Dorsal Anterior Cingulate Cortex Coordinates Contextual Mental Imagery for Single-Beat Manipulation during Rhythmic
Maho Uemura1,2, Yoshitada Katagiri3, Emiko Imai4
1Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan.
Brain Sciences
|August 29, 2024
Summary
The dorsal anterior cingulate cortex (dACC) regulates rhythmic synchronization using mental imagery. This brain region coordinates motor control for voluntary rhythmic behaviors, enhancing sensorimotor synchronization.
Area of Science:
- Neuroscience
- Cognitive Science
- Motor Control
Background:
- Flexible pulse-by-pulse regulation of sensorimotor synchronization is vital for voluntary rhythmic behaviors.
- Neurophysiological mechanisms underlying this regulation, particularly the role of the dorsal anterior cingulate cortex (dACC), are not fully understood.
Purpose of the Study:
- To investigate the role of the dACC in coordinating proactive and reactive motor outcomes through contextual mental imagery.
- To elucidate the neurophysiological mechanisms of voluntary sensorimotor synchronization.
Main Methods:
- A missing-oddball finger-tapping task was employed with 33 healthy young volunteers.
- Event-related deep-brain activity (ER-DBA) and event-related potential (ERP) analyses were conducted.
- Behavioral data were analyzed using signal detection theory.
Main Results:
- dACC activation/deactivation correlated with motor control strategy selection based on mental imagery.
- Reverse ERP traces confirmed contextual mental imagery, updated by perceptual evidence and abductive reasoning.
- Stable synchronization was achieved through proactive control and mental imagery of syncopated rhythms; accuracy decreased with errors.
Conclusions:
- The dACC plays a key role in voluntarily regulating sensorimotor synchronization.
- Contextual mental imagery, informed by experience, is a crucial mechanism utilized by the dACC.
- The dACC can generate novel rhythms by creating mental imagery of complex rhythmic patterns.
Keywords:
deep-brain activitydorsal anterior cingulate cortexmental imageryrhythmsensorimotor synchronizationMore Related Videos
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