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Visual working memory load does not eliminate visuomotor repetition effects.

Jason Rajsic1, Matthew D Hilchey2, Geoffrey F Woodman3

  • 1Department of Psychology, Vanderbilt University, PMB 407817, 2301 Vanderbilt Place, Nashville, TN, 37240-7817, USA. jason.rajsic@vanderbilt.edu.

Attention, Perception & Psychophysics
|August 16, 2019
PubMed
Summary

Visuomotor repetition effects, which speed up responses to stimuli, are not dependent on visual working memory. This suggests that these effects arise from automatic long-term memory retrieval, not active working memory storage.

Keywords:
Memory: visual working and short-term memoryRepetition effectsVisual working memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Visuomotor responses are influenced by previous stimulus-response pairings, a phenomenon known as visuomotor repetition effects.
  • The underlying memory representations for these effects are not fully understood, with a debate on the role of visual working memory.

Purpose of the Study:

  • To investigate whether visual working memory (VWM) stores stimulus information responsible for visuomotor repetition effects.
  • To test the hypothesis that manipulating VWM load selectively disrupts specific repetition effects.

Main Methods:

  • Participants performed color discrimination tasks under different VWM load conditions (color vs. spatial).
  • Two experiments were conducted to assess the impact of VWM load on color-response and location-response repetition effects.

Main Results:

  • Neither color nor spatial VWM load significantly eliminated visuomotor repetition effects.
  • The findings indicate that VWM load does not disrupt the mechanisms underlying these repetition effects.

Conclusions:

  • Visual working memory is unlikely to be the primary storage for information driving visuomotor repetition effects.
  • Results support the role of automatic long-term memory retrieval or separate memory buffers in visuomotor processing.