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Corticospinal Excitability Modulation During Action Observation
Published on: December 31, 2013
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Predictability alters information flow during action observation in human electrocorticographic activity.
Chaoyi Qin1, Frederic Michon1, Yoshiyuki Onuki2
1Social Brain Lab, Netherlands Institute for Neuroscience, Royal Netherlands Academy of Art and Sciences, 1105 BA Amsterdam, the Netherlands.
Cell Reports
|November 14, 2023
Summary
Observing predictable actions in sequences alters brain activity within the action observation network (AON). Expectations from action sequences modulate information flow, impacting how we process others' actions.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Motor Control
Background:
- The action observation network (AON) is crucial for understanding observed actions.
- Previous research focused on isolated motor acts, leaving sequence processing unclear.
Purpose of the Study:
- To investigate how embedding actions in meaningful sequences affects AON activity.
- To explore the role of predictability in modulating information exchange within the AON.
Main Methods:
- Intracranial electrocorticography (ECoG) was used in human participants.
- Examined information exchange between precentral, supramarginal, and visual cortices.
- Compared brain activity during predictable sequences versus randomized actions.
Main Results:
- Increased top-down beta oscillations from precentral to supramarginal cortex observed for predictable actions.
- Expectations from action sequences suppressed bottom-up visual responses (high-gamma) in visual areas.
- Evidence supports predictive coding mechanisms in action perception.
Conclusions:
- Action sequences and predictability significantly alter AON function.
- The brain uses expectations to refine action processing, aligning with predictive coding principles.
- Findings elucidate information integration within the AON for social cognition.
