A Communication Means for Totally Locked-in ALS Patients Based on Changes in Cerebral Blood Volume Measured with Near-Infrared Light
Summary :
A communication means is presented for patients with amyotrophic lateral sclerosis in totally locked-in state who are completely unable to move any part of the body and have no usual communication means. The method utilizes changes in cerebral blood volume accompanied with changes in brain activity. When a patient is asked a question and the answer to it is 'yes', the patient makes his or her brain active. The change in blood volume at the frontal lobe is detected with near-infrared light. The instantaneous amplitude and phase of the change are calculated, and the maximum amplitude and phase change are obtained. The answer 'yes' or 'no' of the patient is detected using a discriminant analysis with these two quantities as variables. The rate of correct detection is 80% on average.
- Publication
- IEICE TRANSACTIONS on Information Vol.E90-D No.7 pp.1028-1037
- Publication Date
- 2007/07/01
- Publicized
- Online ISSN
- 1745-1361
- DOI
- 10.1093/ietisy/e90-d.7.1028
- Type of Manuscript
- PAPER
- Category
- Rehabilitation Engineering and Assistive Technology
Authors
Keyword
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Masayoshi NAITO, Yohko MICHIOKA, Kuniaki OZAWA, Yoshitoshi ITO, Masashi KIGUCHI, Tsuneo KANAZAWA, "A Communication Means for Totally Locked-in ALS Patients Based on Changes in Cerebral Blood Volume Measured with Near-Infrared Light" in IEICE TRANSACTIONS on Information,
vol. E90-D, no. 7, pp. 1028-1037, July 2007, doi: 10.1093/ietisy/e90-d.7.1028.
Abstract: A communication means is presented for patients with amyotrophic lateral sclerosis in totally locked-in state who are completely unable to move any part of the body and have no usual communication means. The method utilizes changes in cerebral blood volume accompanied with changes in brain activity. When a patient is asked a question and the answer to it is 'yes', the patient makes his or her brain active. The change in blood volume at the frontal lobe is detected with near-infrared light. The instantaneous amplitude and phase of the change are calculated, and the maximum amplitude and phase change are obtained. The answer 'yes' or 'no' of the patient is detected using a discriminant analysis with these two quantities as variables. The rate of correct detection is 80% on average.
URL: https://global.ieice.org/en_transactions/information/10.1093/ietisy/e90-d.7.1028/_p
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@ARTICLE{e90-d_7_1028,
author={Masayoshi NAITO, Yohko MICHIOKA, Kuniaki OZAWA, Yoshitoshi ITO, Masashi KIGUCHI, Tsuneo KANAZAWA, },
journal={IEICE TRANSACTIONS on Information},
title={A Communication Means for Totally Locked-in ALS Patients Based on Changes in Cerebral Blood Volume Measured with Near-Infrared Light},
year={2007},
volume={E90-D},
number={7},
pages={1028-1037},
abstract={A communication means is presented for patients with amyotrophic lateral sclerosis in totally locked-in state who are completely unable to move any part of the body and have no usual communication means. The method utilizes changes in cerebral blood volume accompanied with changes in brain activity. When a patient is asked a question and the answer to it is 'yes', the patient makes his or her brain active. The change in blood volume at the frontal lobe is detected with near-infrared light. The instantaneous amplitude and phase of the change are calculated, and the maximum amplitude and phase change are obtained. The answer 'yes' or 'no' of the patient is detected using a discriminant analysis with these two quantities as variables. The rate of correct detection is 80% on average.},
keywords={},
doi={10.1093/ietisy/e90-d.7.1028},
ISSN={1745-1361},
month={July},}
Copy
TY - JOUR
TI - A Communication Means for Totally Locked-in ALS Patients Based on Changes in Cerebral Blood Volume Measured with Near-Infrared Light
T2 - IEICE TRANSACTIONS on Information
SP - 1028
EP - 1037
AU - Masayoshi NAITO
AU - Yohko MICHIOKA
AU - Kuniaki OZAWA
AU - Yoshitoshi ITO
AU - Masashi KIGUCHI
AU - Tsuneo KANAZAWA
PY - 2007
DO - 10.1093/ietisy/e90-d.7.1028
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E90-D
IS - 7
JA - IEICE TRANSACTIONS on Information
Y1 - July 2007
AB - A communication means is presented for patients with amyotrophic lateral sclerosis in totally locked-in state who are completely unable to move any part of the body and have no usual communication means. The method utilizes changes in cerebral blood volume accompanied with changes in brain activity. When a patient is asked a question and the answer to it is 'yes', the patient makes his or her brain active. The change in blood volume at the frontal lobe is detected with near-infrared light. The instantaneous amplitude and phase of the change are calculated, and the maximum amplitude and phase change are obtained. The answer 'yes' or 'no' of the patient is detected using a discriminant analysis with these two quantities as variables. The rate of correct detection is 80% on average.
ER -
English
