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Related Experiment Video

Updated: May 30, 2025

Corticospinal Excitability Modulation During Action Observation

Corticospinal Excitability Modulation During Action Observation

Published on: December 31, 2013

Performance modulations phase-locked to action depend on internal state.

Tommaso Tosato^1,2,3,4, Guillaume Dumas^1,2,3, Gustavo Rohenkohl^4,5,6

¹Research Center of the Sainte-Justine Mother and Child University Hospital Center (CHU Sainte-Justine), Montréal, QC, Canada.

|January 29, 2025

Summary

This summary is machine-generated.

Action-related perceptual modulation is not always detectable. It emerges at approximately 17 Hz during periods of low performance or missed detections, particularly in the beta-frequency range.

Keywords:

Biological sciences Cognitive neuroscience Neuroscience

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Last Updated: May 30, 2025

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Published on: December 31, 2013

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Brain State-dependent Brain Stimulation with Real-time Electroencephalography-Triggered Transcranial Magnetic Stimulation

Brain State-dependent Brain Stimulation with Real-time Electroencephalography-Triggered Transcranial Magnetic Stimulation

Published on: August 20, 2019

Area of Science:

Cognitive Neuroscience
Psychophysics

Background:

Previous research suggests perceptual performance is modulated by frequencies phase-locked to motor actions.
Findings on action-related perceptual modulation have been inconsistent.

Purpose of the Study:

To investigate action-related perceptual modulation at the population level.
To identify conditions under which this modulation becomes detectable.

Main Methods:

Tested 50 participants performing a self-paced button press followed by a detection task.
Utilized fixed- and random-effects analyses to examine aggregated and individual data.
Accounted for internal states such as performance levels and detection outcomes.

Main Results:

Aggregated data showed no significant overall action-related modulation.
Significant modulation at approximately 17 Hz was found during periods of low performance or after missed detections.
Similar modulation was observed in participants with no false alarms.
Random-effects tests confirmed the generalizability of these findings.

Conclusions:

Action-related perceptual modulation is not consistently detectable.
Modulation emerges under specific internal states, including lower attentional engagement or higher decision criteria.
The beta-frequency range (around 17 Hz) is implicated in these context-dependent modulations.