Evaluation of the position resolution of NIR topography by localised visual stimulation

Hirokazu Kakuta, Eiji Okada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Near-infrared (NIR) topography has been applied to the measurement of brain activation. However the position resolution of optical topography is not sufficient to measure focal brain activation. Since the localization of the brain activation in visual cortex depends on the visual stimuli position, it is difficult to resolve the localized brain activation in the visual cortex by NIR topography. In this study, we measured the localised brain activation evoked by visual stimulation to evaluate the position resolution of NIR topography with the high-density probe arrangement. The topographic image is obtained without solving inverse problem to investigate the effect of the high-density probe arrangement on improvement of the position resolution of NIR topography. When the brain activations evoked by the broad visual stimuli such as the whole checker boards, the topographic image measured with the single-density arrangement is almost the same as that with the double-density arrangement. The double-density arrangement effectively improves the topographic image when the brain activations were evoked by the localized visual stimuli such as the fanshaped checker boards.

Original languageEnglish
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8088
DOIs
Publication statusPublished - 2011
EventDiffuse Optical Imaging III - Munich, Germany
Duration: 2011 May 222011 May 24

Other

OtherDiffuse Optical Imaging III
CountryGermany
CityMunich
Period11/5/2211/5/24

Fingerprint

Photic Stimulation
stimulation
Topography
brain
Brain
topography
Chemical activation
activation
Infrared radiation
visual stimuli
evaluation
cortexes
Visual Cortex
probes
Inverse problems

Keywords

  • near infrared spectroscopy
  • optical topography
  • visual stimuli

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Kakuta, H., & Okada, E. (2011). Evaluation of the position resolution of NIR topography by localised visual stimulation. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 8088). [80881B] https://doi.org/10.1117/12.889798

Evaluation of the position resolution of NIR topography by localised visual stimulation. / Kakuta, Hirokazu; Okada, Eiji.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8088 2011. 80881B.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kakuta, H & Okada, E 2011, Evaluation of the position resolution of NIR topography by localised visual stimulation. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 8088, 80881B, Diffuse Optical Imaging III, Munich, Germany, 11/5/22. https://doi.org/10.1117/12.889798
Kakuta H, Okada E. Evaluation of the position resolution of NIR topography by localised visual stimulation. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8088. 2011. 80881B https://doi.org/10.1117/12.889798
Kakuta, Hirokazu ; Okada, Eiji. / Evaluation of the position resolution of NIR topography by localised visual stimulation. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8088 2011.
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