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Fujisawa Lab
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The lab records neuronal activity to uncover the mechanisms underlying memory and spatial cognition.
AboutAbout the lab
Observing neurons directly to understand memory and spatial cognition
The Fujisawa Lab studies how the brain supports functions such as episodic memory and the perception of time and space, working at the level of neural circuits.
Using silicon probes, a type of electrode, the lab simultaneously records the activity of many neurons in the hippocampus and cerebral cortex of behaving animals such as rats.
The lab analyzes the resulting data and builds mathematical models to clarify how neurons contribute to cognitive functions.
The lab is a cooperative chair of the Department of Complexity Science and Engineering, run by a research team at the RIKEN Center for Brain Science.
Key terms
- Episodic memory
- Memory of events a person has personally experienced, such as what happened, when, and where
- Hippocampus
- A region deep in the brain involved in forming memories and in knowing where one is located
- Silicon probe
- A tool consisting of a thin silicon needle with many electrodes arranged along it. It is inserted into the brain to record signals from many neurons at the same time
NewsLab news
A researcher received the Japan Neuroscience Society Encouragement Award for FY2026
A researcher received the FY2026 (Reiwa 8) Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Young Scientists' Prize
Discovery of a slow 4 Hz brain rhythm that strengthens with learning
A joint research group including lab researchers reconstructs hippocampal information from membrane potential fluctuations in a small number of cells
Visiting Professor Fujisawa received the 39th Nakaakira Tsukahara Memorial Award from the Brain Science Foundation
ResearchResearch themes
The lab aims to elucidate the mechanisms of cognitive functions such as episodic memory and the perception of time and space at the level of neural circuits. It uses large-scale extracellular recording to observe the activity of many neurons simultaneously, and analyzes the data and builds mathematical models.
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MembersFaculty
The Fujisawa Lab consists of a Team Director, researchers and Special Postdoctoral Researchers, Junior Research Associates (graduate students), and technical staff.
- Visiting ProfessorShigeyoshi Fujisawa
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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: “Ιππόκαμπος ποντικού” Archontia Kaminari / CC BY-SA 4.0 (cropped)
- Memory and Spatial Cognition Viewed Through Neural Circuits: “DCX+ cells in the dentate gyrus” Oleg Tsupykov / CC BY-SA 4.0 (cropped)
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