postactivation exhaustion

postactivation exhaustion
posttetanic exhaustion changes at the cellular level, such as decreased neuromuscular transmission, seen when repetitive nerve stimulation is performed a few minutes after intense neuromuscular activity; see also postactivation depression and postactivation facilitation.

Medical dictionary. 2011.

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  • postactivation depression — a reduction in amplitude and area of the M wave upon additional stimulus a few minutes after a strong violent contraction or after tetanus produced by repetitive nerve stimulation (q.v.). See also postactivation exhaustion, under exhaustion …   Medical dictionary

  • postactivation facilitation — posttetanic facilitation facilitation at the neuromuscular junction, consisting of a decreased decrementing response or increased amplitude of the M wave, when nerve stimulation is repeated a few seconds after a strong voluntary contraction or… …   Medical dictionary

  • repetitive nerve stimulation — repeated supramaximal stimulation of a motor nerve while recording the M wave of its muscle to note any changes in the wave. Types of responses include the decrementing response, incrementing response, postactivation exhaustion, and… …   Medical dictionary

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