postactivation facilitation

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 after tetanus has occurred. See also postactivation depression and postactivation exhaustion.

Medical dictionary. 2011.

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  • 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… …   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

  • Kohnstamm's phenomenon — First described by German neurologist Oskar Kohnstamm (1871 1917) in 1915, Kohnstamm s phenomenon is a sustained involuntary contraction of a muscle after a prolonged voluntary contraction. The simplest demonstration is to have a subject press… …   Wikipedia

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