Coyle, S. and Ward, T. and Markham, C.
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.
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.
Conference or Workshop Item
||Cerebral Blood Flow Changes; Motor Imagery; Near-infrared Spectroscopy; NIRS;
||Faculty of Science and Engineering > Electronic Engineering
Dr Tomas Ward
||18 Jun 2009 14:39
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