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Goal-Directed Action Planning Modulates Surround Suppression in the Visual System.

Yihui Zhang1,2,3, Jie Gao1,2,3, Zhiqing Deng1

  • 1Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, Guangdong Province 510631, China.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
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Summary

Action planning enhances visual processing to help grasp targets in cluttered scenes. This visual tuning is specific to the action and hand used, improving object segregation for precise movements.

Keywords:
EEGSSVEPaction planninggraspmotorperceptionsurround suppression

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Visual Perception

Background:

  • Action planning traditionally focuses on motor commands, but also influences sensory systems.
  • Previous research on action planning's sensory modulation primarily examined single objects.
  • The impact of action planning on spatial interactions in cluttered visual scenes is not well understood.

Purpose of the Study:

  • To investigate how action planning modulates visual surround suppression in cluttered scenes.
  • To determine if grasp planning enhances object segregation for target selection.
  • To explore the role of hand dominance in action-specific sensory modulation during planning.

Main Methods:

  • Used electroencephalography (EEG) with frequency tagging to measure visual surround suppression.
  • Participants planned to grasp a target among flankers or perform control tasks.
  • Compared EEG responses during grasp planning versus planning a non-target-directed action or perceptual judgment.

Main Results:

  • Planning a grasp significantly amplified visual surround suppression compared to planning a key release.
  • This enhancement was greater for dominant hand grasps and when the target was relevant.
  • A control task involving perceptual judgment did not elicit enhanced surround suppression, confirming action specificity.

Conclusions:

  • Action preparation actively and selectively refines early visual processing for efficient goal-directed actions.
  • Grasp planning enhances visual mechanisms like edge detection and figure-ground segregation.
  • These findings provide neural evidence for top-down modulation of sensory systems during action planning.