| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Outline of Final Research Achievements |
The purpose of this study was to determine the factors related to visual discomfort and its underlying mechanisms. To achieve this purpose, the discomfort of flickering stimuli with different amplitude and phase spectra was measured. We found that the discomfort in the temporal domain is dependent not only on the amplitude spectrum but also the phase spectrum. While there was no correlation between the concentration of any neurotransmitter in the primary visual cortex and discomfort, the blood oxygen level-dependent (BOLD) responses for the stimuli that can induce strong discomfort tended to increase. These findings suggest that visual discomfort can be associated with a higher process that is sensitive to the specific profile of the phase structure of the stimuli as well as the overstimulation or increased neural activity in the early visual system.
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