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Related Experiment Video

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Does hand position affect orienting when no action is required? An electrophysiological study.

Catherine L Reed1, John P Garza2, William S Bush3

  • 1Department of Psychological Science, Claremont McKenna College, Claremont, CA, United States.

Frontiers in Neuroscience
|January 23, 2023
PubMed
Summary
This summary is machine-generated.

The hand

Keywords:
attentionembodied attentionencephalography (EEG)event-related potential (ERP)hapticorienting

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Area of Science:

  • Cognitive Neuroscience
  • Neuroscience
  • Psychology

Background:

  • Previous studies indicate attention biases towards targets near the hand for action.
  • It remains unclear if attention is drawn to non-targets near the hand without response requirements.

Purpose of the Study:

  • This study investigated if hand position influences visual orienting to non-targets.
  • We examined the role of attention distribution in this effect using electroencephalography/event-related potentials (EEG/ERP).

Main Methods:

  • Participants performed a modified attention task with rapid visual stimuli.
  • Stimuli were presented bilaterally; participants responded to infrequent targets.
  • A hand or block was placed near one stimulus location, and attention was manipulated (distributed vs. focused).

Main Results:

  • When attention was distributed, the hand non-specifically increased N1 amplitudes compared to a block.
  • However, this effect was not selective to stimuli near the hand.
  • When attention was focused, neither hand nor block location affected ERP amplitudes.

Conclusions:

  • Hand position provides a non-location-specific input during visual orienting when attention is distributed.
  • Attentional focus overrides any potential influence of hand proximity on non-target processing.