Corticospinal suppression in response to pics with implied hand actions: A follow up TMS study

IF 2.2 3区心理学 Q3 NEUROSCIENCES

Brain and Cognition Pub Date : 2025-04-12 DOI:10.1016/j.bandc.2025.106298

Riccardo Dalla Volta , Francesco Scarfone , Dario Brambilla , Roberto Esposti , Paolo Cavallari

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引用次数: 0

Abstract

Presentation of bodily actions is known to affect motor system activity in perceivers’ brain. A previous study (Gianelli, Kuehne, Lo Presti, Mencaraglia & Dalla Volta, 2020) employing hand-tool interaction with apparent motion showed early suppression of corticospinal excitability in hand muscles. To control for the role of apparent motion and to investigate the suppression duration, in the present follow up study participants observed pics displaying hand-tool actions, with no apparent motion but only implied motion. Single pulse TMS was delivered on the hand sector of the left motor cortex at 1 s after fixation cross (baseline), at 150, 350, 500 and 700 ms from stimulus onset, while motor evoked potentials (MEPs) were recorded from the contralateral first dorsal interosseus muscle. Results showed a difference in MEP amplitude between hand action-related and control pics where hand action observation suppressed corticospinal excitability, suggesting early and enduring motor inhibition. In addition, MEP amplitude decreased over time. These findings rule out a necessary role of apparent motion, indicating that the simple presentation of hand actions with implied motion effectively induced motor inhibition. Corticospinal suppression may act to prevent the motor system from automatically transforming observed actions into overt movements whenever an action is observed.

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来源期刊

Brain and Cognition 医学-神经科学

CiteScore

4.60

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Brain and Cognition is a forum for the integration of the neurosciences and cognitive sciences. B&C publishes peer-reviewed research articles, theoretical papers, case histories that address important theoretical issues, and historical articles into the interaction between cognitive function and brain processes. The focus is on rigorous studies of an empirical or theoretical nature and which make an original contribution to our knowledge about the involvement of the nervous system in cognition. Coverage includes, but is not limited to memory, learning, emotion, perception, movement, music or praxis in relationship to brain structure or function. Published articles will typically address issues relating some aspect of cognitive function to its neurological substrates with clear theoretical import, formulating new hypotheses or refuting previously established hypotheses. Clinical papers are welcome if they raise issues of theoretical importance or concern and shed light on the interaction between brain function and cognitive function. We welcome review articles that clearly contribute a new perspective or integration, beyond summarizing the literature in the field; authors of review articles should make explicit where the contribution lies. We also welcome proposals for special issues on aspects of the relation between cognition and the structure and function of the nervous system. Such proposals can be made directly to the Editor-in-Chief from individuals interested in being guest editors for such collections.