Area Spt in the human planum temporale supports sensory-motor integration for speech processing

J Neurophysiol. 2009 May;101(5):2725-32. doi: 10.1152/jn.91099.2008. Epub 2009 Feb 18.

Abstract

Processing incoming sensory information and transforming this input into appropriate motor responses is a critical and ongoing aspect of our moment-to-moment interaction with the environment. While the neural mechanisms in the posterior parietal cortex (PPC) that support the transformation of sensory inputs into simple eye or limb movements has received a great deal of empirical attention-in part because these processes are easy to study in nonhuman primates-little work has been done on sensory-motor transformations in the domain of speech. Here we used functional magnetic resonance imaging and multivariate analysis techniques to demonstrate that a region of the planum temporale (Spt) shows distinct spatial activation patterns during sensory and motor aspects of a speech task. This result suggests that just as the PPC supports sensorimotor integration for eye and limb movements, area Spt forms part of a sensory-motor integration circuit for the vocal tract.

MeSH terms

  • Acoustic Stimulation / methods
  • Adolescent
  • Adult
  • Auditory Perception / physiology*
  • Brain Mapping*
  • Female
  • Hearing / physiology
  • Humans
  • Imaging, Three-Dimensional / methods
  • Magnetic Resonance Imaging / methods
  • Male
  • Multivariate Analysis
  • Oxygen / blood
  • Reaction Time / physiology
  • Speech*
  • Temporal Lobe / blood supply
  • Temporal Lobe / physiology*
  • Young Adult

Substances

  • Oxygen