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Kansei and Behavioral Science Lab
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A lab that explores human characteristics through light, sleep, and biological rhythms.

AboutAbout the lab
Understanding human characteristics to propose better environments.
The lab of Professor Shigekazu Higuchi studies the genetic and physiological characteristics that humans have as living organisms.
It is interested in how these characteristics are affected by differences in an individual's development and living environment.
The lab believes that the characteristics it uncovers will lead to proposals for environments and lifestyles suited to people living in today's diverse society.
The main research themes are "light, sleep, and biological rhythms" and "the brain and kansei (sensibility)."
Key terms
- Circadian rhythm
- The body's biological clock rhythm, which repeats on a cycle of about 24 hours. Its timing can shift depending on factors such as light exposure.
- Melatonin
- A hormone whose secretion is suppressed by exposure to light. It is measured from saliva and used as an indicator of the timing of the circadian rhythm.
- Mirror neuron system
- A mechanism involved in brain activity when observing other people's actions. It is studied in neuroscience.
ResearchResearch themes
The lab studies how humans' genetic and physiological characteristics change with differences in growth and living environment, from the perspectives of light, sleep, and biological rhythms and of the brain and kansei (sensibility). Its research topics include the light sensitivity of the circadian rhythm, the light environment for children and during night shifts, and the mirror neuron system.
Individual and Ethnic Differences in Circadian Light Sensitivity
The lab investigates how much people differ in the sensitivity of their circadian rhythms to light, and whether there are differences between ethnic groups.
*Illustrative imageChildren's Nighttime Light Environment and the Circadian Rhythm
The lab investigates how the light environment children are exposed to at night relates to their sleep, circadian rhythms, and melatonin.
*Illustrative imageLight Environment, Circadian Rhythm, and Melatonin During Night Shifts
The lab investigates how the light environment during night shifts affects the circadian rhythm and melatonin. Effects on performance and sleepiness are also studied.
*Illustrative imageThe Human Mirror Neuron System
The lab studies the human mirror neuron system from a neuroscience perspective.
MembersFaculty
- ProfessorShigekazu Higuchi
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: “Sunrise at Bodie Island Light Station” CapeHatterasNPS / Public domain (cropped)
- Children's Nighttime Light Environment and the Circadian Rhythm: “Summer night view north along a stretch of Mercer County Route 647 (Nursery Road) dominated by fluorescent street lights in the Mountainview section of Ewing Township, Mercer County, New Jersey” Famartin / CC BY-SA 4.0 (cropped)
- Light Environment, Circadian Rhythm, and Melatonin During Night Shifts: “HK Tuen Mun Hospital ground floor corridor interior July 2016 DSC” YipshaiukOWL / CC BY-SA 4.0 (cropped)
- The Human Mirror Neuron System: “CT Brain Scan” Goleisureintl / CC BY 4.0 (cropped)
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