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Cognitive Science Lab
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The lab explores rhythm perception, the foundation of spoken language and music.
AboutAbout the lab
Exploring how rhythm and time are heard.
The cognitive science lab of Assistant Professor Emi Hasuo conducts research to clarify the mechanisms of "rhythm perception (time perception)," which underlies communication through spoken language and music.
One of its current themes is examining how the beat affects rhythm perception.
The lab also studies assimilation and contrast between adjacent time intervals, and individual differences in how the filled-duration illusion appears.
Recently, through joint research, it has also been working on auditory research, such as whether alternating sounds are heard as a single stream or split into two.
Key terms
- Rhythm perception
- The ability to sense the sequence of timings at which sounds occur as rhythm and as lengths of time.
- Beat
- The regular pulse that forms the foundation of rhythm.
- Assimilation
- A phenomenon in which, for two adjacent time intervals, the perceived length of one gets closer to that of the other.
ResearchResearch themes
The lab aims to clarify the mechanisms of rhythm perception (time perception), which underlies communication through spoken language and music. It studies the rhythm of sound sequences and how the length of time intervals is perceived.
*Illustrative imageEffect of the Beat on How Rhythm Is Heard
The lab studies how the beat affects rhythm perception. Its research keywords are rhythm perception, beat, assimilation, and attention.
*Illustrative imageIndividual Differences in the Filled-Duration Illusion
The lab studies how the "filled-duration illusion" differs from person to person. Its research keywords are time perception, filled duration, empty duration, multivariate analysis, and individual differences.
Assimilation and Contrast of Adjacent Time Intervals
The lab studies assimilation and contrast, which occur in the perception of two adjacent time intervals. Its research keywords are time perception, rhythm perception, and the time-shrinking illusion.
Whether Sounds Are Heard as One Stream or Split in Two
When sounds of different pitch or timbre alternate, they can be heard as either one stream or two. In joint research, the lab studies how differences in pitch and the arrangement of frequency components affect how they are heard.
MembersFaculty
- Assistant ProfessorEmi Hasuo
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Drummers in Air” Ramesh Lalwani / CC BY 2.0 (cropped)
- Effect of the Beat on How Rhythm Is Heard: “Simple duple drum pattern” Created by Hyacinth (talk) 10:17, 25 November 2010 using Sibelius 5. / Public domain (cropped)
- Individual Differences in the Filled-Duration Illusion: “Stopwatch, , ako” Ansgar Koreng / CC BY-SA 4.0 (cropped)
- Related lab (Cognitive Science Lab): “Metronome Nikko” Vincent Quach (Invincible) / CC BY-SA 3.0 (cropped)
- Related lab (Psychology Lab): “Motion illusion in star arrangement” Fiestoforo / CC BY 3.0 (cropped)
- Related lab (Psychology Lab): “Motion - Train New York City 2013” Stuart McAlpine / CC BY 2.0 (cropped)
- Related lab (Psychology (Hiroyuki Ito) Lab): “Variation on Z N spin model” Yourimarina / CC BY 4.0 (cropped)
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