Phase and magnitude spatiotemporal dynamics of β oscillation in electrocorticography (ECoG) in the monkey motor cortex at the onset of 3D reaching movements

Hidenori Watanabe, Kazutaka Takahashi, Yukio Nishimura, Tadashi Isa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

β oscillations in local field potentials, electro-corticography (ECoG), and electroencephalograms (EEG) are ubiquitous in the motor cortex of monkeys and humans. However due to their lack of contributions, compared to other frequency ranges, to decode effector kinematics especially in ECoG signals, spatiotemporal dynamics of ECoG β oscillations has not been examined despite the larger areas that ECoG arrays can cover than standard intracortical multielectrode arrays. Here, we used ECoG grids to cover large areas of motor cortex and some somatosensory cortex in monkeys while they performed an unconstrained reaching and a lever pulling task at two force levels in three dimensional space. We showed that under the pulling task β power increased around movement onset. However, the β phases were locked around the movement onsets and their peak timings were spatially aligned in the motor cortex. These results may indicate that spatiotemporal dynamics of β oscillation conveys task relevant information and that ECoG arrays will be useful to study larger spatiotemporal patterns in the motor cortex, or any cortical areas in general, than intracortical multielectrode arrays.

Original languageEnglish
Title of host publication2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5196-5199
Number of pages4
ISBN (Electronic)9781424479290
DOIs
Publication statusPublished - 2014 Nov 2
Externally publishedYes
Event2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014 - Chicago, United States
Duration: 2014 Aug 262014 Aug 30

Publication series

Name2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014

Other

Other2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014
CountryUnited States
CityChicago
Period14/8/2614/8/30

Keywords

  • Electrocorticography (ECoG)
  • Motor cortex
  • kinetics
  • non-human primates
  • spatiotemporal dynamics
  • β oscillations

ASJC Scopus subject areas

  • Health Informatics
  • Computer Science Applications
  • Biomedical Engineering
  • Medicine(all)

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