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Gunji Lab
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The lab explores "expression" through the unexpected behavior of living things.

AboutAbout the lab
A specially trained rhinoceros beetle.
Gunji Lab studies "expression" that emerges through the behavior of living things.
The lab introduces slight environmental changes to creatures such as ants, crabs, and hermit crabs, drawing out unexpected behavior that does not normally appear.
Through these experiments, models, and theory, the lab considers what life is.
Key terms
- Soldier crab
- A small crab that lives on tidal flats and walks around in large groups. Here it refers to the Minami-kometsuki-gani, a species of soldier crab.
- Model
- A tool for thinking about how a complex phenomenon works by replacing it with a simpler form.
ResearchResearch themes
Gunji Lab conducts experiments, modeling, and theoretical work that use slight environmental changes to draw out unexpected behavior that living things do not normally show. Its methods are broad, including mathematical models, animal behavior experiments, and human cognition experiments.
*Illustrative imageAnts on a rotating ground
The lab places ants in an environment where the ground rotates and examines whether behavior different from usual appears.
*Illustrative imageSoldier crab experiments
The lab deliberately confronts soldier crabs, which normally avoid the water's edge, with the waterline and examines how they behave.
*Illustrative imageHermit crab experiments
The lab has hermit crabs carry a plastic plate on their backs and examines how their behavior changes.
*Illustrative imageSwarm models
The lab builds models of swarms that allow the direction of cause and effect to be reversed. This also connects to research that analyzes the movements of crab swarms and turns them into models.
MembersFaculty
Gunji Lab's members consist of faculty and staff.
- ProfessorYukio Gunji
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: “Physarum polycephalum” HelenGinger / CC BY-SA 3.0 (cropped)
- Ants on a rotating ground: “Unidentified slime mold” Jerzy Opioła / CC BY-SA 4.0 (cropped)
- Soldier crab experiments: “An ant walking inside flower” DKDEVS / CC0 (cropped)
- Hermit crab experiments: “A Soldier crab at Noppharat Thara beach, Krabi, Thailand” Satdeep Gill / CC BY-SA 4.0 (cropped)
- Swarm models: “Hermit crab in Bakkhali September 2024 by Tisha Mukherjee 02” Tisha Mukherjee / CC BY-SA 4.0 (cropped)
- Related lab (Watanabe Lab): “DTI-sagittal-fibers” Thomas Schultz / CC BY-SA 3.0 (cropped)
- Related lab (Koreeda Lab): “Fame Media” https://famemedia.vn/ / CC BY-SA 4.0 (cropped)
- Related lab (Kawahara Lab): “Faces of Resilience” Agasielisha1234 / CC BY 4.0 (cropped)
- Related lab (Morimoto Lab): “Organ interior (organ pipes)” Bartłomiej Bulicz / CC BY-SA 3.0 (cropped)
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