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Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
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Grasping preparation enhances orientation change detection.

Tjerk P Gutteling1, J Leon Kenemans, Sebastiaan F W Neggers

  • 1Department of Psychiatry, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands. T.Gutteling@umcutrecht.nl

Plos One
|March 17, 2011
PubMed
Summary
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Motor planning enhances visual perception for relevant features. Grasping actions improved orientation sensitivity, unlike pointing, demonstrating action-specific perceptual modulation for effective movement preparation.

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Motor Control

Background:

  • Goal-directed movements require environmental analysis, with object properties like orientation being crucial for grasping.
  • Previous research suggested indirect evidence for action-induced visual perception improvements, but direct proof was lacking.

Purpose of the Study:

  • To provide direct evidence for feature-specific perceptual modulation during the planning phase of a grasping action.
  • To investigate if the motor system can influence early visual perception to meet action control needs.

Main Methods:

  • Human subjects performed an orientation discrimination task while preparing to either grasp or point to a bar.
  • A control experiment assessed sensitivity to bar luminance changes, a non-action-relevant feature.

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Related Experiment Videos

Last Updated: Jun 3, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
10:51

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans

Published on: January 15, 2018

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
09:41

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Published on: April 21, 2023

Main Results:

  • Perceptual sensitivity to orientation changes significantly increased when subjects prepared to grasp compared to pointing.
  • No significant difference in visual sensitivity was observed for luminance changes between grasping and pointing conditions.

Conclusions:

  • This study provides the first direct evidence for enhanced perceptual sensitivity to action-relevant visual features during movement preparation.
  • Action-induced perception improvements are likely mediated by feedback mechanisms from motor planning areas to the visual cortex.