GO-STOP control using optical brain-computer interface during calculation task

Kei Utsugi; Akiko Obata; Hiroki Sato; Ryuta Aoki; Atsushi Maki; Hideaki Koizumi; Kazuhiko Sagara; Hiroaki Kawamichi; Hirokazu Atsumori; Takusige Katura

doi:10.1093/ietcom/e91-b.7.2133

GO-STOP control using optical brain-computer interface during calculation task

Kei Utsugi, Akiko Obata, Hiroki Sato, Ryuta Aoki, Atsushi Maki, Hideaki Koizumi, Kazuhiko Sagara, Hiroaki Kawamichi, Hirokazu Atsumori, Takusige Katura

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We have developed a prototype optical brain-computer interface (BCI) system that can be used by an operator to manipulate external, electrically controlled equipment. Our optical BCI uses near-infrared spectroscopy and functions as a compact, practical, unrestrictive, non-invasive brain-switch. The optical BCI system measured spatiotemporal changes in the hemoglobin concentrations in the blood flow of a subject's prefrontal cortex at 22 measurement points. An exponential moving average (EMA) filter was applied to the data, and then their weighted sum with a taskrelated parameter derived from a pretest is utilized for time-indicated control (GO-STOP) of an external object. In experiments using untrained subjects, the system achieved control patterns within an accuracy of ± 6 sec for more than 80% control.

Original language	English
Pages (from-to)	2133-2141
Number of pages	9
Journal	IEICE Transactions on Communications
Volume	E91-B
Issue number	7
DOIs	https://doi.org/10.1093/ietcom/e91-b.7.2133
Publication status	Published - 2008
Externally published	Yes

Keywords

Brain switch
Brain-computer interface
NIRS
Optical topography
Prefrontal cortex

ASJC Scopus subject areas

Software
Computer Networks and Communications
Electrical and Electronic Engineering

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10.1093/ietcom/e91-b.7.2133

Cite this

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abstract = "We have developed a prototype optical brain-computer interface (BCI) system that can be used by an operator to manipulate external, electrically controlled equipment. Our optical BCI uses near-infrared spectroscopy and functions as a compact, practical, unrestrictive, non-invasive brain-switch. The optical BCI system measured spatiotemporal changes in the hemoglobin concentrations in the blood flow of a subject's prefrontal cortex at 22 measurement points. An exponential moving average (EMA) filter was applied to the data, and then their weighted sum with a taskrelated parameter derived from a pretest is utilized for time-indicated control (GO-STOP) of an external object. In experiments using untrained subjects, the system achieved control patterns within an accuracy of ± 6 sec for more than 80% control.",

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AU - Obata, Akiko

AU - Sato, Hiroki

AU - Aoki, Ryuta

AU - Maki, Atsushi

AU - Koizumi, Hideaki

AU - Sagara, Kazuhiko

AU - Kawamichi, Hiroaki

AU - Atsumori, Hirokazu

AU - Katura, Takusige

PY - 2008

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GO-STOP control using optical brain-computer interface during calculation task

Abstract

Keywords

ASJC Scopus subject areas

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