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Cerebral Blood Flow Changes related to Motor Imagery, using Near-infrared Spectroscopy (NIRS)

Coyle, S. and Ward, T. and Markham, C. (2003) Cerebral Blood Flow Changes related to Motor Imagery, using Near-infrared Spectroscopy (NIRS). In: World Congress on Medical Physics and Biomedical Engineering, 2003, Sydney, Australia.

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Abstract

Motor imagery and motor task execution has been shown to activate similar areas of the sensorimotor area of the cerebral cortex [Beisteiner et al.]. This has been studied using fMRI, PET and EEG. Four right-handed male subjects aged 25-45 participated in this study. The optical response was measured from the sensorimotor area of the cerebral hemisphere contralateral to hand movement. Cerebral blood volume changes, evident from a decrease in the detected light signal, were observed during the voluntary hand movement tasks and also from the imagined hand movement tasks. Not only do the results of this study further validate the theory that real and imagined movements activate similar cortical areas, but it also brings to light a novel approach to brain-computer interface development. Classification of EEG features during motor imagery has been applied to EEG-based brain-computer interfaces [Pfurtscheller et al]. Cerebral blood flow changes due to motor imagery detected using NIRS have potential use in an optical brain-computer interface.

Item Type: Conference or Workshop Item (Paper)
Keywords: Cerebral Blood Flow Changes; Motor Imagery; Near-infrared Spectroscopy; NIRS;
Subjects: Science & Engineering > Electronic Engineering
Item ID: 1450
Depositing User: Dr Tomas Ward
Date Deposited: 18 Jun 2009 14:39
Refereed: Yes
URI:

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