The supplementary motor region and speech emission.

  title={The supplementary motor region and speech emission.},
  author={Sven Jonas},
  journal={Journal of communication disorders},
  volume={14 5},
  • Sven Jonas
  • Published 1981 in Journal of communication disorders
Speech disorders occur with left supplementary motor region (SMR) lesions. Right SMR lesions probably produce speech disorders only when the right cerebral hemisphere is speech-dominant. Paroxysmal SMR dysfunction produces both uncontrollable vocalization and speech arrest. Slowly evolving SMR lesions produce reduced and labored speech output with word-finding difficulties. Suddenly acquired SMR lesions produce marked speech suppression and aphonia; during recovery nonpropositional "automatic… CONTINUE READING