Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG

Tianxiao Jiang; Nuri F. Ince; Tao Jiang; Taylor Wang; Shenshen Mei; Yunlin Li; Xiaofei Wang; Sujit Prabhu; Zhiyi Sha

doi:10.1109/NER.2015.7146691

Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG

Tianxiao Jiang, Nuri F. Ince, Tao Jiang, Taylor Wang, Shenshen Mei, Yunlin Li, Xiaofei Wang, Sujit Prabhu, Zhiyi Sha

Neurology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

High density electrocorticogram (ECoG) of motor cortex was recorded during awake surgeries of two subjects with respectively epilepsy and brain tumor. Subjects were asked to execute spontaneous hand movements: extension and flexion during the experiments. We investigated the ECoG in time frequency plane during these hand movements and computed event-related desynchronization (ERD) and event-related synchronization (ERS) levels of beta (8-32 Hz) and gamma frequency bands. The distribution of ERD and ERS over channels provided an idea about the spatial distribution of the cortical activity within each task. In both subjects, consistently, the scale of power changes in beta and gamma band was larger in hand flexion compared to hand extension. In addition, the spatial distribution of ERD in beta and ERS in gamma band during flexion was larger than extension but highly overlapped between these tasks. Gamma band was more spatially localized than beta band activity and cortical patterns were more distinct between the tasks. Our preliminary results indicate that the high density ECoG can be effectively used in awake surgery for functional mapping.

Original language	English (US)
Title of host publication	2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015
Publisher	IEEE Computer Society
Pages	589-592
Number of pages	4
ISBN (Electronic)	9781467363891
DOIs	https://doi.org/10.1109/NER.2015.7146691
State	Published - Jul 1 2015
Event	7th International IEEE/EMBS Conference on Neural Engineering, NER 2015 - Montpellier, France Duration: Apr 22 2015 → Apr 24 2015

Publication series

Name	International IEEE/EMBS Conference on Neural Engineering, NER
Volume	2015-July
ISSN (Print)	1948-3546
ISSN (Electronic)	1948-3554

Other

Other	7th International IEEE/EMBS Conference on Neural Engineering, NER 2015
Country/Territory	France
City	Montpellier
Period	4/22/15 → 4/24/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

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10.1109/NER.2015.7146691

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Jiang, T., Ince, N. F., Jiang, T., Wang, T., Mei, S., Li, Y., Wang, X., Prabhu, S., & Sha, Z. (2015). Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG. In 2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015 (pp. 589-592). Article 7146691 (International IEEE/EMBS Conference on Neural Engineering, NER; Vol. 2015-July). IEEE Computer Society. https://doi.org/10.1109/NER.2015.7146691

Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG. / Jiang, Tianxiao; Ince, Nuri F.; Jiang, Tao et al.
2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015. IEEE Computer Society, 2015. p. 589-592 7146691 (International IEEE/EMBS Conference on Neural Engineering, NER; Vol. 2015-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jiang, T, Ince, NF, Jiang, T, Wang, T, Mei, S, Li, Y, Wang, X, Prabhu, S & Sha, Z 2015, Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG. in 2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015., 7146691, International IEEE/EMBS Conference on Neural Engineering, NER, vol. 2015-July, IEEE Computer Society, pp. 589-592, 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015, Montpellier, France, 4/22/15. https://doi.org/10.1109/NER.2015.7146691

Jiang T, Ince NF, Jiang T, Wang T, Mei S, Li Y et al. Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG. In 2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015. IEEE Computer Society. 2015. p. 589-592. 7146691. (International IEEE/EMBS Conference on Neural Engineering, NER). doi: 10.1109/NER.2015.7146691

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abstract = "High density electrocorticogram (ECoG) of motor cortex was recorded during awake surgeries of two subjects with respectively epilepsy and brain tumor. Subjects were asked to execute spontaneous hand movements: extension and flexion during the experiments. We investigated the ECoG in time frequency plane during these hand movements and computed event-related desynchronization (ERD) and event-related synchronization (ERS) levels of beta (8-32 Hz) and gamma frequency bands. The distribution of ERD and ERS over channels provided an idea about the spatial distribution of the cortical activity within each task. In both subjects, consistently, the scale of power changes in beta and gamma band was larger in hand flexion compared to hand extension. In addition, the spatial distribution of ERD in beta and ERS in gamma band during flexion was larger than extension but highly overlapped between these tasks. Gamma band was more spatially localized than beta band activity and cortical patterns were more distinct between the tasks. Our preliminary results indicate that the high density ECoG can be effectively used in awake surgery for functional mapping.",

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Investigation of the spatial and spectral patterns of hand extension/flexion using high-density ECoG

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