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Related Concept Videos

Neurulation01:30

Neurulation

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the anterior...

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Non-Invasive Modulation and Robotic Mapping of Motor Cortex in the Developing Brain
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Non-Invasive Modulation and Robotic Mapping of Motor Cortex in the Developing Brain

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Gesture in the developing brain.

Anthony Steven Dick1, Susan Goldin-Meadow, Ana Solodkin

  • 1Department of Psychology, Florida International University, Modesto A. Maidique Campus, Deuxieme Maison 296B, 11200 S. W. 8th Street, Miami, FL 33199, USA. adick@fiu.edu

Developmental Science
|February 24, 2012
PubMed
Summary
This summary is machine-generated.

Children

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Linguistics

Background:

  • Co-speech gestures are integral to human communication, complementing spoken language.
  • Understanding how the brain integrates gesture meaning with speech is crucial for developmental neuroscience.
  • Previous research has implicated specific brain regions in gesture processing, but developmental trajectories remain unclear.

Purpose of the Study:

  • To investigate the neural mechanisms underlying the integration of co-speech gesture meaning with spoken language in children and adults.
  • To identify age-related differences in brain activity related to processing meaningful gestures during auditory storytelling.
  • To explore how the developing brain connects the semantic content of gestures with linguistic information.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed to scan 8- to 11-year-old children and adults.
  • Participants listened to stories accompanied by either meaningful co-speech gestures or meaningless self-adaptor hand movements.
  • Brain activity was analyzed in response to different gesture types across age groups.

Main Results:

  • Both children and adults activated language-associated brain regions (inferior frontal, inferior parietal, posterior temporal) during storytelling with hand movements.
  • Age-related differences in brain activity were observed in regions involved in gesture processing, including the posterior superior temporal sulcus (STSp), inferior frontal gyrus, pars triangularis (IFGTr), and posterior middle temporal gyrus (MTGp).
  • Sensitivity to gesture meaning was found in IFGTr and MTGp for both age groups, though expressed differently. Adults showed modulated interactions between STSp and other regions based on gesture meaning, unlike children.

Conclusions:

  • The developing brain shows distinct patterns of neural activity when integrating co-speech gesture meaning with spoken language compared to adults.
  • Specific brain regions like IFGTr and MTGp are sensitive to gesture meaning early in development, but the integration network matures over time.
  • These findings illuminate the neural underpinnings of how children learn to connect the meaning of gestures with spoken words, highlighting developmental changes in multimodal semantic processing.