Post-movement beta (around 20 Hz) synchronization was investigated in 2 experiments with self-paced finger extension and flexion and externally paced wrist movement. The electrodes were fixed over the sensorimotor area in distances of 2.5 cm. It was found that after a brisk finger movement the desynchronized beta rhythm displayed a fast recovery and a short-lasting synchronization within 1 sec. This post-movement beta synchronization was maximal over the contralateral hemisphere and localized slightly more anterior to the maximal desynchronization of the hand area mu rhythm. The post-movement beta synchronization is interpreted as a correlate of "idling" motor cortex neurons.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0013-4694(95)00258-8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unraveling EEG correlates of unimanual finger movements: insights from non-repetitive flexion and extension tasks.
J Neuroeng Rehabil
December 2024
Laboratory for Neuro- & Psychophysiology, Department of Neurosciences, KU Leuven, Leuven, Belgium.
Background: The loss of finger control in individuals with neuromuscular disorders significantly impacts their quality of life. Electroencephalography (EEG)-based brain-computer interfaces that actuate neuroprostheses directly via decoded motor intentions can help restore lost finger mobility. However, the extent to which finger movements exhibit distinct and decodable EEG correlates remains unresolved.
View Article and Find Full Text PDFSynchronized application of closed-loop NMES and precision tACS in post-stroke hand rehabilitation: a protocol of neurorehabilitation trial.
Ther Adv Chronic Dis
November 2024
Department of Rehabilitation Medicine, Keio University School of Medicine, Shinjuku, Tokyo, Japan.
Background: Severe upper extremity paresis due to stroke is a significant clinical sequela. Neuromuscular electrical stimulation (NMES)-based rehabilitation has demonstrated promising results along with cortical plasticity. Transcranial alternating current stimulation (tACS) has gained attention due to its unique ability to entrain endogenous oscillatory brain rhythms with injected AC frequency, offering the potential for modifying brain conditions to enhance rehabilitative interventions.
View Article and Find Full Text PDFPost-Movement Beta Synchrony Inhibits Cortical Excitability.
Brain Sci
September 2024
Brain Research & Imaging Centre, University of Plymouth, Plymouth PL4 8AA, UK.
Background/objectives: This study investigates the relationship between movement-related beta synchrony and primary motor cortex (M1) excitability, focusing on the time-dependent inhibition of movement. Voluntary movement induces beta frequency (13-30 Hz) event-related desynchronisation (B-ERD) in M1, followed by post-movement beta rebound (PMBR). Although PMBR is linked to cortical inhibition, its temporal relationship with motor cortical excitability is unclear.
View Article and Find Full Text PDFA comparative analysis of face and object perception in 2D laboratory and virtual reality settings: insights from induced oscillatory responses.
Exp Brain Res
December 2024
Experimental Psychology I, Institute of Psychology, Osnabrück University, Lise-Meitner-Str. 3, 49076, Osnabrück, Germany.
In psychophysiological research, the use of Virtual Reality (VR) for stimulus presentation allows for the investigation of how perceptual processing adapts to varying degrees of realism. Previous time-domain studies have shown that perceptual processing involves modality-specific neural mechanisms, as evidenced by distinct stimulus-locked components. Analyzing induced oscillations across different frequency bands can provide further insights into neural processes that are not strictly phase-locked to stimulus onset.
View Article and Find Full Text PDFIncreased beta synchronization underlies perception-action hyperbinding in functional movement disorders.
Brain Commun
October 2024
Institute of Systems Motor Science, CBBM, University of Lübeck, 23562 Lübeck, Germany.
Functional movement disorders are amongst the most common and disabling neurological conditions, placing a significant burden on the healthcare system. Despite the frequency and importance of functional movement disorders, our understanding of the underlying pathophysiology is limited, hindering the development of causal treatment options. Traditionally, functional movement disorders were considered as a psychiatric condition, associated with involuntary movements triggered by psychological stressors.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!