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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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Perception-action coupling during discriminative interceptive actions.

Yu Sun1, Dukchan Jang2, Sangbum Park2

  • 1Department of Physical Education, Yancheng Teachers University, Yancheng, China.

Frontiers in Psychology
|May 15, 2025
PubMed
Summary
This summary is machine-generated.

Adding decision-making to interception tasks increases timing errors and delays perception-action coupling. Spatial accuracy of eye and hand movements remains unaffected by response requirements.

Keywords:
discriminative taskeye-hand coordinationinterceptive actionperception-action couplingspatiotemporal accuracy

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Area of Science:

  • Cognitive Psychology
  • Motor Control
  • Human Factors

Background:

  • Interceptive actions require integrating perception and action under strict temporal constraints.
  • Decision-making processes in response selection can increase cognitive load, potentially affecting perception-action coupling.

Purpose of the Study:

  • To investigate how discriminative response requirements impact eye and hand movements during interception.
  • To examine the effects on perception-action coupling and response accuracy.
  • To understand the influence of cognitive load from decision-making on motor performance.

Main Methods:

  • Participants performed interceptive actions with stimuli at varying velocities.
  • Two conditions were used: non-discriminative (respond to all stimuli) and discriminative (respond to stimuli targeting a specific area).
  • Eye and hand movements, along with timing and spatial accuracy, were recorded and analyzed.

Main Results:

  • Timing errors were significantly greater in the discriminative condition and increased with stimulus velocity.
  • Reaction times were longer, saccadic frequency higher, gaze duration shorter, and temporal gaze-stimulus coupling longer in the discriminative condition.
  • Spatial accuracy (radial error, gaze error, gaze-hand coupling) was not affected by the response conditions.

Conclusions:

  • Decision-making in interceptive tasks impairs temporal accuracy by delaying perception-action coupling.
  • The cognitive load associated with discriminative responses primarily affects the temporal aspects of movement.
  • Spatial perception-action coupling remains robust despite increased decision-making demands.