excitation
- Noun:
- The act of exciting or state of being excited; agitation or arousal: "Excitation" refers to the process of stimulating something or someone, or the resulting state of heightened activity, energy, or emotion.
- The action of applying energy to a system, particle, or atom to raise it to a higher energy level: In physics and engineering, "excitation" describes the process of adding energy to a system, such as an atom or an electrical circuit, causing it to enter an excited state.
- The electrical or neural stimulation of an organ, muscle, or gland: In physiology and biology, "excitation" denotes the triggering of activity in a cell, tissue, or organ through an electrical or chemical signal.
General/Emotional Context:
- The excitation of the crowd was palpable as the band took the stage.
- She felt a nervous excitation before her important presentation.
Scientific/Technical Context:
- The excitation of the atom by a photon of light causes an electron to jump to a higher orbit.
- Proper neuronal excitation is essential for muscle contraction.
"Excitation threshold": The minimum level of stimulus required to trigger a response in a nerve, muscle, or other excitable tissue.
- The drug lowers the excitation threshold of cardiac cells, which can lead to arrhythmia.
"Excitation-contraction coupling": The physiological process in muscle fibers where an electrical signal (excitation) leads to a mechanical contraction.
- Calcium ions play a crucial role in excitation-contraction coupling in skeletal muscle.
"Excitation energy": In physics and chemistry, the energy required to raise a system from its ground state to an excited state.
- The molecule absorbed the photon's energy, which provided the necessary excitation energy.
Excite (verb): To stir up or rouse feelings, activity, or energy; to apply energy to a system.
- The news will excite the investors.
Excited (adjective): Being in a state of excitement; having been raised to a higher energy level.
- The excited children couldn't sleep.
- An excited electron will eventually return to its ground state.
Excitable (adjective): Easily excited.
- He has an excitable temperament.
Excitatory (adjective): Tending to excite or stimulate, especially in a neural context (opposite of inhibitory).
- Glutamate is the primary excitatory neurotransmitter in the central nervous system.
- Stimulation: The action of arousing interest, enthusiasm, or physiological activity.
- Arousal: A state of physiological and psychological readiness or excitement.
- Agitation: A state of nervous excitement or disturbance.
- Provocation: Action or speech that makes someone annoyed or angry, especially deliberately.
- "In a state of excitation": Experiencing heightened emotional or physiological arousal.
- The patient was in a state of high excitation following the seizure.
- Emotional/Psychological Meaning: Pertains to feelings of eagerness, enthusiasm, or nervous agitation.
- Physical/Physiological Meaning: Refers to the activation of a biological system, such as a nerve or muscle.
- Physics/Engineering Meaning: Describes the input of energy into a system (e.g., electrical, electromagnetic) to change its state.
- something that agitates and arouses
- he looked forward to the excitements of the day
- the neural or electrical arousal of an organ or muscle or gland
- the state of being emotionally aroused and worked up
- his face was flushed with excitement and his hands trembled
- he tried to calm those who were in a state of extreme inflammation