Faculty Members

Professor
NAKAHARA Kiyoshi

PhD, Kyoto University, Japan, 1997

Job titles:

- Dean, School of Informatics
- Head, Informatics Course
Affiliation:

- School of Informatics
- Information Systems Engineering Course, Department of Engineering, Graduate School of Enginering
- Informatics Course, Department of Engineering, Graduate School of Enginering
- Research Center for Brain Communication, Research Institute
Personal web site: https://sites.google.com/view/nakahara-lab/home-english
researchmap： https://researchmap.jp/nhk
Article from the "Cutting-edge Research and Social Contribution"：
https://www.kochi-tech.ac.jp/english/power/research/closing_in_on_the_mechanism_of_memory_which_is_what_makes_us_human.html

Areas of specialization	Functional Brain Imaging
Laboratory/research office	Laboratory of Cognitive Neuroscience Episodic memory, the memory of personal experiences, can weave the fabric of our lives. The retrieval of episodic memories can be compared to "mental time travel," which involves related sensations such as time, place, emotion, and perceptions. One of our central research themes is the brain mechanisms underlying episodic memory. Our recent studies used functional magnetic resonance imaging (fMRI) and revealed how "remote memories" from more than ten years ago, as well as temporal and spatial contexts of episodic memory, can be represented in the brain. We will continue to use fMRI and other techniques to challenge central questions about memory.
Current research topics
Educational background
Professional background	2014-: Professor, School of Information, Kochi University of Technology 2013-: Professor, Research Institute, Kochi University of Technology
Licenses
Academic societies	The Organization for Human Brain Mapping The Physiological Society of Japan

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Courses

* Courses provided in English are shown with (E) mark

Undergraduate school	Project Research 1 Project Research 2 Project Research 3 Seminars on the School of Information Graduation Thesis Cognitive Neuroscience Learning and Memory Selected Topics in Information Science and Technology
Graduate school	Seminar on Infomatics I Seminar on Infomatics II Advanced Seminar 1 Advanced Seminar 2 Individual Work for Graduate

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Research activities

Research papers	Authors: Ryutaro KASEDO, Atsuhiko IIJIMA, Kiyoshi NAKAHARA, Yusuke ADACHI, Fumitaka HOMAE, Ryu-ichiro HASHIMOTO, Isao HASEGAWA Title: The Role of Dual-step Linguistic Structuring in Self-paced Reading Rhythms Journal: Advanced Biomedical Engineering, Vol. 13, pp. 343-353, Japanese Society for Medical and Biological Engineering Year: 2024 Authors: Moe Okayasu, Tensei Inukai, Daiki Tanaka, Kaho Tsumura, Reiko Shintaki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura Title: The Stroop effect involves an excitatory–inhibitory fronto–cerebellar loop Journal: Nature Communications, Vol. 14, No. 27, Springer Nature Year: 2023 Authors: TSUMURA Kaho , SHINTAKI Reiko , TAKEDA Masaki, CHIKAZOE Junichi, NAKAHARA Kiyoshi, JIMURA Koji Title: Perceptual uncertainty alternates top-down and bottom-up fronto-temporal network signaling during response inhibition Journal: The Journal of Neuroscience, Vol. 42, No. 22, pp. 4567-4579, Society for Neuroscience Year: 2022 Authors: Hisashi Tanigawa, Kei Majima, Ren Takei, Keisuke Kawasaki, Hirohito Sawahata, Kiyoshi Nakahara, Atsuhiko Iijima, Takafumi Suzuki, Yukiyasu Kamitani, Isao Hasegawa Title: Decoding distributed oscillatory signals driven by memory and perception in the prefrontal cortex Journal: Cell Reports, Vol. 39, No. 2, p. 110676, CellPress Year: 2022 Authors: Teppei Matsui, Yoshiki Hattori, Kaho Tsumura, Ryuta Aoki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura Title: Executive control by fronto-parietal activity explains counterintuitive decision behavior in complex value-based decision-making. Journal: NeuroImage, Vol. 249, p. 118892, Elsevier Year: 2022 Authors: Kaho Tsumura, Keita Kosugi, Yoshiki Hattori, Ryuta Aoki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura Title: Reversible Fronto-occipitotemporal Signaling Complements Task Encoding and Switching under Ambiguous Cues. Journal: Cerebral Cortex, Vol. bhab324, Oxford Academic Year: 2021 Authors: Ruedeerat Keerativittayayut, Ryuta Aoki, Taghizadeh Sarabi Mitra, Koji Jimura, Kiyoshi Nakahara Title: Large-scale network integration in the human brain tracks temporal fluctuations in memory encoding performance. Journal: eLife, Vol. doi: 10.7554/eLife.32696., eLife Sciences Publications Year: 2018 Authors: NAKAHARA Kiyoshi, ADACHI Ken, KAWASAKI Keisuke, MATSUO Takeshi, SAWAHATA Hirohito, MAJIMA Kei, TAKEDA Masaki, SUGIYAMA Sayaka, IIJIMA Atsuhiko, TANIGAWA Hisashi, SUZUKI Takafumi, KAMITANI Yukiyasu, HASEGAWA Isao Title: Associative-memory representations emerge as shared spatial patterns of theta activity spanning the primate temporal cortex Journal: Nature Communications, Vol. doi: 10.1038/ncomms11827, Nature Publishing Group Year: 2016 Authors: Masamizu Y., Okada T., Kawasaki K., Ishibashi H., Yuasa S., Takeda S., Hasegawa I., Nakahara K. Title: Local and retrograde gene transfer into primate neuronal pathways via adeno-associated virus serotype 8 and 9. Journal: Neuroscience Year: 2011 Authors: Matsui T., Koyano KW., Koyama M., NAKAHARAKiyoshi, Takeda M., Ohashi Y., Naya Y., Miyashita Y. Title: MRI-based localization of electrophysiological recording sites within the cerebral cortex at single-voxel accuracy. Journal: Nature Methods Year: 2007 Authors: Koyama M., Hasegawa I., Osada T., Adachi Y., NAKAHARAKiyoshi, Miyashita Y. Title: Functional magnetic resonance imaging of macaque monkeys performing visually guided saccade tasks: Comparison of cortical eye fields with humans. Journal: Neuron Year: 2004 Authors: NAKAHARAKiyoshi, Hayashi T., Konishi S., MIyashita Y. Title: Functional MRI of macaque monkeys performing a cognitive set-shifting task. Journal: Science Year: 2002 Authors: Tomita H., Ohbayashi M., NAKAHARAKiyoshi, Hasegawa I., Miyashita Y. Title: Top-down signal from prefrontal cortex in executive control of memory retrieval. Journal: Nature Year: 1999 Authors: Konishi S., Nakajima K., Uchida I., Kameyama M., NAKAHARAKiyoshi, Sekihara K., Miyashita Y. Title: Transient activation of inferior prefrontal cortex during cognitive set shifting. Journal: Nature Neuroscience Year: 1998
Grants-in-Aid for Scientific Research from the Japanese government	Project title: Research on memory retrieval mechanisms in the primate medial temporal lobe using high-density electrocorticography Category: Grant-in-Aid for Scientific Research (B) Project number: 25282249 Project period: 2013-2016 Total budget amount: 19,760,000 yen Keywords: Project title: Exploration of relationship between gamma-band activity and memory function in the temporal lobe Category: Grant-in-Aid for Challenging Exploratory Research Project number: 25560433 Project period: 2013-2015 Total budget amount: 3,770,000 yen Keywords: Project title: Exploration of brain activation patterns as memory engrams Category: Grant-in-Aid for Challenging Exploratory Research Project number: 15K12777 Project period: 2015-2017 Total budget amount: 3,640,000 yen Keywords: Project title: Investigation of functional roles of ongoing brain activity in cognition and consciousness Category: Grant-in-Aid for Scientific Research (A) Project number: 17H00891 Project period: 2017-2020 Total budget amount: 43,420,000 yen Keywords: Project title: Reactivation of memory representation by pattern stimulation of the brain Category: Grant-in-Aid for Challenging Research (Pioneering) Project number: 17H06268 Project period: 2017-2019 Total budget amount: 26,000,000 yen Keywords:

Research papers

Authors: Ryutaro KASEDO, Atsuhiko IIJIMA, Kiyoshi NAKAHARA, Yusuke ADACHI, Fumitaka HOMAE, Ryu-ichiro HASHIMOTO, Isao HASEGAWA
Title: The Role of Dual-step Linguistic Structuring in Self-paced Reading Rhythms
Journal: Advanced Biomedical Engineering, Vol. 13, pp. 343-353, Japanese Society for Medical and Biological Engineering
Year: 2024
Authors: Moe Okayasu, Tensei Inukai, Daiki Tanaka, Kaho Tsumura, Reiko Shintaki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura
Title: The Stroop effect involves an excitatory–inhibitory fronto–cerebellar loop
Journal: Nature Communications, Vol. 14, No. 27, Springer Nature
Year: 2023
Authors: TSUMURA Kaho , SHINTAKI Reiko , TAKEDA Masaki, CHIKAZOE Junichi, NAKAHARA Kiyoshi, JIMURA Koji
Title: Perceptual uncertainty alternates top-down and bottom-up fronto-temporal network signaling during response inhibition
Journal: The Journal of Neuroscience, Vol. 42, No. 22, pp. 4567-4579, Society for Neuroscience
Year: 2022
Authors: Hisashi Tanigawa, Kei Majima, Ren Takei, Keisuke Kawasaki, Hirohito Sawahata, Kiyoshi Nakahara, Atsuhiko Iijima, Takafumi Suzuki, Yukiyasu Kamitani, Isao Hasegawa
Title: Decoding distributed oscillatory signals driven by memory and perception in the prefrontal cortex
Journal: Cell Reports, Vol. 39, No. 2, p. 110676, CellPress
Year: 2022
Authors: Teppei Matsui, Yoshiki Hattori, Kaho Tsumura, Ryuta Aoki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura
Title: Executive control by fronto-parietal activity explains counterintuitive decision behavior in complex value-based decision-making.
Journal: NeuroImage, Vol. 249, p. 118892, Elsevier
Year: 2022
Authors: Kaho Tsumura, Keita Kosugi, Yoshiki Hattori, Ryuta Aoki, Masaki Takeda, Kiyoshi Nakahara, Koji Jimura
Title: Reversible Fronto-occipitotemporal Signaling Complements Task Encoding and Switching under Ambiguous Cues.
Journal: Cerebral Cortex, Vol. bhab324, Oxford Academic
Year: 2021
Authors: Ruedeerat Keerativittayayut, Ryuta Aoki, Taghizadeh Sarabi Mitra, Koji Jimura, Kiyoshi Nakahara
Title: Large-scale network integration in the human brain tracks temporal fluctuations in memory encoding performance.
Journal: eLife, Vol. doi: 10.7554/eLife.32696., eLife Sciences Publications
Year: 2018
Authors: NAKAHARA Kiyoshi, ADACHI Ken, KAWASAKI Keisuke, MATSUO Takeshi, SAWAHATA Hirohito, MAJIMA Kei, TAKEDA Masaki, SUGIYAMA Sayaka, IIJIMA Atsuhiko, TANIGAWA Hisashi, SUZUKI Takafumi, KAMITANI Yukiyasu, HASEGAWA Isao
Title: Associative-memory representations emerge as shared spatial patterns of theta activity spanning the primate temporal cortex
Journal: Nature Communications, Vol. doi: 10.1038/ncomms11827, Nature Publishing Group
Year: 2016
Authors: Masamizu Y., Okada T., Kawasaki K., Ishibashi H., Yuasa S., Takeda S., Hasegawa I., Nakahara K.
Title: Local and retrograde gene transfer into primate neuronal pathways via adeno-associated virus serotype 8 and 9.
Journal: Neuroscience
Year: 2011
Authors: Matsui T., Koyano KW., Koyama M., NAKAHARAKiyoshi, Takeda M., Ohashi Y., Naya Y., Miyashita Y.
Title: MRI-based localization of electrophysiological recording sites within the cerebral cortex at single-voxel accuracy.
Journal: Nature Methods
Year: 2007
Authors: Koyama M., Hasegawa I., Osada T., Adachi Y., NAKAHARAKiyoshi, Miyashita Y.
Title: Functional magnetic resonance imaging of macaque monkeys performing visually guided saccade tasks: Comparison of cortical eye fields with humans.
Journal: Neuron
Year: 2004
Authors: NAKAHARAKiyoshi, Hayashi T., Konishi S., MIyashita Y.
Title: Functional MRI of macaque monkeys performing a cognitive set-shifting task.
Journal: Science
Year: 2002
Authors: Tomita H., Ohbayashi M., NAKAHARAKiyoshi, Hasegawa I., Miyashita Y.
Title: Top-down signal from prefrontal cortex in executive control of memory retrieval.
Journal: Nature
Year: 1999
Authors: Konishi S., Nakajima K., Uchida I., Kameyama M., NAKAHARAKiyoshi, Sekihara K., Miyashita Y.
Title: Transient activation of inferior prefrontal cortex during cognitive set shifting.
Journal: Nature Neuroscience
Year: 1998

Grants-in-Aid for Scientific Research from the Japanese government

Project title: Research on memory retrieval mechanisms in the primate medial temporal lobe using high-density electrocorticography
Category: Grant-in-Aid for Scientific Research (B)
Project number: 25282249
Project period: 2013-2016
Total budget amount: 19,760,000 yen
Keywords:
Project title: Exploration of relationship between gamma-band activity and memory function in the temporal lobe
Category: Grant-in-Aid for Challenging Exploratory Research
Project number: 25560433
Project period: 2013-2015
Total budget amount: 3,770,000 yen
Keywords:
Project title: Exploration of brain activation patterns as memory engrams
Category: Grant-in-Aid for Challenging Exploratory Research
Project number: 15K12777
Project period: 2015-2017
Total budget amount: 3,640,000 yen
Keywords:
Project title: Investigation of functional roles of ongoing brain activity in cognition and consciousness
Category: Grant-in-Aid for Scientific Research (A)
Project number: 17H00891
Project period: 2017-2020
Total budget amount: 43,420,000 yen
Keywords:
Project title: Reactivation of memory representation by pattern stimulation of the brain
Category: Grant-in-Aid for Challenging Research (Pioneering)
Project number: 17H06268
Project period: 2017-2019
Total budget amount: 26,000,000 yen
Keywords:

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Social activities

Committee roles	Academic editor, Editorial board, PLOS ONE, PLOS, 2019- Academic editor, Editorial board, PLOS ONE, PLOS, 2019- Review Editor on the Editorial Board of Brain Health and Clinical Neuroscience, Frontiers in Human Neuroscience, 2023- "Neuroscience of Eating: From Physiology to Pathology", Chief topic editor, Frontiers in Human Neuroscience, Frontiers in Human Neuroscience, 2019-2022 Academic editor, Editorial board, PLOS ONE, PLOS, 2018- Review editor, Editorial board, Frontiers in Human Neuroscience, Frontiers in Neuroscience, 2018-2023
Published books	Visual Associative Memory. In: Squire L. R. (ed.) Encyclopedia of Neuroscience., 2008

Committee roles

Academic editor, Editorial board, PLOS ONE, PLOS, 2019-
Academic editor, Editorial board, PLOS ONE, PLOS, 2019-
Review Editor on the Editorial Board of Brain Health and Clinical Neuroscience, Frontiers in Human Neuroscience, 2023-
"Neuroscience of Eating: From Physiology to Pathology", Chief topic editor, Frontiers in Human Neuroscience, Frontiers in Human Neuroscience, 2019-2022
Academic editor, Editorial board, PLOS ONE, PLOS, 2018-
Review editor, Editorial board, Frontiers in Human Neuroscience, Frontiers in Neuroscience, 2018-2023

Published books

Visual Associative Memory. In: Squire L. R. (ed.) Encyclopedia of Neuroscience., 2008

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