RIKEN's New Research Center for Brain Science: 脳神経科学研究センター(理研CBS)ウェブサイト



[Journal Club]

“ Computational Neuroscience Seminar ”

BSI Private Event

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June 17, 2010 10:15 - 11:15


"Computational Neuroscience Seminar" The purpose of the seminar is to present interesting new papers in the field of Computational Neuroscience, and to give both theoreticians and experimentalists an opportunity to present their research to an audience composed primarily of theoreticians. Everyone is welcome to participate in the seminar, which takes place every 1st and 3rd Thursday of the month in the 2F seminar room of the BSI central building.
Ecker, Berens, Keliris, Bethge, Logothetis, Tolias, Decorrelated neuronal firing in cortical microcircuits, Science 327: 584 (2010) Daniel Durstewitz, Nicole M. Vittoz, Stan B. Floresco, Jeremy K. Seamans Abrupt Transitions between Prefrontal Neural Ensemble States Accompany Behavioral Transitions during Rule Learning. Neuron, Volume 66, Issue 3, 438-448, 13 May 2010 Correlated trial-to-trial variability in the activity of cortical neurons is thought to reflect the functional connectivity of the circuit. Many cortical areas are organized into functional columns, in which neurons are believed to be densely connected and to share common input. Numerous studies report a high degree of correlated variability between nearby cells. We developed chronically implanted multitetrode arrays offering unprecedented recording quality to reexamine this question in the primary visual cortex of awake macaques. We found that even nearby neurons with similar orientation tuning show virtually no correlated variability. Our findings suggest a refinement of current models of cortical microcircuit architecture and function: Either adjacent neurons share only a few percent of their inputs or, alternatively, their activity is actively decorrelated.

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