| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The aim of this project was to clarify the underlying mechanism for rhythm perception, which is based on the perception of short time intervals below few hundred milliseconds. Two types of time intervals were employed in the study: Filled intervals marked by the onset and the offset of a continuous sound, and empty intervals marked by the onsets of two brief sounds. Subjective durations of filled and empty intervals were measured for time intervals in range of 30 to 600 ms. Results showed that, while the subjective duration of filled intervals increased linearly as the physical duration increased throughout the whole duration range (i.e. 30-600 ms), the relationship between subjective and physical durations for empty intervals changed at around 100 ms; the slope was steeper for shorter durations and became gentler for longer ones. The results suggest that the mechanism for processing empty intervals changes for durations below and above the boundary at around 100 ms.
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