2015 Fiscal Year Annual Research Report

深層学習アルゴリズムを用いた皮質ネットワークの表現方法と計算処理の研究

Research Project

Project/Area Number	15F15351
Research Institution	Institute of Physical and Chemical Research
Principal Investigator	ベヌッチアンドレア国立研究開発法人理化学研究所, 脳科学総合研究センター, チームリーダー (50722352)
Co-Investigator(Kenkyū-buntansha)	IMAMOGLU NEVREZ 国立研究開発法人理化学研究所, 脳科学総合研究センター, 外国人特別研究員
Project Period (FY)	2015-10-09 – 2018-03-31
Keywords	Mouse / Visual Cortex / Imaging / Decision Making / Neural Networks / Neural Computation / Dimensionality Reduction
Outline of Annual Research Achievements	Purpose of the research: The goal of this research proposal was to test the hypothesis that large-scale non-linear dynamical network models (i.e. recurrent neural networks - RNN) are an ideal mathematical framework to derive fundamental computational principles from the dynamics of large neuronal populations. We wanted to test this hypothesis in the context of perceptual learning (visual discrimination task). As a model system, we used the visual cortex of the mouse. This animal model has an unmatched set of experimental toolboxes to record and perturb the dynamics of large populations of cortical neurons. Achievements: The postdoctoral fellow awarded this prestigious fellowship, Dr. Nevrez Imamoglu had to leave the Laboratory for personal-related reasons. Given his Machine Learning background, Dr. Imamoglu spent a significant amount of time learning basic concepts in Systems Neuroscience, a novel field of research for him. Moreover, through continuous interactions with other Lab members, Dr. Imamoglu familiarized with the experimental procedures and the key characteristics of the neuronal data he was analyzing. Finally, he has provided important technical support to various aspects of other members’ projects, helping with software analysis and implementations. Unfortunately, regarding this fellowship proposal, Dr. Imamoglu had to leave the Laboratory before any progress could be made in terms of preliminary or publishable results.
Research Progress Status	翌年度、交付申請を辞退するため、記入しない。
Strategy for Future Research Activity	翌年度、交付申請を辞退するため、記入しない。
Remarks	Please, see my comments in the “Achievements” section.