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Proceedings Paper

A multidistance probe arrangement NIRS for detecting absorption changes in cerebral gray matter layer
Author(s): Toru Yamada; Shinji Umeyama; Keiji Matsuda
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Paper Abstract

We provide theoretical validation of the brain-functional detection using multidistance probe arrangement based on Monte Carlo simulations of five-layered model in which both scattering and absorption changes occur. It shows that optimized multidistance probe arrangement can be effective in removing interferences by scattering and absorption changes in upper layers and extracting absorption change in the gray matter layer. Using newly designed probes and their holder system, both conventional and proposed fNIRS measurements were implemented with non-functional (body and head movements and respiratory change) and functional (finger opposition) tasks. Artifacts, even if it correlate with task sequence, were well reduced. Functional signals were well localized at lateralized cerebral functional area.

Paper Details

Date Published: 23 February 2010
PDF: 12 pages
Proc. SPIE 7557, Multimodal Biomedical Imaging V, 75570X (23 February 2010); doi: 10.1117/12.841559
Show Author Affiliations
Toru Yamada, National Institute of Advanced Industrial Science and Technology (Japan)
Shinji Umeyama, National Institute of Advanced Industrial Science and Technology (Japan)
Keiji Matsuda, National Institute of Advanced Industrial Science and Technology (Japan)


Published in SPIE Proceedings Vol. 7557:
Multimodal Biomedical Imaging V
Fred S. Azar; Xavier Intes, Editor(s)

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