Abstract
In this chapter, we refer to three contents under the theme of brain measures. The first outlines the anatomical and functional characteristics of the brain, and some past studies on the elucidation of information process mechanisms in the brain are shown. The second explains each principle and introduces each major measurement method based on the classification of the configuration and the function measurements. The configuration measures present computed tomography and magnetic resonance imaging (MRI), and the function measurements are positron emission tomography, functional MRI, and functional near-infrared spectroscopy (fNIRS). Finally, one of our actual studies on function measurements by fNIRS while playing a video game with a handheld game console with a two-dimensional (2D)/three-dimensional (3D) display as an example of fNIRS study is presented. A total of eight subjects sat on a chair and played the game. They first played TETRiS® for 60 s using the 2D display and continued the game for 60 s using the 3D display. The display was then returned to 2D, and the game was continued for 30 s. Regarding this as one set, fNIRS was measured while they continuously played five sets. Changes in oxyhemoglobin values over the three periods in the above five trials were recorded at 12 channels on the frontal, occipital, and bilateral temporal lobes at 7.7 Hz. Therefore, we concluded that sensory areas, such as the visual area, may have been activated when playing the game with 3D display compared to activation by 2D.
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Takada, M., Takada, H., Sugiura, A. (2021). Brain Measures. In: Takada, H., Yokoyama, K. (eds) Bio-information for Hygiene. Current Topics in Environmental Health and Preventive Medicine. Springer, Singapore. https://doi.org/10.1007/978-981-15-2160-7_1
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