Impaired body movement; without movement (or without much movement). Akinesia is a term used in neurology to denote the absence (or poverty) of movement. The word "akinetic" comes from the prefix "a-" meaning "without" + the Greek word "kinesis" meaning motion = without motion. For example, a person in coma is akinetic. For another example, akinetic mutism is a condition in which a person is both mute and akinetic. A textbook on clinical neurology observes that a person with akinetic mutism has "sleep-waking cycles but, when apparently awake, with eyes open, lies mute. immobile and unresponsive."
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1. Absence or loss of the power of voluntary movement, due to an extrapyramidal disorder. 2. Obsolete term denoting the postsystolic interval of rest of the heart. 3. A neurosis accompanied by paretic symptoms. SYN: akinesis. [G. a- priv. + kinesis, movement]
- a. algera a condition marked by severe generalized pain produced by any movement; often of psychogenic origin. [G. algos, pain]
- a. amnestica loss of muscular power from disuse.

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aki·ne·sia .ā-kī-'nē-zh(ē-)ə n loss or impairment of voluntary activity (as of a muscle)

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a loss of normal muscular tonicity or responsiveness. Akinetic rigid syndrome is used to describe such conditions as parkinsonism and progressive supranuclear palsy. In akinetic epilepsy there is a sudden loss of muscular tonicity, making the patient fall with momentary loss of consciousness. Akinetic mutism is a state of complete physical unresponsiveness although the patient's eyes remain open and appear to follow movements. It is a consequence of damage to the base of the brain.
akinetic adj.

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aki·ne·sia (a″kĭ-neґzhə) [a-1 + kinesi- + -ia] 1. absence, poverty, or lack of control of voluntary muscle movements. 2. the temporary paralysis of a muscle by the injection of procaine. akinetic adj

Medical dictionary. 2011.

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  • Akinesia — (from the prefix a , without , and the Greek κίνηση, kinisi , motion ) is the inability to initiate movement due to difficulty selecting and/or activating motor programs in the central nervous system. Common in severe cases of Parkinson s disease …   Wikipedia

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  • akinesia — akinetic /ay ki net ik, kuy /, adj. /ay ki nee zheuh, kuy /, n. Pathol. absence, loss, or impairment of the power of voluntary movement. Also, akinesis /ay ki nee sis, kuy , ay kin euh sis/. [ < NL < Gk akinesía; see A 6, KINESIA] * * * …   Universalium

  • akinesia — [ˌeɪkɪ ni:sɪə, a ] noun Medicine loss or impairment of the power of voluntary movement. Derivatives akinetic adjective Origin C19: from Gk akinēsia quiescence …   English new terms dictionary

  • akinesia — n. [Gr. a, without; kinesis, motion] Loss or disturbance of motion, as in certain insects, resulting from loss of antennae …   Dictionary of invertebrate zoology

  • akinesia — noun The loss of the ability to control motor muscles See Also: akinetic …   Wiktionary

  • akinesia — n. lack of movement, loss of movement (due to pathological causes) …   English contemporary dictionary

  • akinesia — aki·ne·sia …   English syllables

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