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Updated: May 14, 2026
12:33
Corticospinal Excitability Modulation During Action Observation
Published on: December 31, 2013
Neural Mechanisms of Self-Generated Action Sequences.
Silvia Seghezzi1,2, Patrick Haggard1
1University College London, London WC1 3AZ, United Kingdom s.seghezzi@bbk.ac.uk p.haggard@ucl.ac.uk.
Eneuro
|May 12, 2026
Summary
Executive functions guide problem-solving by initiating self-generated actions. Neural markers for these actions are strongest at sequence onset, linking cognitive planning to motor control during complex tasks.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Motor Control
Background:
- Intelligent problem-solving involves executive cognition to select and execute action paths.
- The neural mechanisms linking problem-solving planning to self-generated action execution are not well understood.
Purpose of the Study:
- To investigate the neural differences between self-generated and stimulus-driven movements during a problem-solving task.
- To explore how executive function interacts with the motor system during goal-directed action sequences.
Main Methods:
- Electroencephalography (EEG) recorded movement-related potentials in 25 participants performing the Tower of London task.
- A control condition involved instructed movements without problem-solving.
- Analysis included readiness potentials (RPs), motor beta-band suppression, and multivariate pattern analysis (MVPA).
Main Results:
- Readiness potentials showed more sustained negativity for self-generated actions, particularly at sequence initiation.
- Motor beta-band suppression was stronger for self-generated actions at sequence onset.
- MVPA reliably distinguished self-generated from stimulus-driven actions throughout preparation.
Conclusions:
- Neural signatures of self-generated action are closely tied to planning demands and sequence initiation.
- Executive cognition plays a crucial role in triggering planned, self-generated actions for problem-solving.
- This research bridges the neuroscience of volition with the psychology of problem-solving.
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