| Budget Amount *help |
¥27,170,000 (Direct Cost: ¥20,900,000、Indirect Cost: ¥6,270,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2011: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
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| Outline of Final Research Achievements |
The brain is able to determine the temporal order of multiple sensory signals (e.g., visual and auditory signals) arising from the same or different events; this is a key factor in reconstructing the external world. However, the existence of two types of time lag, physical (from the event to receptors) and neural (from receptors to a comparator), makes temporal ordering a complex process. Physical time lags are flexible (e.g., dependent on current physical context such as distance from the event), while neural time lags are stable (e.g., changing slowly in the process of development or aging). We performed a series of experiments of audiovisual temporal order judgments, and showed the existence of different types of temporal recalibrations with distinct time constants: a fast type that primarily adjust for physical lag (lag adaptation) and a slower type that principally adjust for neural lag (zero adjustment).
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