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Interference in immediate spatial memory

M M Smyth1, K A Scholey

  • 1Department of Psychology, Lancaster University, U.K.

Memory & Cognition
|January 1, 1994
PubMed
Summary
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Spatial memory relies on attention shifts, not motor processes. Tasks demanding spatial attention, like visual or auditory stimuli, disrupt spatial memory recall, suggesting attention is key for maintaining spatial information.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory

Background:

  • Visuospatial immediate memory maintenance theories include implicit motor processes.
  • An alternative theory proposes spatial attention shifts are crucial for visuospatial memory maintenance.

Purpose of the Study:

  • To investigate whether spatial attention shifts, rather than motor processes, underlie visuospatial immediate memory maintenance.
  • To determine the impact of various interfering tasks on spatial and verbal memory recall.

Main Methods:

  • Five experiments were conducted involving spatial and digit span recall tasks.
  • Interfering tasks during recall intervals included visual, auditory, and motor activities, alongside verbal and categorical responses.

Main Results:

Related Experiment Videos

  • Spatial span recall was impaired by visual targets and auditory tones, with further impairment from motor or categorical responses.
  • Verbal tasks interfered with digit span recall, but not spatial span recall, except for reading visually presented words.
  • Interference patterns suggest spatial attention is a shared resource for memory maintenance and task performance.

Conclusions:

  • Active spatial attention is critical for maintaining ordered spatial information in memory.
  • Tasks that compete for spatial attention resources significantly impair spatial memory recall.
  • The findings support an attention-based model for visuospatial immediate memory maintenance.