- tonic reflex
- 1. a reflex in which an appreciable period of time passes between muscle contraction and relaxation. 2. a reflex that maintains the reflex contractions that are the basis of posture.
Medical dictionary. 2011.
tonic reflex
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Tonic labyrinthine reflex — The tonic labyrinthine reflex (TLR) is a primitive reflex found in newborn humans. With this reflex, tilting the head back while lying on the back causes the back to stiffen and even arch backwards, causes the legs to straighten, stiffen, and… … Wikipedia
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tonic neck reflex — a reflex in the newborn consisting of extension of the upper limb and sometimes the lower limb on the side to which the head is forcibly turned, with flexion of the contralateral limbs; cf. Magnus and de Kleijn neck r s … Medical dictionary
tonic control — nerve impulses transmitted to the final common pathway through the reflex arc for the maintenance of muscle tone … Medical dictionary
Asymmetrical tonic neck reflex — The asymmetrical tonic neck reflex (ATNR) is a primitive reflex found in newborn humans, but normally vanishes by the child s first birthday. It is also known as the fencing reflex because of the characteristic position of the infant s arms and… … Wikipedia
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Cushing reflex — (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing s Law) is a physiological nervous system response to increased intracranial pressure (ICP) that… … Wikipedia
Vestibulo-ocular reflex — The vestibulo ocular reflex. A rotation of the head is detected, which triggers an inhibitory signal to the extraocular muscles on one side and an excitatory signal to the muscles on the other side. The result is a compensatory movement of the… … Wikipedia
