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Age-related variability in cortical activity during language processing.

Julius Fridriksson1, K Leigh Morrow, Dana Moser

  • 1Department of Communication Sciences and Disorders, University of South Carolina, Columbia, SC 29208, USA. jfridrik@sc.edu

Journal of Speech, Language, and Hearing Research : JSLHR
|August 16, 2006
PubMed
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Older adults show increased brain activity in language areas during picture naming. This study used functional magnetic resonance imaging (fMRI) to explore age-related changes in cortical activation during a simple language task.

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Cortical activity patterns during language processing can change with age.
  • Understanding these changes is crucial for cognitive aging research.
  • Functional magnetic resonance imaging (fMRI) is a key tool for studying brain function.

Purpose of the Study:

  • To investigate the extent of cortical activity during overt picture naming in healthy adults.
  • To examine age-related differences in neural activation patterns during a simple language task.
  • To correlate age with brain activity in specific language-related regions.

Main Methods:

  • Utilized functional magnetic resonance imaging (fMRI) to measure brain activity.
  • Included 20 healthy adult participants aged 20-82 years.

Related Experiment Videos

  • Employed a picture-naming task involving 60 high-frequency nouns.

    • Main Results:

    • A positive relationship was observed between age and cortical activation intensity in Broca's area, Wernicke's area, and the right-hemisphere homologue of Broca's area.
    • Neural activity in the anterior cingulate gyrus, associated with attentional processing, did not show an age-related increase.
    • Findings indicate specific age-related modulation of activation in core language processing regions.

    Conclusions:

    • Suggests age-related increases in cortical activation during simple language tasks like picture naming.
    • Highlights that these increases occur in brain areas typically associated with language processing.
    • Provides insights into the neural mechanisms underlying language in aging adults.