Associate Professor Hiroki Tanaka

Area and Subject Taught Visual information processing
Research Theme(s) Processing and representation of visual information in the brain
Academic Degrees Doctor of Science (Osaka University)
Keywords for Research Field Brain science, Vision, Neuroscience
Office Phone Number Not Public

Research Overview

Our ability to perceive and recognize objects in the visual environment is so extraordinary that the newest computer system cannot replicate. I am studying the neural mechanisms of this excellent ability. Specifically, I am interested in how images from the eyes are represented in the early visual cortices or how visual features such as motion, depth, and textures are processed there. My research is primarily based on physiological methods, but I also employ psychophysical approaches to gain insights regarding the early visual system of the human brain. Furthermore, I try to model functions and behaviors of the early visual cortices computationally so that they are duplicated in the computer vision system.
Also, I recently started to work on developing a new sort of visual prosthesis system, by physiologically examining whether cortical stimulation via a high-density planer electrode-array can effectively activate the visual cortex.

Notable Publications and Works in the Last Three Years

  1. 清水駿・井上真一・田中宏喜. V1野空間周波数チューニングのダイナミクスとその構造. 信学技報 vol. 116, no. 264, 13-18 (2016).
  2. 芝田賢, 田中宏喜. ハイブリッド型視差検出器を入力とする3層ニューラルネットワークによる両眼視差の識別. 信学技報vol 115, no.514, NC2015-89. pp. 113-117 (2016)
  3. 田中宏喜. V1野における異なる時間スケールの同期 : 多点電極アレイを用いた計測結果を中心に. 日本神経回路学会誌Vol 22, no4 pp.181-188 (2015)
  4. 田中宏喜, 田村弘, 大澤五住. ネコ17野・18野における神経同期発火の空間構造. 信学技報vol 115, no.111, NC2015-1, pp. 21-26 (2015)
  5. Sasaki K, Kimura R, Ninomiya T ,Tanaka H, et al. Supranormal orientation selectivity of visual neurons in orientation-restricted animals. Sci. Rep. 5:16712- (2015).
  6. Tanaka H, Tamura H, Ohzawa I. Spatial range and laminar structures of neuronal correlations in the cat primary visual cortex. Journal of Neurophysiology 112(3) 705-718 (2014).
  7. 田中宏喜(分担翻訳)「カンデル,神経科学の原理 第5版」メディカル・サイエンス・インターナショナル (2014)
  8. 亀田 成司,林田 祐樹,田中 宏喜,八木 哲也. 高インピーダンス神経電極用多チャンネル電流刺激チップの開発. 計測自動制御学会論文集 50(8) 594-601 (2014)
  9. 竹内浩造,林田祐樹,石川直裕,田中宏喜,Tamas Fehervari,岡崎祐香,八木哲也.マウス視覚野V1電気刺激に惹起される応答の領野内および領野間伝播特性. 電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 113(499) 7-12 (2014)
  10. Hayashida Y, Takeuchi K, Ishikawa N, Okazaki Y, Fehevari T, Tanaka H, and Yagi, T. Voltage-Sensitive Dye Imaging of the Visual cortices responding to electrical pulses at different intervals in mice in vivo. The 36th international conference of the IEEE engineering in medicine and biological society (EMBC) 402-405 (2014)
  11. 田中宏喜(分担執筆)「岩波生物学事典第5版」岩波書店 (2013)
  12. 大澤五住,佐々木耕太,田中宏喜「視覚質感に関わる情報抽出」生体の科学 63(4)276-283 医学書院(2012)
  13. 田中宏喜 理化学研究所 脳科学辞典(online)「受容野」,「視差エネルギーモデル」(2012)