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Biological Rhythms (Hiroshi Ito) Lab
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A lab that uses mathematical and experimental approaches to uncover how biological rhythms arise.

AboutAbout the lab
Uncovering what lies behind biological rhythms through mathematics and experiments.
Associate Professor Hiroshi Ito conducts research that discovers the phenomena underlying biological rhythms and elucidates their mechanisms both mathematically and experimentally.
Organisms studied include cyanobacteria, plants, squid, and jellyfish.
In classes, Associate Professor Ito teaches programming and simulation in the Future Concept Design Course and chronobiology in the Future Coexistence Design Course.
Through running the "Geiko Art & Science Cafe," the lab is also engaged in science communication.
Key terms
- Circadian rhythm
- A rhythm inside an organism's body that recurs on a cycle of about 24 hours
- Cyanobacteria
- A group of bacteria that perform photosynthesis
- Cellular clock
- A timekeeping mechanism that a cell has within itself
ResearchResearch themes
The lab works to discover the phenomena underlying biological rhythms and to elucidate their mechanisms, using both mathematical and experimental methods.
*Illustrative imageThe origin of cellular clock accuracy
By observing circadian rhythms in single cyanobacterial cells, the lab investigates the origin of how a cellular clock can keep time so accurately.
*Illustrative imageHow flowering time is determined in plants
The lab studies the mechanism that determines when a plant flowers.
*Illustrative imageShared features of rhythms in squid and jellyfish
Using squid and jellyfish, the lab investigates whether the mechanisms that generate biological rhythms are shared across species, that is, how universal they are.
MembersFaculty
- Associate ProfessorHiroshi Ito
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: “Interplay between the central and peripheral circadian clocks” Davide Gnocchi, Matteo Pedrelli, Eva Hurt-Camejo, and Paolo Parini / CC BY 4.0 (cropped)
- The origin of cellular clock accuracy: “Cyanobacteria - Nostoc commune - geograph.org.uk - 1470398” Lairich Rig / CC BY-SA 2.0 (cropped)
- How flowering time is determined in plants: “Morning Glory Flowers 11” Yokoyama, Masana, 1833–1908 (author)Hattori, Sessai, 1807–? (artist) / Public domain (cropped)
- Shared features of rhythms in squid and jellyfish: “Jellyfish tank at CalAcademy 1” Rhododendrites / CC BY-SA 4.0 (cropped)
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