Preservation of the masseter reflex in Friedreich's ataxia.

  title={Preservation of the masseter reflex in Friedreich's ataxia.},
  author={Raymond G Auger},
  volume={42 4},
In Friedreich's ataxia, the muscle stretch reflexes are absent or hypoactive in the upper and lower extremities because of pathologic involvement of the dorsal root ganglion cells. Paradoxically, the masseter reflex remains unaffected and may even be hyperactive in some cases. The masseter reflex is hypothesized as unique among stretch reflexes in that its… CONTINUE READING