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Related Experiment Videos

Age-related changes in antisaccade task performance: inhibitory control or working-memory engagement?

Rena M Eenshuistra1, K Richard Ridderinkhof, Maurits W van der Molen

  • 1Cognitive Psychology Unit, University of Leiden, The Netherlands.

Brain and Cognition
|November 3, 2004
PubMed
Summary

Older adults

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Area of Science:

  • Cognitive Neuroscience
  • Oculomotor Control
  • Aging Research

Background:

  • Older adults exhibit poorer performance in antisaccade tasks compared to younger adults.
  • This decline is often attributed to age-related deficits in inhibitory control and working memory.
  • The interplay between these cognitive functions in aging is not fully understood.

Purpose of the Study:

  • To investigate the specific roles of inhibitory control and working memory in age-related antisaccade task performance.
  • To determine how manipulating inhibitory and working memory demands affects older adults' oculomotor control.

Main Methods:

  • Participants performed antisaccade tasks with manipulated inhibitory demands (fixation-offset) and working memory demands (updating requirements).
  • Oculomotor responses, including saccadic onset latencies and error rates, were recorded and analyzed.

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Main Results:

  • Older adults' inhibitory oculomotor functions were largely preserved across different task conditions.
  • Performance deficits emerged specifically when working memory updating demands were high, indicating a breakdown in cognitive resources.
  • Older adults made more errors and had longer latencies when working memory was taxed.

Conclusions:

  • Age-related declines in antisaccade performance are primarily driven by limitations in working memory capacity, not inhibitory control.
  • Maintaining effective oculomotor control in older adults depends on managing cognitive load, particularly working memory updating.
  • Interventions aimed at enhancing working memory may improve antisaccade performance in older populations.