NIR spectroscopy measurements of cognitive load elicited by GKT and target categorization

K. Izzetoglu, G. Yurtsever, A. Bozkurt, B. Yazici, S. Bunce, K. Pourrezaei, B. Onaral

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

Near infrared (NIR) is a portable, safe, affordable, non-invasive and negligibly intrusive functional optical imaging modality, which enables the measurement of the metabolic changes associated with cognitive activity. In this paper, we present the experimental procedures and data analysis of the functional near infrared (fNIR) measurements acquired from the forehead during cognitive tasks. The data is collected from subjects engaged in two standardized tasks, namely, the 'target categorization' and the 'guilty knowledge test' (GKT). In the case of target categorization, the aim is to study the changes in the blood oxygenation and volume level while the participants are experiencing decrements in vigilance, increased lapses of attention, cognitive slowing. We measured 25 minutes-long blood oxygenation and volume level changes during target responses in 11 participants performing target categorization. Data analysis results revealed that the level of oxygenation changes in missed targets is higher than the level in captured targets. The blood oxygenation and volume level changes during deceptive and truthful responses were measured in 16 participants performing the GKT and analyzed using statistical data analysis. The results of our data analysis showed that the level of oxygenation changes during 'lie' task is higher than the level during 'truth' task.

Original languageEnglish (US)
Title of host publicationProceedings of the 36th Annual Hawaii International Conference on System Sciences, HICSS 2003
EditorsRalph H. Sprague
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0769518745, 9780769518749
DOIs
StatePublished - Jan 1 2003
Event36th Annual Hawaii International Conference on System Sciences, HICSS 2003 - Big Island, United States
Duration: Jan 6 2003Jan 9 2003

Publication series

NameProceedings of the 36th Annual Hawaii International Conference on System Sciences, HICSS 2003

Other

Other36th Annual Hawaii International Conference on System Sciences, HICSS 2003
CountryUnited States
CityBig Island
Period1/6/031/9/03

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All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications

Cite this

Izzetoglu, K., Yurtsever, G., Bozkurt, A., Yazici, B., Bunce, S., Pourrezaei, K., & Onaral, B. (2003). NIR spectroscopy measurements of cognitive load elicited by GKT and target categorization. In R. H. Sprague (Ed.), Proceedings of the 36th Annual Hawaii International Conference on System Sciences, HICSS 2003 [1174296] (Proceedings of the 36th Annual Hawaii International Conference on System Sciences, HICSS 2003). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/HICSS.2003.1174296