Effects of spatial variation of skull and cerebrospinal fluid layers on optical mapping of brain activities

Shuping Wang, Nanae Shibahara, Daishi Kuramashi, Shinpei Okawa, Naoto Kakuta, Eiji Okada, Atsushi Maki, Yukio Yamada

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    In order to investigate the effects of anatomical variation in human heads on the optical mapping of brain activity, we perform simulations of optical mapping by solving the photon diffusion equation for layered-models simulating human heads using the finite element method (FEM). Particularly, the effects of the spatial variations in the thicknesses of the skull and cerebrospinal fluid (CSF) layers on mapping images are investigated. Mapping images of single active regions in the gray matter layer are affected by the spatial variations in the skull and CSF layer thicknesses, although the effects are smaller than those of the positions of the active region relative to the data points. The increase in the skull thickness decreases the sensitivity of the images to active regions, while the increase in the CSF layer thickness increases the sensitivity in general. The images of multiple active regions are also influenced by their positions relative to the data points and by their depths from the skin surface.

    Original languageEnglish
    Pages (from-to)410-420
    Number of pages11
    JournalOptical Review
    Volume17
    Issue number4
    DOIs
    Publication statusPublished - 2010 Aug 5

    Keywords

    • Anatomy of human head
    • CSF layer
    • Optical mapping
    • Photon diffusion equation
    • Skull layer

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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