The primate pulvinar, a visual thalamic region, has showed remarkable expansion through evolution. However, its functional role has been enigmatic. Here, using a combination of neural recordings, pharmacological inactivation and computational modeling, we found that responses of pulvinar neurons encode a subjectís certainty of visual categorization and contribute to perceptual confidence. The current findings can open a new window for unraveling the neural mechanisms of normal and disordered sensory awareness.
Research Area : “The Dynamic Mechanism of and Fundamental Technology for Biological System”
Research Theme :“Decision mechanism bridging the parallel and hierarchic gap in the primate brain”
Yutaka Komura, Akihiko Nikkuni, Noriko Hirashima, Teppei Uetake & Aki Miyamoto. “Responses of pulvinar neurons reflect a subject's confidence in visual categorization”
Nature Neuroscience, Published online 12 May 2013
Yutaka Komura, Ph.D.
Pricipal Investigator, Human Technology Research Institute, AIST
Takafumi Kawaguchi, Fumiharu Kimura,
Life Science Group, Department of Innovation Research,
Japan Science and Technology Agency