Publications

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2026

  1. Motivation under aversive conditions is regulated by a striatopallidal pathway in primates.Jung-min N. OH, Satoko Amemori, Ken-ichi Inoue, Kei Kimura, Masahiko Takada, Ken-ichi Amemori.Current Biology 36(3) 692-706.e6 February 2026 Peer-reviewed paper, Last author, Corresponding authorView Publications
  2. Functional distinctions between orbitofrontal cortex and anterior cingulate cortex subregions in decision-making and autonomic regulation.Georgios K. Papageorgiou, Ken-ichi Amemori, Daniel J. Gibson, Helen N. Schwerdt, Michelangelo Naim, Michelle C. Wang, Tomoko Yoshida, Jitendra Sharma, Urvashi Upadhyay, Guangyu Robert Yang, Ann M. Graybiel.Nature Communications 14th February 2026 Peer-reviewed paperView Publications

2025

  1. Bridge protein-mediated viral targeting of cells expressing endogenous μ-opioid G protein-coupled receptors in the mouse and monkey brain. Riki Kamaguchi, Satoko Amemori, Ken-ichi Amemori, Fumitaka Osakada. Neuroscience Research 213 35-50 April 2025 Peer-reviewed paperView Publications
  2. Neural mechanisms of confidence propagation in hierarchical partially observable decision-making. Risa Katayama, Wako Yoshida, Ken-ichi Amemori, Shin Ishii. iScience 28(7) 112782-112782 July 2025 Peer-reviewed paperView Publications
  3. Differential representation of motivation and affective judgment by neurons in the primate ventral striatum and ventral pallidum during approach-avoidance decision-making. Jung-min N. OH, Satoko Amemori, Masahiko Takada, Ken-ichi Amemori. Neuroscience Research 219 104955-104955 October 2025 Last author, Corresponding authorView Publications
  4. Circuit-based Approaches to Understanding the Anterior Cingulate Cortex (ACC). Daulton C. Myers, Joseph Simon, Jungmin OH, Katherine E. Kabotyanski, Satoka Fujimoto, Desmond J. Oathes, Peter H. Rudebeck, Ken-ichi Amemori, Sameer A. Sheth, Julie L. Fudge. The Journal of Neuroscience 45(46) e1311252025-e1311252025 12th November 2025 Peer-reviewed paper, InvitedView Publications
  5. Predictive coding in the primate brain: From visual to fronto-limbic systems. Ryo Ito, Satoko Amemori, Ken-ichi Amemori. Neuroscience Research 221 104972-104972 December 2025 Peer-reviewed paper, Invited, Last author, Corresponding authorView Publications

2024

  1. Cingulate microstimulation induces negative decision-making via reduced top-down influence on primate fronto-cingulo-striatal network.Satoko Amemori, Ann M. Graybiel, Ken-ichi Amemori.Nature Communications 15(1) 4201 17th May 2024 Peer-reviewed paper, Last author, Corresponding authorView Publications
  2. Electrophysiological Recordings and Electrical Microstimulation in Monkey pACC and cOFC During Approach-Avoidance Behavior. Georgios K. Papageorgiou, Daniel J. Gibson, Ken Amemori, Helen N. Schwerdt, Michelle C. Wang, Ann M. Graybiel. Biological Psychiatry 95(10) S26-S27 May 2024

2023

  1. Spatiotemporal expression patterns of anxiety disorder-associated genes. Kalyani B Karunakaran, Ken-ichi Amemori. Translational Psychiatry 13(1) 385-385 13th December 2023 Peer-reviewed paper, Corresponding authorView Publications

2022

  1. The Role of the Dorsal-Lateral Prefrontal Cortex in Reward Sensitivity During Approach-Avoidance Conflict. Camarin E Rolle, Mads L Pedersen, Noriah Johnson, Ken-ichi Amemori, Maria Ironside, Ann M Graybiel, Diego A Pizzagalli, Amit Etkin. Cerebral Cortex 32(6) 1269-1285 2022 Peer-reviewed paperView Publications
  2. Multiplexed action-outcome representation by striatal striosome-matrix compartments detected with a mouse cost-benefit foraging task. Bernard Bloem, Rafiq Huda, Ken-ichi Amemori, Alex S. Abate, Gayathri Krishna, Anna L. Wilson, Cody W. Carter, Mriganka Sur, Ann M. Graybiel. Nature Communications 13(1541) 1541-1541 2022 Peer-reviewed paperView Publications

2021

  1. Causal Evidence for Induction of Pessimistic Decision-Making in Primates by the Network of Frontal Cortex and Striosomes. Satoko Amemori, Ann M. Graybiel, Ken-ichi Amemori. Frontiers in Neuroscience 15 649167-649167 30th June 2021 Peer-reviewed paper, Last author, Corresponding authorView Publications
  2. Computational phenotyping of brain-behavior dynamics underlying approach-avoidance conflict in major depressive disorder. Mads L. Pedersen, Maria Ironside, Ken-ichi Amemori, Callie L. McGrath, Min S. Kang, Ann M. Graybiel, Diego A. Pizzagalli, Michael J. Frank. PLOS Computational Biology 17(5) e1008955-e1008955 10th May 2021 Peer-reviewed paperView Publications
  3. Chronic multi-modal monitoring of neural activity in rodents and primates. Helen N. Schwerdt, Dan J. Gibson, Kenichi Amemori, Lauren L. Stanwicks, Tomoko Yoshida, Michael J. Cima, Ann M. Graybiel. Integrated Sensors for Biological and Neural Sensing 11663 5th March 2021 Peer-reviewed paperView Publications
  4. Generalized and social anxiety disorder interactomes show distinctive overlaps with striosome and matrix interactomes. Kalyani B. Karunakaran, Satoko Amemori, N. Balakrishnan, Madhavi K. Ganapathiraju, Ken-ichi Amemori. Scientific Reports 11(1) 18392-18392 September 2021 Peer-reviewed paper, Last author, Corresponding authorView Publications

2020

  1. Dopamine and beta-band oscillations differentially link to striatal value and motor control. H N Schwerdt, K Amemori, D J Gibson, L L Stanwicks, T Yoshida, N P Bichot, S Amemori, R Desimone, R Langer, M J Cima, A M Graybiel. Science advances 6(39) September 2020 Peer-reviewed paperView Publications
  2. Approach-Avoidance Conflict in Major Depressive Disorder: Congruent Neural Findings in Humans and Nonhuman Primates. Maria Ironside, Ken-Ichi Amemori, Callie L McGrath, Mads Lund Pedersen, Min Su Kang, Satoko Amemori, Michael J Frank, Ann M Graybiel, Diego A Pizzagalli. Biological psychiatry 87(5) 399-408 2020 Peer-reviewed paper, First authorView Publications
  3. Microstimulation of primate neocortex targeting striosomes induces negative decision-making. Satoko Amemori, Ken-Ichi Amemori, Tomoko Yoshida, Georgios K Papageorgiou, Rui Xu, Hideki Shimazu, Robert Desimone, Ann M Graybiel. The European journal of neuroscience 51(3) 731-741 2020 Peer-reviewed paperView Publications
  4. Striatal Beta Oscillation and Neuronal Activity in the Primate Caudate Nucleus Differentially Represent Valence and Arousal Under Approach-Avoidance Conflict. Ken-Ichi Amemori, Satoko Amemori, Daniel J Gibson, Ann M Graybiel. Frontiers in neuroscience 14 89-89 2020 Peer-reviewed paper, First author, Corresponding authorView Publications

2019

  1. Predominant Striatal Input to the Lateral Habenula in Macaques Comes from Striosomes. Simon Hong, Satoko Amemori, Emily Chung, Daniel J Gibson, Ken-Ichi Amemori, Ann M Graybiel. Current biology 29(1) 51-61 7th January 2019 Peer-reviewed paperView Publications

2018

  1. Miniaturized neural system for chronic, local intracerebral drug delivery. Canan Dagdeviren, Khalil B Ramadi, Pauline Joe, Kevin Spencer, Helen N Schwerdt, Hideki Shimazu, Sebastien Delcasso, Ken-Ichi Amemori, Carlos Nunez-Lopez, Ann M Graybiel, Michael J Cima, Robert Langer. Science translational medicine 10(425) eaan2742 24th January 2018 Peer-reviewed paperView Publications
  2. Striatal Microstimulation Induces Persistent and Repetitive Negative Decision-Making Predicted by Striatal Beta-Band Oscillation. Ken-Ichi Amemori, Satoko Amemori, Daniel J Gibson, Ann M Graybiel. Neuron 99(4) 829-841 22nd August 2018 Peer-reviewed paperView Publications

2017

  1. Chronic Stress Alters Striosome-Circuit Dynamics, Leading to Aberrant Decision-Making. Alexander Friedman, Daigo Homma, Bernard Bloem, Leif G Gibb, Ken-Ichi Amemori, Dan Hu, Sebastien Delcasso, Timothy F Truong, Joyce Yang, Adam S Hood, Katrina A Mikofalvy, Dirk W Beck, Norah Nguyen, Erik D Nelson, Sebastian E Toro Arana, Ruth H Vorder Bruegge, Ki A Goosens, Ann M Graybiel. Cell 171(5) 1191-1205 16th November 2017 Peer-reviewed paperView Publications
  2. Long-term dopamine neurochemical monitoring in primates. Helen N Schwerdt, Hideki Shimazu, Ken-Ichi Amemori, Satoko Amemori, Patrick L Tierney, Daniel J Gibson, Simon Hong, Tomoko Yoshida, Robert Langer, Michael J Cima, Ann M Graybiel. Proceedings of the National Academy of Sciences 114(50) 13260-13265 12th December 2017 Peer-reviewed paperView Publications

2015

  1. A non-invasive head-holding device for chronic neural recordings in awake behaving monkeys. Satoko Amemori, Ken-Ichi Amemori, Margaret L Cantor, Ann M Graybiel. Journal of neuroscience methods 240 154-60 30th January 2015 Peer-reviewed paperView Publications
  2. Motivation and affective judgments differentially recruit neurons in the primate dorsolateral prefrontal and anterior cingulate cortex. Ken-ichi Amemori, Satoko Amemori, Ann M Graybiel. The Journal of neuroscience 35(5) 1939-53 4th February 2015 Peer-reviewed paper, First authorView Publications
  3. Habit Learning by Naive Macaques Is Marked by Response Sharpening of Striatal Neurons Representing the Cost and Outcome of Acquired Action Sequences. Theresa M Desrochers, Ken-ichi Amemori, Ann M Graybiel. Neuron 87(4) 853-68 19th August 2015 Peer-reviewed paperView Publications
  4. A Corticostriatal Path Targeting Striosomes Controls Decision-Making under Conflict. Alexander Friedman, Daigo Homma, Leif G Gibb, Ken-Ichi Amemori, Samuel J Rubin, Adam S Hood, Michael H Riad, Ann M Graybiel. Cell 161(6) 1320-33 4th June 2015 Peer-reviewed paperView Publications

2012

  1. Localized microstimulation of primate pregenual cingulate cortex induces negative decision-making. Ken-ichi Amemori, Ann M Graybiel. Nature neuroscience 15(5) 776-85 May 2012 Peer-reviewed paper, First authorView Publications
  2. A system for recording neural activity chronically and simultaneously from multiple cortical and subcortical regions in nonhuman primates. Joseph Feingold, Theresa M Desrochers, Naotaka Fujii, Ray Harlan, Patrick L Tierney, Hideki Shimazu, Ken-Ichi Amemori, Ann M Graybiel. Journal of neurophysiology 107(7) 1979-95 April 2012 Peer-reviewed paperView Publications
  3. Wearable wireless sensor platform for studying autonomic activity and social behavior in non-human primates. Richard Ribon Fletcher, Ken-ichi Amemori, Matthew Goodwin, Ann M Graybiel. Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2012 4046-9 2012 Peer-reviewed paperView Publications

2011

  1. Shifting responsibly: the importance of striatal modularity to reinforcement learning in uncertain environments. Ken-Ichi Amemori, Leif G Gibb, Ann M Graybiel. Frontiers in human neuroscience 5(MAY) 47-47 2011 Peer-reviewed paper, Invited, First authorView Publications

2006

  1. Rule-dependent shifting of sensorimotor representation in the primate prefrontal cortex. Ken-ichi Amemori, Toshiyuki Sawaguchi. The European journal of neuroscience 23(7) 1895-909 April 2006 Peer-reviewed paper, First authorView Publications
  2. Contrasting effects of reward expectation on sensory and motor memories in primate prefrontal neurons. Ken-ichi Amemori, Toshiyuki Sawaguchi. Cerebral cortex 16(7) 1002-15 July 2006 Peer-reviewed paper, First authorView Publications

2004

  1. Self-organization of delay lines by spike-time-dependent learning. Amemori, K.-I., Ishii, S. Neurocomputing 61(1-4) 291-316 2004 Peer-reviewed paper, First authorView Publications

2001

  1. Gaussian process approach to spiking neurons for inhomogeneous Poisson inputs.Amemori K, Ishii S.Neural Computation 13(12) 2763-2797 2001 Peer-reviewed paper, First authorView Publications
  2. Resonance of a Stochastic Spiking Neuron Mimicking the Hodgkin-Huxley Model.Amemori K, Ishii S.ICANN 2001 Proceedings 2130 1087-1094 2001 Peer-reviewed paper, First authorView Publications
  3. Gaussian Process Approach to Stochastic Spiking Neurons with Reset. Amemori K, Ishii S. ICANN 2001 Proceedings 2130 361-368 2001 Peer-reviewed paper, First authorView Publications

2000

  1. 精緻な時空間スパイク列の自己組織化学習と想起. 雨森 賢一, 石井 信. システム制御情報学会論文誌 13(7) 308-317 2000 Peer-reviewed paper, First authorView Publications
  2. Ensemble average and variance of a stochastic spiking neuron model. Amemori, K, Ishii, S. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E83-A(3) 575 2000 Peer-reviewed paper, First author

1998

  1. Unsupervised learning for sub-millisecond temporal coded sequence. Amemori K, Ishii S. JCIS 98 Proceedings 2 80-83 1998 Peer-reviewed paper, First author
  2. Self-organizing network learning of sub-millisecond temporal coded information. K Amemori, S Ishii. ICONIP'98 Proceedings 1285-1288 1998 Peer-reviewed paper, First author