Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

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Vagal nerve activity as a moderator of brain-immune relationships

Ohira H., Matsunaga M., Osumi T., Fukuyama S., Shinoda J., Yamada J., Gidron Y.

Journal of Neuroimmunology Vol. 260 ( 1-2 ) page： 28 - 36 2013.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Neuroimmunology

We investigated whether vagal tone, as assessed by heart rate variability (HRV), moderates the neural correlates of immune and physiological responses to acute stress. Participants with low and high baseline HRV underwent a reversal learning task as an acute stressor. Natural killer cells, norepinephrine, and adrenocorticotropic hormone in peripheral blood changed with acute stress in the high HRV group only. Activity in the prefrontal cortex and striatum correlated with the immune and physiological indices in the high HRV group. High vagal tone may reflect more flexible top-down brain regulation of immune and physiological activity. © 2013 Elsevier B.V.

DOI： 10.1016/j.jneuroim.2013.04.011

Scopus

Eye-Blink Behaviors in 71 Species of Primates Reviewed

Hideoki Tada, Yasuko Omori, Kumi Hirokawa, Hideki Ohira, Masaki Tomonaga

PLOS ONE Vol. 8 ( 5 ) page： e66018 2013.5

Language：English Publishing type：Research paper (scientific journal) Publisher：PUBLIC LIBRARY SCIENCE

The present study was performed to investigate the associations between eye-blink behaviors and various other factors in primates. We video-recorded 141 individuals across 71 primate species and analyzed the blink rate, blink duration, and "isolated'' blink ratio (i.e., blinks without eye or head movement) in relation to activity rhythms, habitat types, group size, and body size factors. The results showed close relationships between three types of eye-blink measures and body size factors. All of these measures increased as a function of body weight. In addition, diurnal primates showed more blinks than nocturnal species even after controlling for body size factors. The most important findings were the relationships between eye-blink behaviors and social factors, e.g., group size. Among diurnal primates, only the blink rate was significantly correlated even after controlling for body size factors. The blink rate increased as the group size increased. Enlargement of the neocortex is strongly correlated with group size in primate species and considered strong evidence for the social brain hypothesis. Our results suggest that spontaneous eye-blinks have acquired a role in social communication, similar to grooming, to adapt to complex social living during primate evolution.

DOI： 10.1371/journal.pone.0066018

Web of Science

Pro-inflammatory cytokine predicts reduced rejection of unfair financial offers

Ohira H., Osumi T., Matsunaga M., Yamakawa K.

Neuroendocrinology Letters Vol. 34 ( 1 ) page： 47 - 51 2013.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Neuroendocrinology Letters

OBJECTIVES: This study aimed to examine one of biological correlates, proinflammatory cytokine, in rejection of unfair financial offers in the Ultimatum Game (UG), where the division of a sum of money is proposed and the player can accept or reject this offer. METHODS: Nineteen participants played 20 trials of the UG as responders, and they were proposed unfair offers in a half of the trials. Baseline levels of several pro-inflammatory and anti-inflammatory cytokines, subjective happiness, and depression of them were measured. RESULTS: Participants with higher levels of the pro-inflammatory cytokine, interleukin (IL)-6 rejected fewer unfair offers. This effect of IL-6 levels on decision-making was independent from other pro-inflammatory cytokines, anti-inflammatory cytokines, subjective happiness, and depression. CONCLUSIONS: These results suggested that chronic higher levels of IL-6 might affect functions of neural regions related to decision making, and thus can modulate rejection of unfair offers. © 2013 Neuroendocrinology Letters.

Scopus

VAGAL TONE MODULATES FUNCTIONAL BRAIN-BODY ASSOCIATION

Ohira Hideki, Matsunaga Masahiro, Osumi Takahiro, Gidron Yori

PSYCHOSOMATIC MEDICINE Vol. 75 ( 3 ) page： A108 - A108 2013.4

PAVLOVIAN-INSTRUMENTAL TRANSFER BY ACUTE STRESS IN DECISION MAKING

Yamakawa Kaori, Matsunaga Masahiro, Isowa Tokiko, Ohira Hideki

PSYCHOSOMATIC MEDICINE Vol. 75 ( 3 ) page： A112 - A112 2013.4

慢性ストレスと意思決定 Reviewed

大平英樹

ストレス科学研究 Vol. 28 page： 8-15 2013

Pro-inflammatory cytokine predicts reduced rejection of unfair financial offers. Reviewed

Ohira,H., Osumi,T., Matsunaga,M., & Yamakawa,K.

Neuroendocrinology Letters ( 34 ) page： 47-51 2013

Brain-Immune Interaction Accompanying Odor-evoked Autobiographic Memory. Reviewed

Matsunaga, M., Bai, Y., Yamakawa, K., Toyama, A., Kashiwagi, M., Fukuda, K., Oshida, A., Sanada, K., Fukuyama, S., Shinoda, J., Yamada, J., Sadato, N., & Ohira, H.

PLoS ONE Vol. 8 ( 8 ) page： e72523 2013

Eye-Blink Behaviors in 71 Species of Primates. Reviewed

Tada, H., Omori, Y., Hirokawa, K., Ohira, H., & Tomonaga, M.

PLoS ONE Vol. 8 page： e66018 2013

Modulation of Emotion by Cognitive Activity. Reviewed

Iida, S., Tanabe, C, H., Nakao, T., & Ohira, H.

Psychological Topics Vol. 22 ( 2 ) page： 205-219 2013

The effect of music on psychological and physiological stress

Nakashima Mana, Ebihara Naokuni, Nishijo Hisao, Ohira Hideki

Journal of Human Environmental Studies Vol. 11 ( 1 ) page： 19 - 25 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society for Human Environmental Studies

Many people regularly listen to music for stress reduction and for healing. A number of studies have investigated the effects of music on psychological and physiological states. However, there have been few studies to examine the effects of music on recovery from stress states. Therefore, the present study investigated how psychophysiological stress states can be recovered through listening to music. Sixteen participants (3 men and 13 women) were assigned both to a music-condition and to a no music-condition, and performed the Trier Social Stress Test (TSST). The psychological parameters, stress hormones (salivary cortisol and salivary chromogranin A) and autonomic indices (heart rate and heart rate variability; HRV) were measured. All parameters, except autonomic indices, significantly increased after the TSST. Psychological parameters and salivary cortisol showed more significant reduction in participants listening to music than in participants who did not listen to music. When participants listened to music, the heart rate increased and the high frequency of HRV decreased. There was no change in salivary chromogranin A and low frequency/high frequency ratio (LF/HF ratio) of HRV. These results suggest that listening to music led to sympathetic nervous activation rather than parasympathetic nervous activation. Within physiological parameters, salivary cortisol corresponded to psychological stress state most. It could be interpreted that uplifting music made sympathetic nervous activation and led to exultation or excitement rather than to relaxation. Therefore, the autonomic indices would also be corresponding to psychological stress states.

DOI： 10.4189/shes.11.19

CiNii Research

身体の覚醒の低下はサイコパシーとリスク選択を結びつけるか:―媒介分析による検討―

大隅尚広, 梅田聡, 大平英樹

感情心理学研究 Vol. 21 ( Supplement ) page： 34 - 34 2013

Chronic stress and decision-making

Ohira Hideki

Stress Science Research Vol. 28 ( 0 ) page： 8 - 15 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Public Health Research Foundation

Chronic stress affects decision-making, especially shifts dominant modes of decision-making from goal-directed action to habit action. Animal studies have revealed that atrophy of the prelimbic and inflalimbic prefrontal cortex and dorsomedial striatum as well as hypertrophy of the dorsolateral striatum by chronic stress mediates the alteration of decision-making. We expanded this finding to humans by a neuroimaging study and further suggested that chronic stress causes dysfunctional regulation of physiological responses by the brain. Another study using functional and structural neuroimaging replicated these findings and further showed that stress-caused alterations of decision-making and the structure and function of the brain can be reversible once individuals are released from stress. Stress-induced habit action might mediate the association between chronic stress and diseases by leading to unhealthy behaviors such as over-consumption of tobacco and alcohol, less physical activity, and addition to drugs. Further studies are needed to clarify detailed mechanisms by which chronic stress causes alterations of the brain and decision-making, and possibility of effective preventions for maladaptive influences on health.<br>

DOI： 10.5058/stresskagakukenkyu.28.8

CiNii Research

慢性ストレスと意思決定 Reviewed

大平英樹

ストレス科学研究 Vol. 28 page： 8-15 2013

事象関連脳電位(ERP)を用いた実行系機能課題遂行後の感情処理の検討(日本基礎心理学会第31回大会,大会発表要旨)

飯田沙依亜, 木村元洋, 木村健太, 白宇, 大平英樹

基礎心理学研究 Vol. 31 ( 2 ) page： 220 - 220 2013

Psychopathic trait and multidimensional empathy

Oba Takeyuki, Nishimatsu Yoshiko, Ohira Hideki

Journal of Human Environmental Studies Vol. 11 ( 1 ) page： 13 - 18 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society for Human Environmental Studies

One of the features in psychopathy is a deficit of empathy. Without empathy, psychopathy can not inhibit to harm others. However, previous studies revealed that offenders had more empathic traits than non-offenders. Empathy is defined as multidimensional components (e.g.; cognitive empathy and emotional empathy), but not as a unitary. Generally, psychopathy is consisted of two subcomponents: Primary Psychopathy (PP; features of callousness and lack of empathy) and Secondary Psychopathy (SP; features of impulsiveness and uncontrollability to own behaviours). Here, we hypothesized that psychopaths, particularly who are dominant in PP, have less empathic traits both in cognitive and emotional domains, on the other hand, SP is more linked with emotional empathic trait, but less linked with cognitive one. Furthermore, we investigated not only to relate psychopathic traits and multidimensional empathy, but also to validate a Japanese version of the Primary and Secondary Psychopathy Scales (PSPS), using both Machiavellianism (MACH) scale and Buss-Perry Aggression Questionnaire (BAQ). Results indicated that correlations between PP and MACH and between PP and BAQ subscales of physical aggression and verbal aggression were higher than correlations between SP and MACH and BAQ, while correlations between SP and BAQ subscales of anger and hostility were higher than correlations between PP and the BAQ subscales. About empathy, consistent with our hypothesis, PP was linked with less empathy both in cognitive and emotional domains, whereas SP was linked with more emotional empathy, but was linked with less cognitive empathy. This reveals that PSPS dissociated PP and SP well. Although there remain some problems, PSPS is a useful scale for measurement of psychopathic traits.

DOI： 10.4189/shes.11.13

CiNii Research

Correlation between transition of salivary -amylase and efficacy of self-statement in speech

Kunihashi Takahiro, Hira Shinji, Ohira Hideki

Journal of Human Environmental Studies Vol. 11 ( 1 ) page： 7 - 12 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society for Human Environmental Studies

Recent studies indicated that salivary alpha-amylase (sAA) is useful not only as a surrogate biological marker for sympathetic nervous activity, but also as a non-invasive index of psychological stress. Some psychophysiological studies have revealed significant increases of aAA during acute stress induces by experimental stressors such as the Trier Social Stress Test (TSST), which were comparable to other endocrinological indices such as salivary cortisol. However, association between change of sAA and performance of public speech within the TSST remain unclear. Thus, in the present study, we recruited 10 participants (mean age = 20.60, SD = 0.80 yrs) to investigate the associations between transition of sAA and performance of speech. SAA and pulsatile heart rate were measured three times before, and three times after the social stress challenge. SAA was measured with a portable sAA biosensor (Salivary amylase monitor; NIPRO, Japan). The Profile of Mood State (POMS) test and Visual Analogue Scale (VAS) were administered to participants after the TSST protocol. An ANOVA revealed a significant increase of sAA after the task. However, no significant change of pulsatile heart rate was observed. Neither a correlation between sAA and VAS nor a correlation between POMS and VAS was observed. These results suggest that sAA induced by the TSST would be a reliable biomarker of acute stress. However, associations between sAA response and performance of public speech during the TSST still remain under question to be further explored.

DOI： 10.4189/shes.11.7

CiNii Research

Reciprocal Ascription of Intentions Realized in Robot-human Interaction. Reviewed

Shoji Nagataki, Masayoshi Shibata, Takeshi Konno, Takashi Hashimoto, Hideki Ohira

Proceedings of the 35th Annual Meeting of the Cognitive Science Society, CogSci 2013, Berlin, Germany, July 31 - August 3, 2013 2013

Pro-inflammatory cytokine predicts reduced rejection of unfair financial offers

Ohira Hideki, Osumi Takahiro, Matsunaga Masahiro, Yamakawa Kaori

NEUROENDOCRINOLOGY LETTERS Vol. 34 ( 1 ) page： 47 - 51 2013

Pro-inflammatory cytokine predicts reduced rejection of unfair financial offers Reviewed

Hideki Ohira, Takahiro Osumi, Masahiro Matsunaga, Kaori Yamakawa

NEUROENDOCRINOLOGY LETTERS Vol. 34 ( 1 ) page： 47 - 51 2013

Language：English Publishing type：Research paper (scientific journal) Publisher：MAGHIRA & MAAS PUBLICATIONS

OBJECTIVES: This study aimed to examine one of biological correlates, pro-inflammatory cytokine, in rejection of unfair financial offers in the Ultimatum Game (UG), where the division of a sum of money is proposed and the player can accept or reject this offer.
METHODS: Nineteen participants played 20 trials of the UG as responders, and they were proposed unfair offers in a half of the trials. Baseline levels of several pro-inflammatory and anti-inflammatory cytokines, subjective happiness, and depression of them were measured.
RESULTS: Participants with higher levels of the pro-inflammatory cytokine, interleukin (IL)-6 rejected fewer unfair offers. This effect of IL-6 levels on decision-making was independent from other pro-inflammatory cytokines, anti-inflammatory cytokines, subjective happiness, and depression.
CONCLUSIONS: These results suggested that chronic higher levels of IL-6 might affect functions of neural regions related to decision making, and thus can modulate rejection of unfair offers.

Web of Science

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Papers - OHIRA, Hideki