Central beta rhythm during sensorimotor activities in man
Abstract
Blocking or desynchronization of the central beta rhythm prior to and parallel to voluntary movement was found in 31 of 33 normal subjects investigated. The beta blocking was short lasting (1-3 sec), very often accompanied by blocking of the mu rhythm and localized in the central region. Phasic beta desynchronization was also observed after somatosensory stimulation. The beta rhythm showed a bilateral symmetrical blocking pattern with unilateral movement or stimulation. Patients with unilateral cerebral ischaemia showed an asymmetric blocking response and therefore demonstrated a high degree of hemispheric independence of the rhythmic generating systems. Central beta desynchronization is, therefore, a normal physiological phenomenon caused by activation processes of the sensorimotor cortex and detectable on the scalp very easily with closely spaced electrodes.
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Amplitudes of alpha, beta and gamma bands provide class-discriminative information for motor tasks.
“It is known that the amplitudes, for example of the alpha, beta and gamma bands, provide class‐discriminative information for motor tasks [Ball et al., 2008; Pfurtscheller, 1981; Pfurtscheller and Aranibar, 1979].”
From Deep learning with convolutional neural networks for EEG decoding and visualization (2017) · cites this paper as Pfurtscheller, 1981
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Pfurtscheller, G., & Aranibar, A. (1979) · Electroencephalography and Clinical Neurophysiology · doi:10.1016/0013-4694(79)90063-4 · Cited by 758 · see citing works
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- Authors
- Pfurtscheller, G.
- Affiliations
- Graz University of Technology (AT)
- Corresponding author
- Pfurtscheller, G
- Venue
- Electroencephalography and Clinical Neurophysiology
- Publisher
- Elsevier BV
- Published
- 1981-03
- Volume
- 51
- Issue
- 3
- Pages
- 253-264
- ISSN
- 0013-4694 (ISSN-L)
- OpenAlex
- W2023222495
- Cited by
- 472
- References
- 1
- Citations by year
- 2026: 11 · 2025: 19 · 2024: 16 · 2023: 11 · 2022: 24 · 2021: 19 · 2020: 25 · 2019: 16 · 2018: 14 · 2017: 22 · 2016: 12 · 2015: 18 · 2014: 20 · 2013: 13 · 2012: 30
- FWCI
- 2.69
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Electroencephalography and Clinical Neurophysiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Keywords
- beta desynchronization, mu rhythm, sensorimotor cortex, voluntary movement, somatosensory stimulation, cortical activation
- MeSH terms
- Beta Rhythm, Brain Ischemia, Cortical Synchronization, Electrodes, Electroencephalography, Hand, Humans, Motor Activity, Scalp, Time Factors, Touch
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