Tendon Reflex


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Related to Tendon Reflex: Achilles tendon reflex, Patellar Tendon Reflex

Tendon Reflex

 

the contraction of a muscle or group of muscles in response to stimulation of the proprioceptors of the tendon of one of these muscles. The stimulation excites the muscle spindles, which transmit the excitation through quick-conducting nerve fibers to the motoneurons that innervate the given muscle. The reflex arc of a tendon reflex ends within a single segment of the spinal cord, and any excitation of the spinal cord affects the magnitude of the reflex. Consequently, disturbances of the central nervous system are reflected in changes in some tendon reflexes. An example is the patellar reflex—the extension of the leg at the knee when the patellar tendon is tapped.

References in periodicals archive ?
In our present investigation, myotatic patella tendon reflex was recorded before and after the intervention to investigate the effect of WBV on the stretch reflex.
Because the reflex torque is induced by the tendon tapping force and varied with the tapping force, treating them as output and input of the tendon reflex system, respectively, is appropriate [10].
We used several physiologically meaningful parameters to characterize the impulse response of the tendon reflex system (Figure 2).
Compared with the nondisabled controls, the spastic elbow showed a much stronger tendon reflex impulse response with much higher amplitude and quicker increased amplitude, indicating stronger and quicker reflex responses associated with hyperactive reflexes.
2010a) reported that after five minutes of continuous acute indirect vibration (f = 26 Hz, A = 6 mm, SV) there was minimal change in patellar tendon reflex properties, but muscle twitch characteristics were potentiated indicating that a greater myogenic response was present compared to a neural-mediated effect of a reflex potentiation.
1971) The achilles tendon reflex and the h-response during and after tendon vibration.
In my experience, a delayed Achilles tendon reflex (ATR) return is the most reliable physical sign of hypothyroidism, and other investigators have made the same observation.