Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

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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. Reviewed

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

Neuroscience Letters page： 211-215 2010.1

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

NEUROSCIENCE LETTERS Vol. 468 ( 3 ) page： 211 - 215 2010.1

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER IRELAND LTD

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. (C) 2009 Elsevier Ireland Ltd. All rights reserved.

DOI： 10.1016/j.neulet.2009.10.093

Web of Science

Brain and autonomic association accompanying stochastic decision-making Reviewed

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

NEUROIMAGE Vol. 49 ( 1 ) page： 1024 - 1037 2010.1

Language：English Publishing type：Research paper (scientific journal) Publisher：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. Reviewed

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

NeuroImage Vol. 49 page： 1024-1037 2010

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

Osumi, T., & Ohira, H.

Personality and Individual Differences Vol. 49 page： 451-456 2010

The somatic marker revisited: brain and body in emotional decision making. Reviewed

Ohira, H.

Emotion Review Vol. 2 page： 245-249 2010

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

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 Vol. 36 page： 455-469 2010

EEG Evidence of Face-specific Visual Self-Representation. Reviewed

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

NeuroImage Vol. 50 page： 1666-1675 2010

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

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

Neuroscience Letters ( 482 ) page： 220-224 2010

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 Vol. 17 ( 3 ) page： 221 2010

Neural basis of adaptation to social environment

OSUMI Takahiro, OHIRA Hideki

Japanese Journal of Physiological Psychology and Psychophysiology Vol. 28 ( 1 ) page： 57 - 66 2010

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Physiological Psychology and Psychophysiology

Neural basis of adaptation to social environment Remarkable upgrading of neuroscience has provided useful methods and knowledge in order to understand neurophysiological grounds of theories in social science. Previous studies focusing on the social exchange theory have revealed that social preference for altruistic behavior or norm compliance stems from brain regions related with reward prediction or risk evaluation, which suggests that a basic biological mechanism of adaptive behaviors applies to the case of social behaviors. According to this background, the current review summarizes empirical findings that have shown neural basis of social behaviors in humans and discuss its adaptive roles from a perspective of evolutional theory. Especially, we focus on reciprocal exchanges with others as a source of social behaviors acquired by the adaptive mechanism of brain.

DOI： 10.5674/jjppp.28.57

CiNii Research

Decision making and the medial prefrontal cortex function in social context

NAKAO Takashi, OHIRA Hideki, NORTHOFF Georg

Japanese Journal of Physiological Psychology and Psychophysiology Vol. 28 ( 1 ) page： 45 - 55 2010

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Physiological Psychology and Psychophysiology

Most experimental studies of decision making have specifically examined situations in which one correct answer exists, which is either high- or low-predictable. Low predictability of the outcome, as for instance manipulated by probability or social context, has been described psychologically by the concept of uncertainty. Nevertheless, unlike the cases described above, there are instances of decision making for which there is no correct answer at all. In this manuscript, we present a review and comparison of decision making studies with and without a correct answer with regard to their recruitment of various regions within the medial prefrontal cortex (MPFC). Our findings demonstrate neural overlap between decision making with a low-predictable correct answer and decision making without a correct answer, especially in the dorsomedial part of the MPFC. The results raise several questions about the concept of uncertainty and the function of the MPFC.

DOI： 10.5674/jjppp.28.45

CiNii Books

CiNii Research

Introduction of the special issue: Social Neuroscience

OHIRA Hideki

Japanese Journal of Physiological Psychology and Psychophysiology Vol. 28 ( 1 ) page： 1 - 4 2010

A dark side of the human mind: Affective dysfunction as a function of psychopathy

Osumi Takahiro, Ohira Hideki

JAPANESE JOURNAL OF RESEARCH ON EMOTIONS Vol. 18 ( 1 ) page： 2 - 14 2010

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPAN SOCIETY FOR RESEARCH ON EMOTIONS

This review summarizes empirical findings that have shown affective deficits of psychopathy. Previous studies have accounted for a failure of moral socialization in individuals with psychopathy in terms of low levels of fearfulness and empathy that may lead to an attenuated ability to inhibit deviant behaviors in response to punishments and distress cues from others. Both low-fear and low-empathy hypotheses have implied that a neural basis of psychopathy is a dysfunction of amygdala, a brain region of the center in affective processing. However, the affective dysfunction of psychopathy can also be associated with adaptive behaviors to maximize gains and minimize losses in some situations. Hence, we propose that psychopathy is one side of humans to shape a selfish strategy if necessary.

DOI： 10.4092/jsre.18.2

CiNii Research

Editorial

Ohira Hideki

THE JAPANESE JOURNAL OF RESEARCH ON EMOTIONS Vol. 17 ( 3 ) page： 189 - 189 2010