NDLI: Differences in blood flow between auditory and visual stimuli in the Psychomotor Vigilance Task and GO/NOGO Task

Content Provider	IEEE Xplore Digital Library
Author	Hiroyasu, T. Fukushima, A. Yokouchi, H.
Copyright Year	2012
Description	Author affiliation: Fac. of Life & Med. Sci., Doshihsa Univ., Kyotanabe, Japan (Hiroyasu, T.; Yokouchi, H.) \|\| Grad. Sch. of Life & Med. Sci., Doshihsa Univ., Kyotanabe, Japan (Fukushima, A.)
Abstract	The Psychomotor Vigilance Task (PVT) and the GO/NOGO task are generally applied to measure the ability of sustained attention. Advances in functional brain imaging equipment, such as functional Magnetic Resonance Imaging (fMRI) and functional Near-Infrared Spectroscopy (fNIRS), have resulted in increased application of brain imaging with these tasks. However, several different stimuli are adopted in these tasks, including both auditory and visual stimuli. Therefore, even when a subject performs these tasks, it can be assumed that the activated brain regions would vary when the different stimuli are given. Furthermore, even when a subject performs the tasks with the same sustained attention, the activated brain regions would vary when the configurations of these tasks are different. In this study, the reaction time and changes in blood flow were measured when a subject performed the PVT and GO/NOGO tasks, and so it is possible to discuss (1) the differences between visual and auditory stimuli and (2) the differences between PVT and GO/NOGO tasks. The results indicated increased blood flow at the left side of the dorsolateral prefrontal cortex in the PVT with visual stimulus compared with the auditory stimulus. In the GO/NOGO task, the blood flow associated with visual stimuli increased at the both sides of the inferior temporal gyrus and the right side of the inferior frontal gyrus compared with auditory stimuli. These observations suggested that the configurations of these tasks, such as the PVT and the GO/NOGO tasks, exert influences on the activated brain regions when a subject performs these tasks.
Sponsorship	IEEE Eng. Medicine Biol. Soc.
Starting Page	1466
Ending Page	1469
File Size	1872305
Page Count	4
File Format	PDF
ISBN	9781424441198
ISSN	1557170X
e-ISBN	9781457717871
DOI	10.1109/EMBC.2012.6346217
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Visualization Blood Physiology Brain Magnetic resonance imaging Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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