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The Readiness Potential Correlates with Action-Linked Modulation of Visual Accuracy.

Alessandro Benedetto1,2, Hao Tam Ho3, Maria Concetta Morrone4

  • 1Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, 56123 Pisa, Italy.

Eneuro
|November 9, 2022
PubMed
Summary

Motor preparation, measured by the readiness potential (RP), influences visual perception accuracy during action execution. This study links RP amplitude to visual modulation, suggesting a shared neural mechanism for motor control and perception.

Keywords:
EEGERPaction and perceptionefference copymotor-induced visual modulationreadiness potential

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Perception

Background:

  • Visual perception is modulated by action execution.
  • The neural basis of this motor-induced visual modulation remains unclear.
  • The readiness potential (RP) is an electroencephalogram (EEG) signal linked to motor preparation.

Purpose of the Study:

  • To investigate the neural underpinnings of motor-induced visual modulation.
  • To determine if the readiness potential (RP) is associated with changes in visual perception near action execution.
  • To explore the relationship between RP amplitude and visuomotor interaction.

Main Methods:

  • Electroencephalography (EEG) was used to record brain activity in 18 participants.
  • Participants performed a visuomotor task involving a voluntary button press and visual discrimination.
  • The amplitude of the readiness potential (RP) was measured during both visuomotor and purely motor tasks.

Main Results:

  • A significant correlation was found between the magnitude of visual modulation and the readiness potential (RP) amplitude.
  • RP amplitude in a motor task also correlated with the degree of motor-induced visual modulation.
  • These findings indicate a link between motor preparation processes and perceptual changes.

Conclusions:

  • Perceptual changes near action execution are associated with motor preparation processes.
  • The readiness potential (RP) appears to be a key neural marker for this visuomotor interaction.
  • The observed mechanism is independent of specific task contingencies, suggesting a fundamental link between motor preparation and perception.