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Related Experiment Video

Updated: Jun 29, 2026

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation
06:56

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation

Published on: December 18, 2015

Perceptual systems controlling speech production.

Novraj S Dhanjal1, Lahiru Handunnetthi, Maneesh C Patel

  • 1Division of Neuroscience and Mental Health and Medical Research Council Clinical Sciences Centre, Imperial College London, London W12 0NN, United Kingdom. novraj.dhanjal@imperial.ac.uk

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|October 3, 2008
PubMed
Summary
This summary is machine-generated.

Fluent speech relies on integrating motor commands with auditory and somatosensory feedback. This fMRI study reveals speech integration occurs in the supratemporal planes (STPs), challenging traditional models of speech processing.

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Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation
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Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation

Published on: June 14, 2014

Related Experiment Videos

Last Updated: Jun 29, 2026

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation
06:56

Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation

Published on: December 18, 2015

Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation
12:09

Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation

Published on: June 14, 2014

Area of Science:

  • Neuroscience
  • Speech Science
  • Cognitive Science

Background:

  • Fluent speech acquisition and maintenance depend on integrating motor feedforward and polysensory feedback.
  • Understanding the neural basis of this integration is crucial for speech production research.

Purpose of the Study:

  • To investigate neural activity and integration within motor and sensory pathways during speech production.
  • To identify specific brain regions involved in the temporal integration of speech-related signals.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used on 21 healthy participants.
  • Four motor conditions were tested: propositional speech, nonpropositional speech, and silent jaw/tongue movements.
  • Scanning techniques were adapted to minimize artifacts from overt speech.

Main Results:

  • Multimodal convergence of auditory and somatosensory feedback occurred in the supratemporal planes (STPs).
  • Somatosensory association cortex (SII) showed suppressed activity during speech, unlike during silent articulatory movements.
  • Distinct regions were identified for auditory feedback processing and language retrieval.

Conclusions:

  • The supratemporal planes (STPs) play a key role in polysensory integration for speech production.
  • Findings challenge hierarchical models, suggesting novel roles for STPs and modulation of SII activity.
  • These insights have implications for understanding speech fluency acquisition and maintenance.