by the flow of positively charged ions into the postsynaptic cell, is a result of opening ligand-gated ion channels. These are the opposite of inhibitory postsynaptic potentials (IPSPs), which usually result from the flow of negative ions into the cell or positive ions out of the cell. EPSPs can also result from a decrease in outgoing positive charges, while IPSPs are sometimes caused by an increase in positive charge outflow. The flow of ions that causes an EPSP is an excitatory postsynaptic current (EPSC). EPSPs, like IPSPs, are graded (i.e. they have an additive effect). When multiple EPSPs occur on a single patch of postsynaptic membrane, their combined effect is the sum of the individual EPSPs. Larger EPSPs result in greater membrane depolarization and thus increase the likelihood that the postsynaptic cell reaches the threshold for firing an action potential. EPSPs in living cells are caused chemically. When an active presynaptic cell releases neurotransmitters into the synapse, some of them bind to receptors on the postsynaptic cell. Many of these receptors contain an ion channel capable of passing positively charged ions either into or out of the cell (such receptors are called ionotropic receptors). At excitatory synapses, the ion channel typically allows sodium into the cell, generating an excitatory postsynaptic current. This depolarizing current causes an increase in membrane potential, the EPSP.

ChatGPT

  1. excitatory

    Excitatory refers to the process or substance that increases the likelihood or intensity of neural activity, promotes the firing of neurons, or stimulates an action within a biological system. It can be related to neurons, neurotransmitters, synapses, or behaviors which contribute to the enhancement or activation of certain biological responses.

Webster Dictionary

  1. Excitatoryadjective

    tending to excite; containing excitement; excitative

  2. Etymology: [Cf. F. excitatoire.]

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Numerology

  1. Chaldean Numerology

    The numerical value of excitatory in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of excitatory in Pythagorean Numerology is: 5

Examples of excitatory in a Sentence

  1. Cynthia Otto:

    Dogs may go through an excitatory phase, they might actually start panting and they may pace around, it sort of depends on the dog’s personality, too.

Popularity rank by frequency of use

excitatory#10000#50985#100000

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"excitatory." Definitions.net. STANDS4 LLC, 2024. Web. 20 May 2024. <https://www.definitions.net/definition/excitatory>.

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