Title :
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
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;
Conference_Titel :
Sensors, 2010 IEEE
Conference_Location :
Kona, HI
Print_ISBN :
978-1-4244-8170-5
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2010.5690277
