Area Spt in the human planum temporale supports sensory-motor integration for speech processing.
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.
Hickok
Gregory
G
Center for Cognitive Neuroscience, Department of Cognitive Sciences, University of California, Irvine, CA 92697, USA. greg.hickok@uci.edu
Okada
Kayoko
K
Serences
John T
JT
D000161:Acoustic Stimulation / Q000379:methods; D000293:Adolescent; D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D001931:Brain Mapping; D005260:Female; D006309:Hearing / Q000502:physiology; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D015999:Multivariate Analysis; D010100:Oxygen / Q000097:blood; D011930:Reaction Time / Q000502:physiology; D013060:Speech; D013702:Temporal Lobe / Q000098:blood supply / Q000502:physiology*; D055815:Young Adult
D010100:Oxygen