Near-infrared spectroscopy in the analysis of functional brain activity during cognitive tasks

Author

Abibullaev, Berdakh ; Lee, Seung Hyun ; Kang, Won-Seok ; An, Jinung ; Seo, Hee Don

Author_Institution

PARI, Daegu Gyeongbuk Inst. of Sci. & Technol., Daegu, South Korea

fYear

2010

fDate

1-4 Nov. 2010

Firstpage

542

Lastpage

547

Abstract

This paper presents our empirical results by using 32 channel NIRS system to examine the changes in oxygenation in regions of prefrontal cortex. Four healthy subjects participated in the experiment by performing various cognitive tasks such as mathematical, imaginary and computer game. The concentration levels in oxyHb and deoxyHb varied depending on subject´s mental workload as a result we could locate strong brain activation regions. We analyzed hemoglobin concentrations in wavelet domain to detect and extract the true brain stimulus from noisy NIRS measurements.

Keywords

biochemistry; bioelectric phenomena; biomedical measurement; brain; cognition; haemodynamics; infrared spectroscopy; molecular biophysics; neurophysiology; oxygen; proteins; wavelet transforms; brain activation regions; brain stimulus; cognitive tasks; computer game; deoxyHb; functional brain activity; hemoglobin concentrations; imaginary task; mathematical task; near-infrared spectroscopy; oxyHb; oxygenation; prefrontal cortex; subject mental workload; wavelet domain;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2010 IEEE

Conference_Location

Kona, HI

ISSN

1930-0395

Print_ISBN

978-1-4244-8170-5

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2010.5690277

Filename

5690277