Revealing visual representation mechanism of objects by multiple functional modules

2010 Fiscal Year Final Research Report

• Project/Area Number: 21700442
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Neurophysiology and muscle physiology
• Research Institution: Niigata University
• Principal Investigator: MIYAKAWA Naohisa Niigata University, 医歯学系, 特任助教 (60415312)
• Project Period (FY): 2009 – 2010
• Keywords: システム神経生理 / ニューロインフォマティクス / 脳・神経 / 画像、文章、音声等認識 / リモートセンシング / 生体生命情報学

Research Abstract

I developed a mesh-shaped electrode array for electrocorticogram recording with openings for small probes, such as microelectrode and optical fiber, to pass through in collaboration with a group lead by Dr. Suzuki at University of Tokyo. I implanted this ECoG array together with a penetrating microelectrode array into the macaque IT cortex, and simultaneous recorded visually evoked cortical potential and unit activities while the monkey performed a fixation task. Decoding analysis showed that classification of the stimulus category, such as face, facial view and species could be performed with similar performance level from both ECoG and multi-site unit recording. This result also indicated that postoperative penetration of multiple fine probes into the cerebral cortex from ECoG windows applicable without major damage to the cortical function. This result suggests promising application to simultaneous conduction of multisite stimulation with ontogenetics tools, such as channel-rhodopsin, and multi-site electrophysiological recording from behaving primate visual cortices.

Research Products

• [Journal Article] Intrasulcal electrocorticography inmacaque monkeys with minimally invasive neurosurgical protocols.
  • Author(s): Matsuo T, Kawasaki K, Osada T, Sawahata H, Suzuki T, Shibata M, Miyakawa N, Nakahara K, Iijima A, Sato N, Kawai K, Saito N, Hasegawa I
  • Journal Title: Frontiers in Systems Neuroscience in press
• [Presentation] Minimally invasive surgical procedures for intrasulcul electrocortico graphy inmacaques (2010)
  • Author(s): Matsuo T, Kawasaki K, Sawahata H, Shibata M, Miyakawa N, Kawai K, Sato N, Saito N, Nakahara K, Suzuki T, Hasegawa Face Body I.
  • Organizer: Soc Neurosci Abstr 36
  • Place of Presentation: San Diego USA
  • Year and Date: 2010-11-16
• [Presentation] Object-selective spike activitiessimultaneously recorded from multipleneurons in the inferior temporal cortexusing a floating microelectrode array. (2009)
  • Author(s): Hayashi R, Miyakawa N, Tanifuji M.
  • Organizer: Soc Neurosci Abstr 35
  • Place of Presentation: Chicago USA
  • Year and Date: 2009-10-18
• [Presentation] Face identity decoding by population activity in macaque inferotemporal cortex face-selective region. (2009)
  • Author(s): Miyakawa N, Hayashi R, Tanifuji M
  • Organizer: Neuroscience Res Suppl 65 S205-S206
  • Place of Presentation: Nagoya Japan
  • Year and Date: 2009-09-18
• [Presentation] Recording multiple neural activities from the inferior temporal cortex using achronically implanted micro-electrode array. (2009)
  • Author(s): Hayashi R, Miyakawa N, Tanifuji M
  • Organizer: Neuroscience Res Suppl 65, S251
  • Place of Presentation: Nagoya Japan
  • Year and Date: 2009-09-16
• [Presentation] Category mapping of macaque anterior ITcortex using electrocorgicogram (ECoG)array.
  • Author(s): Miyakawa N, Sawahata H, Majima K, Kawasaki K, Matsuo T, Kotake N, Kamitani Y, Suzuki T, Hasegawa I
  • Organizer: Physiol Soc of Japan Abstr, 88, Online presentation, 2011(This meeting was held only online due tothe earthquake/tsunami in Tohoku, Japan)