Evaluation of various mental task combinations for near-infrared spectroscopy-based brain-computer interfaces
- Authors
- Hwang, Han-Jeong; Lim, Jeong-Hwan; Kim, Do-Won; Im, Chang-Hwan
- Issue Date
- Jul-2014
- Publisher
- SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
- Keywords
- mental task classification; brain-computer interface; near-infrared spectroscopy; binary communication; locked-in syndrome
- Citation
- JOURNAL OF BIOMEDICAL OPTICS, v.19, no.7, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF BIOMEDICAL OPTICS
- Volume
- 19
- Number
- 7
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/25832
- DOI
- 10.1117/1.JBO.19.7.077005
- ISSN
- 1083-3668
- Abstract
- A number of recent studies have demonstrated that near-infrared spectroscopy (NIRS) is a promising neuroimaging modality for brain-computer interfaces (BCIs). So far, most NIRS-based BCI studies have focused on enhancing the accuracy of the classification of different mental tasks. In the present study, we evaluated the performances of a variety of mental task combinations in order to determine the mental task pairs that are best suited for customized NIRS-based BCIs. To this end, we recorded event-related hemodynamic responses while seven participants performed eight different mental tasks. Classification accuracies were then estimated for all possible pairs of the eight mental tasks (C-8(2) = 28). Based on this analysis, mental task combinations with relatively high classification accuracies frequently included the following three mental tasks: "mental multiplication," "mental rotation," and "right-hand motor imagery." Specifically, mental task combinations consisting of two of these three mental tasks showed the highest mean classification accuracies. It is expected that our results will be a useful reference to reduce the time needed for preliminary tests when discovering individual-specific mental task combinations. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
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