לוח שנה משולב

Perception of connected speech relies on accurate syllabic segmentation and phonemic encoding. These processes are essential because they determine the building blocks that we can manipulate mentally to understand and produce speech. Segmentation and encoding might be underpinned by specific interactions between the acoustic rhythms of speech and coupled neural oscillations in the theta and low-gamma band. To address how neural oscillations interact with speech, we used a neurocomputational model of speech processing generating biophysically plausible coupled theta and gamma oscillations. We show that speech could be well decoded from this purely bottom-up artificial network’s low-gamma activity, when the phase of theta activity was taken into account. Because speech is not only a bottom-up process, we set out to develop another type of neurocomputational model that takes into account the influence of linguistic predictions on acoustic processing. I will present preliminary results obtained with such a model and discuss the advantage of incorporating neural oscillations in models of speech processing.

Abstract: Let Rep(GL(m|n)) denote the category of finite-dimensional algebraic representations of the supergroup Gl(m|n). Nowadays the abelian structure (Ext^1 between irreducibles, block description,...) is well understood. Kazhdan-Lusztig theory gives an algorithmic solution for the character problem, and in special cases even explicit character formulas. However we understand the monoidal structure hardly at all (e.g. the decomposition of tensor products into the indecomposable constituents). I will talk about the problem of decomposing tensor products "up to superdimension 0", i.e. about the structure of Rep(GL(m|n))N where N is the ideal of indecomposable representations of superdimension 0.

Toshiya Endo is a professor of Faculty of Life Sciences, Kyoto Sangyo University. He received his PhD degree for his NMR study on snake neurotoxins at Department of Biochemistry and Biophysics, Faculty of Science, the University of Tokyo in 1982. He became an assistant professor at Department of Chemistry, College of Technology, Gunma University in 1982, was promoted to an associate professor of the same department in 1987, and then became an associate professor of Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University in 1989. In the meantime (1986-1988), he was a visiting scientist at Biocenter, the University of Basel, Switzerland, where he joined Jeff Schatz’s group to start his work on protein import into mitochondria. In 1989, he moved to Nagoya University to become a PI as an associate professor at Department of Chemistry, Faculty of Science, Nagoya University, and became a full professor in 1991 at the same department. In 1996, he became a professor of Department of Chemistry, Graduate School of Science, Nagoya University. In 2003-2008, he was a project-based faculty of the Institute for Advanced Research, Nagoya University. He had been the leader of the Grant-in-Aid for Scientific Research in Priority Area from MEXT, ‘Protein Community’ (2007-2012), and now the recipient of the CREST grant from JST for 2012-2017. After research and education life for 24 years at Nagoya University, he recently moved to Kyoto Sangyo University in April 2014