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Human motor cortical activity recorded with micro-ECoG electrodes during individual finger movements

Wang, W and Degenhart, AD and Collinger, JL and Vinjamuri, R and Sudre, GP and Adelson, PD and Holder, DL and Leuthardt, EC and Moran, DW and Boninger, ML and Schwartz, AB and Crammond, DJ and Tyler-Kabara, EC and Weber, DJ (2009) Human motor cortical activity recorded with micro-ECoG electrodes during individual finger movements. Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009. 586 - 589.

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Abstract

In this study human motor cortical activity was recorded with a customized micro-ECoG grid during individual finger movements. The quality of the recorded neural signals was characterized in the frequency domain from three different perspectives: (1) coherence between neural signals recorded from different electrodes, (2) modulation of neural signals by finger movement, and (3) accuracy of finger movement decoding. It was found that, for the high frequency band (60-120 Hz), coherence between neighboring micro-ECoG electrodes was 0.3. In addition, the high frequency band showed significant modulation by finger movement both temporally and spatially, and a classification accuracy of 73% (chance level: 20%) was achieved for individual finger movement using neural signals recorded from the micro-ECoG grid. These results suggest that the micro-ECoG grid presented here offers sufficient spatial and temporal resolution for the development of minimally-invasive brain-computer interface applications. ©2009 IEEE.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Wang, W
Degenhart, AD
Collinger, JLcollinger@pitt.eduCOLLINGR
Vinjamuri, R
Sudre, GP
Adelson, PD
Holder, DL
Leuthardt, EC
Moran, DW
Boninger, MLboninger@pitt.eduBONINGER
Schwartz, ABabs21@pitt.eduABS21
Crammond, DJcrammond@pitt.eduCRAMMOND
Tyler-Kabara, ECtylerk@pitt.eduTYLERK
Weber, DJdougweber@pitt.eduDJW500000-0002-9782-3497
Centers: Other Centers, Institutes, Offices, or Units > Human Engineering Research Laboratories
Date: 1 January 2009
Date Type: Publication
Journal or Publication Title: Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
Page Range: 586 - 589
DOI or Unique Handle: 10.1109/iembs.2009.5333704
Schools and Programs: School of Health and Rehabilitation Sciences > Rehabilitation Science and Technology
Refereed: Yes
MeSH Headings: Adolescent; Brain Mapping--instrumentation; Electrodes, Implanted; Electroencephalography--instrumentation; Equipment Design; Equipment Failure Analysis; Evoked Potentials, Motor--physiology; Female; Fingers--physiology; Humans; Microelectrodes; Motor Cortex--physiology; Movement--physiology; Reproducibility of Results; Sensitivity and Specificity
Other ID: NLM NIHMS305229, NLM PMC3142578
PubMed Central ID: PMC3142578
PubMed ID: 19964229
Date Deposited: 18 Oct 2012 19:03
Last Modified: 02 Feb 2019 16:57
URI: http://d-scholarship.pitt.edu/id/eprint/15958

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