Abstract
We performed simultaneous measurements of functional near-infrared spectroscopy (fNIRS), respiratory rate (RR) using a CO2 monitor, and pulse rate (PR) using a pulse oxymeter at 25-ms sampling intervals. Healthy volunteers were subjected to both mental task (volunteers traced a picture shown on a PC monitor with an inverted mouse) and physiological task (their right fingers were immersed into the ice-cold water). Obtained data were analyzed using the three components auto-regressive (AR) model. During the mental task, contribution of PR to fNIRS signal (oxygenated hemoglobin; oxy-Hb) was <15% and that of RR was <10%, while during the physiological task, contribution of PR to fNIRS signal was <20% and that of RR was <5%. Based on the above results, we will discuss the effects of the autonomic nervous system on functional neuroimaging using fNIRS.
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This work was supported by Grants-in-Aid for CREST of Japan Society and Technology Agency (JST).
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Seiyama, A., Sasaki, Y., Takatsuki, A., Seki, J. (2012). Effects of the Autonomic Nervous System on Functional Neuroimaging: Analyses Based on the Vector Autoregressive Model. In: Wolf, M., et al. Oxygen Transport to Tissue XXXIII. Advances in Experimental Medicine and Biology, vol 737. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-1566-4_12
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DOI: https://doi.org/10.1007/978-1-4614-1566-4_12
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