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Proceedings Paper

Smell detection could be traced in fNIRS signals recorded from the forehead
Author(s): Shima T. Moein; Sepideh Khoneiveh; Soroush Mirmobini; Ardy Wong; Issa Zakeri; Kambiz Pourrezaei
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Paper Abstract

Objective assessment of olfactory function has diagnostic and legal value. We have designed an odor detection task in which the subject reported the conscious sensing of an odorant via a button press while the hemodynamic activity from the forehead was monitored using a 4-channel fNIRS system. The task consisted of intermingled odor and non-odor trials. We recorded from 17 subjects and each of them underwent 60 trials. The time domain analysis of the raw data showed that the hemodynamic activity was statistically different between the odor and non-odor trials especially for oxyhemoglobin in far channels. In order to single out the odor-induced hemodynamic response from that of motor activity, finger tapping was considered as a control condition for odor detection. Pairwise correlation indicated that motor activity had a short lasting influence on hemodynamic response while the hemodynamic response to different odors were highly correlated over time. In conclusion, we believe that fNIRS monitoring of hemodynamic response could be potentially used for objective assessment of odor detection in cases that subjective report is unreliable.

Paper Details

Date Published: 21 February 2020
PDF: 9 pages
Proc. SPIE 11237, Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables, 1123705 (21 February 2020); doi: 10.1117/12.2550854
Show Author Affiliations
Shima T. Moein, Institute for Research in Fundamental Sciences (Iran, Islamic Republic of)
Sepideh Khoneiveh, Institute for Research in Fundamental Sciences (Iran, Islamic Republic of)
Soroush Mirmobini, Institute for Research in Fundamental Sciences (Iran, Islamic Republic of)
Ardy Wong, Drexel Univ. (United States)
Issa Zakeri, Drexel Univ. (United States)
Kambiz Pourrezaei, Drexel Univ. (United States)


Published in SPIE Proceedings Vol. 11237:
Biophotonics in Exercise Science, Sports Medicine, Health Monitoring Technologies, and Wearables
Babak Shadgan; Amir H. Gandjbakhche, Editor(s)

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