研究者詳細 - 大平　英樹

論文 - 大平　英樹

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Self-knowledge reduces conflict by biasing one of plural possible answers

Nakao T., Mitsumoto M., Nashiwa H., Takamura M., Tokunaga S., Miyatani M., Ohira H., Katayama K., Okamoto A., Watanabe Y.

Personality and Social Psychology Bulletin 36 巻 ( 4 ) 頁： 455 - 469 2010年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Personality and Social Psychology Bulletin

The authors investigated whether self-knowledge has a function to reduce conflict by biasing one of two choices during occupational choice (e.g., Which occupation do you think you could do better?-dancer or chemist). In the three experiments, event-related brain potentials were recorded. Experiment 1 revealed that the amplitude of the conflict-related negativity (CRN) reflects strength of conflict during occupational choice. Results of Experiment 2 demonstrated that the CRN amplitude during occupational choice was smaller when self-knowledge was activated than when other-knowledge was activated. Experiment 3 showed that the CRN amplitude during occupational choice was decreased more when self-knowledge that biases one choice of occupation was activated than when self-knowledge that does not bias was activated. These results suggest that self-knowledge reduces conflict by biasing one of multiple choices in situations where two or more possible correct answers can be given © 2010 by the Society for Personality and Social Psychology, Inc.

DOI： 10.1177/0146167210363403

Scopus

Genetic variations in the serotonin transporter gene-linked polymorphic region influence attraction for a favorite person and the associated interactions between the central nervous and immune systems

Matsunaga Masahiro, Murakami Hiroki, Yamakawa Kaori, Isowa Tokiko, Kasugai Kunio, Yoneda Masashi, Kaneko Hiroshi, Fukuyama Seisuke, Shinoda Jun, Yamada Jitsuhiro, Ohira Hideki

NEUROSCIENCE LETTERS 468 巻 ( 3 ) 頁： 211 - 215 2010年1月

Matsunaga M., Murakami H., Yamakawa K., Isowa T., Kasugai K., Yoneda M., Kaneko H., Fukuyama S., Shinoda J., Yamada J., Ohira H.

Neuroscience Letters 468 巻 ( 3 ) 頁： 211 - 215 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Neuroscience Letters

Limbic system activation that occurs when a person experiences several emotions is primarily represented by the amygdala output that influences autonomic brainstem nuclei that control autonomic nervous function, thus modulating the endocrine and immune systems. Amygdala activity is modulated by the serotonin transporter gene-linked polymorphic region (5HTTLPR); however, whether variations in 5HTTLPR influence central nervous and immune activities in response to positive stimuli remains unclear. Here, we found that seeing a favorite person induced significantly higher amygdala activity in individuals with the 5HTTLPR SS genotype than in others. This activity was positively correlated with changes in the NK cell proportion among peripheral lymphocytes. Thus, 5HTTLPR influences attraction and the associated interactions between the central nervous and immune systems in affectively positive situations. © 2009 Elsevier Ireland Ltd. All rights reserved.

DOI： 10.1016/j.neulet.2009.10.093

Scopus

Brain and autonomic association accompanying stochastic decision-making.

Ohira H, Ichikawa N, Nomura M, Isowa T, Kimura K, Kanayama N, Fukuyama S, Shinoda J, Yamada J

NeuroImage 49 巻 ( 1 ) 頁： 1024 - 37 2010年1月

Brain and autonomic association accompanying stochastic decision-making

Ohira H., Ichikawa N., Nomura M., Isowa T., Kimura K., Kanayama N., Fukuyama S., Shinoda J., Yamada J.

NeuroImage 49 巻 ( 1 ) 頁： 1024 - 1037 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：NeuroImage

To examine the functional association between brain and autonomic activities accompanying decision-making, we simultaneously recorded regional cerebral blood flow using 15O-water positron emission tomography and event-related brain potentials (ERPs) time-locked to feedback of reward and punishment, as well as cardiovascular parameters, during a stochastic decision-making task. We manipulated the uncertainty of outcomes in the task; specifically, we compared a condition with high predictability of reward/punishment (contingent-reward condition) and a condition with low predictability of reward/punishment (random-reward condition). The anterior cingulate cortex (ACC) was commonly activated in both conditions. Compared with the contingent-reward condition, the orbitofrontal and right dorsolateral prefrontal cortices and dorsal striatum were activated in the random-reward condition, where subjects had to continue to seek contingency between stimuli and reward/punishment. Activation of these brain regions correlated with a positive component of ERPs locked to feedback signals (feedback-related positivity), which showed an association with behavioral decision-making in the contingent-reward condition. Furthermore, cardiovascular responses were attenuated in the random-reward condition, where continuous attention and contingency monitoring were needed, and such attenuation of cardiovascular responses was mediated by vagal activity that was governed by the rostral ACC. These findings suggest that the prefrontal-striatal network provides a neural basis for decision-making and modulation over the peripheral autonomic activity accompanying decision-making. © 2009 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.neuroimage.2009.07.060

Scopus

Brain and autonomic association accompanying stochastic decision-making

Ohira Hideki, Ichikawa Naho, Nomura Michio, Isowa Tokiko, Kimura Kenta, Kanayama Noriaki, Fukuyama Seisuke, Shinoda Jun, Yamada Jitsuhiro

NEUROIMAGE 49 巻 ( 1 ) 頁： 1024 - 1037 2010年1月

Matsunaga M, Murakami H, Yamakawa K, Isowa T, Kasugai K, Yoneda M, Kaneko H, Fukuyama S, Shinoda J, Yamada J, Ohira H.

Neuroscience Letters 頁： 211-215 2010年1月

Masahiro Matsunaga, Hiroki Murakami, Kaori Yamakawa, Tokiko Isowa, Kunio Kasugai, Masashi Yoneda, Hiroshi Kaneko, Seisuke Fukuyama, Jun Shinoda, Jitsuhiro Yamada, Hideki Ohira

NEUROSCIENCE LETTERS 468 巻 ( 3 ) 頁： 211 - 215 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER IRELAND LTD

DOI： 10.1016/j.neulet.2009.10.093

Web of Science

Brain and autonomic association accompanying stochastic decision-making 査読有り

Hideki Ohira, Naho Ichikawa, Michio Nomura, Tokiko Isowa, Kenta Kimura, Noriaki Kanayama, Seisuke Fukuyama, Jun Shinoda, Jitsuhiro Yamada

NEUROIMAGE 49 巻 ( 1 ) 頁： 1024 - 1037 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE

To examine the functional association between brain and autonomic activities accompanying decision-making, we simultaneously recorded regional cerebral blood flow using (15)O-water positron emission tomography and event-related brain potentials (ERPs) time-locked to feedback of reward and punishment, as well as cardiovascular parameters, during a stochastic decision-making task. We manipulated the uncertainty Of Outcomes in the task; specifically, we compared a condition with high predictability of reward/punishment (contingent-reward condition) and a condition with low predictability of reward/punishment (random-reward condition). The anterior cingulate cortex (ACC) was commonly activated in both conditions. Compared with the contingent-reward condition, the orbitofrontal and right dorsolateral prefrontal cortices and dorsal striatum were activated in the random-reward condition, where subjects had to continue to seek contingency between stimuli and reward/punishment. Activation of these brain regions correlated with a positive component of ERPs locked to feedback signals (feedback-related positivity), which showed an association with behavioral decision-making in the contingent-reward condition. Furthermore, cardiovascular responses were attenuated in the random-reward condition, where continuous attention and contingency monitoring were needed, and such attenuation of cardiovascular responses was mediated by vagal activity that was governed by the rostral ACC. These findings suggest that the prefrontal-striatal network provides a neural basis for decision-making and modulation over the peripheral autonomic activity accompanying decision-making. (C) 2009 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.neuroimage.2009.07.060

Web of Science

Brain and autonomic association accompanying stochastic decision-making. 査読有り

Ohira, H., Ichikawa, N., Nomura, M., Isowa, T., Kimura, K., Kanayama, N.,Fukuyama, S., Shinoda, J., & Yamada, J.

NeuroImage 49 巻頁： 1024-1037 2010年

The positive side of psychopathy: Emotional detachment in psychopathy and rational decision-making in the ultimatum game. 査読有り

Osumi, T., & Ohira, H.

Personality and Individual Differences 49 巻頁： 451-456 2010年

The somatic marker revisited: brain and body in emotional decision making. 査読有り

Ohira, H.

Emotion Review 2 巻頁： 245-249 2010年

Self-knowledge reduces conflict by biasing one of plural possible answers. 査読有り

Nakao, T., Mitsumoto, M., Nashiwa,H., Takamura,M., Tokunaga, S.,Miyatani,M., Ohira, H., Katayama, K., Okamoto, A., & Watanabe, Y.

Personality and Social Psychology Bulletin 36 巻頁： 455-469 2010年

EEG Evidence of Face-specific Visual Self-Representation. 査読有り

Miyakoshi, M., Kanayama, N., Iidaka, T., Ohira, H.

NeuroImage 50 巻頁： 1666-1675 2010年

Medial prefrontal cortex - dorsal anterior cingulate cortex connectivity during behavior selection without an objective correct answer. 査読有り

Nakao, T., Osumi, T., Ohira, H., Kasuya, Y., Shinoda, J., Yamada, J., & Northoff, G.

Neuroscience Letters ( 482 ) 頁： 220-224 2010年

認知課題への取り組みが後続する不快画像の感情価評定に及ぼす影響

飯田沙依亜, 中尾敬, 太平英樹

感情心理学研究 17 巻 ( 3 ) 頁： 221 2010年

社会環境への適応を果たす脳神経基盤

大隅尚広, 大平英樹

生理心理学と精神生理学 28 巻 ( 1 ) 頁： 57 - 66 2010年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：日本生理心理学会

神経科学の目覚ましい発展は, 社会科学における理論に関する神経生理学的背景を理解する上で有効な手段や知見を提供してきた。社会的交換理論に関しては, これまでの研究により利他行動や規範の遵守に関する社会的選好が報酬予期やリスク評価に関連する脳領域の活動を基盤としていることが明らかにされた。この事実は, 一般的な適応的行動をもたらす生物学的基盤が社会的行動においても適用されるということを示唆する。このような背景から, 本論では, ヒトの社会的意思決定の神経基盤を示す実証的知見を概観し, さらにその適応的役割について進化理論の観点から論ずる。特に, 脳の適応メカニズムが形成する社会的行動の情報源の一つとして, 他者との互恵的関係に着目する。

DOI： 10.5674/jjppp.28.57

CiNii Research

社会的事態における意思決定と内側前頭前皮質機能

中尾敬, 大平英樹, Georg Northoff

生理心理学と精神生理学 28 巻 ( 1 ) 頁： 45 - 55 2010年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：日本生理心理学会

多くの意思決定研究では予測しやすいもしくは予測しにくい一つの正答がある事態について検討がなされてきた。意思決定に伴う結果が確率的に変化する, もしくは他者の決定により変化するために予測困難な事態(予測可能性が低い事態)は不確実下における意思決定として研究がなされてきた。このような意思決定とは異なり, 全く正答の存在しない事態における意思決定というものも存在する。本論文では, 一つの正答のある, そして正答のない事態における意思決定研究をレビューし, それらの研究において観察されている内側前頭前皮質内の活動部位の違いを比較した。その結果, 一つの予測可能性の低い正答のある意思決定と正答のない意思決定の両方で内側前頭前皮質の上部に活動が認められていることが明らかとなった。このことは不確実性という概念の再考とMPFCの機能についての示唆を与えるものである。

DOI： 10.5674/jjppp.28.45

CiNii Books

CiNii Research

特集「社会神経科学」序文

大平英樹

生理心理学と精神生理学 28 巻 ( 1 ) 頁： 1 - 4 2010年

心の闇の側面―サイコパシーにおける感情の機能低下―

大隅尚広, 大平英樹

感情心理学研究 18 巻 ( 1 ) 頁： 2 - 14 2010年

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