Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

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Regulation of lymphocytes redistribution via autonomic nervous activity during stochastic learning

Kimura K., Ohira H., Isowa T., Matsunaga M., Murashima S.

Brain, Behavior, and Immunity Vol. 21 ( 7 ) page： 921 - 934 2007.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Brain, Behavior, and Immunity

Several studies reported that redistribution of lymphocyte subsets, especially CD3-CD16+CD56+ natural killer (NK) cells, was elicited by acute psychological stress tasks. It is known that lymphocyte redistribution was regulated based on active or passive emotional coping strategies, which can be elicited dependent on controllability of a stressor. Controllability can be evaluated gradually by learning of a contingency between actions and outcomes. Therefore, lymphocyte redistribution can be determined by learning of the contingency. To examine this issue, we used a stochastic learning task as an acute stress task and divided twenty healthy participants into reinforcement or yoked groups. Between the two groups, only whether they could learn the contingency was manipulated. As a result, patterns of changes in the NK cell numbers differed between the groups; NK cells remarkably increased at first and then gradually decreased to the baseline in the reinforcement group while the yoked group showed a moderate but sustained increase of NK cells. These patterns of changes in the NK cells were completely parallel with changes of the cardiovascular parameters but not with secretion of catecholamines. The present results suggest that cardiovascular and immune reactivity can be modulated along with progresses of adaptation for an acute stressor. © 2007 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.bbi.2007.03.004

Scopus

Regulation of lymphocytes redistribution via autonomic nervous activity during stochastic learning

Kimura Kenta, Ohira Hideki, Isowa Tokiko, Matsunaga Masahiro, Murashima Seikou

BRAIN BEHAVIOR AND IMMUNITY Vol. 21 ( 7 ) page： 921 - 934 2007.10

認知科学と臨床心理学の接点をもとめて

杉浦義典, 岩永誠, 大平英樹

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： S02 - S02 2007.9

精神神経内分泌免疫学におけるコルチゾール研究の最前線

磯和勅子, 大平英樹, 長野祐一郎, 山田クリス孝介, 織田弥生, 堀弘明, 永岑光恵

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： WS073 - WS073 2007.9

脳波を指標とした半側視野呈示による顔認知の研究

宮腰誠, 金山範明, 大平英樹

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： 3EV093 - 3EV093 2007.9

自己の客観的なモニタリングが感情反応に及ぼす影響

村上裕樹, 大平英樹, 松永昌宏

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： 2EV111 - 2EV111 2007.9

感情・思考の抑制と開示（2）

余語真夫, 佐藤健二, 河野和明, 大平英樹, 湯川進太郎, 大河原美以, 濱口佳和

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： WS045 - WS045 2007.9

報酬予期の不確実性とエラー関連電位との関係

白宇, 今井章, 嶋崎裕志, 大平英樹

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： 1EV056 - 1EV056 2007.9

心理臨床の基礎を求めて、その４

杉山崇, 坂本真士, 伊藤絵美, 大平英樹, 木島伸彦, 高橋雅延

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： WS116 - WS116 2007.9

サイコパシー特性がもたらす非合理的意思決定と末梢生理反応

大隅尚広, 大平英樹

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： 3AM115 - 3AM115 2007.9

Positive Illusionが不確実状況下での学習に与える影響

木村健太, 大平英樹

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： 1EV058 - 1EV058 2007.9

Affective Neuroscience for Psychologists 7

大平英樹, 高橋泰城, 鮫島和行, 依田高典

日本心理学会大会発表論文集 Vol. 71 ( 0 ) page： WS085 - WS085 2007.9

Influence of attention manipulation on emotion and autonomic responses.

Murakami H, Ohira H

Perceptual and motor skills Vol. 105 ( 1 ) page： 299 - 308 2007.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Perceptual and Motor Skills

Psychopathologies such as depression and anxiety have been associated with self-consciousness, a trait focusing on the self in terms of emotions and social images. A technique designed to shift attention away from the self tends to reduce anxiety, so the present purpose was to assess the effect of self body-state information on an individual's emotional and autonomic activity. 24 undergraduate and graduate students (10 men and 14 women), ages 19 to 27 years (M = 22.1, 5D = 2.5), were recruited as subjects. Focusing on body-state during an anxiety-inducing situation led to an increase of low to high frequency ratio of heart-rate variability which reflected cardiac sympathovagal balance. That is, attending to one's own bodily states enhanced relative sympathetic activity compared to parasympathetic activity, which can be interpreted as one of the physiological emotional responses elicited by anxiety. © Perceptual and Motor Skills 2007.

DOI： 10.2466/pms.105.1.299-308

Scopus

PubMed

Influence of attention manipulation on emotion and autonomic responses Reviewed

Hiroki Murakami, Hideki Ohira

PERCEPTUAL AND MOTOR SKILLS Vol. 105 ( 1 ) page： 299 - 308 2007.8

Language：English Publishing type：Research paper (scientific journal) Publisher：SAGE PUBLICATIONS INC

Psychopathologies such as depression and anxiety have been associated with self-consciousness, a trait focusing on the self in terms of emotions and social images. A technique designed to shift attention away from the self tends to reduce anxiety, so the present purpose was to assess the effect of self body-state information on an individual's emotional and autonomic activity. 24 undergraduate and graduate students (10 men and 14 women), ages 19 to 27 years (M-22.1, SD-2.5), were recruited as subjects. Focusing on body-state during an anxiety-inducing Situation led to an increase of low to high frequency ratio of heart-rate variability which reflected cardiac sympathovagal balance. That is, attending to one's own bodily states enhanced relative sympathetic activity compared to parasympathetic activity, which can be interpreted as one of the physiological emotional responses elicited by anxiety.

Web of Science

Influence of attention manipulation on emotion and autonomic responses

Murakami Hiroki, Ohira Hideki

PERCEPTUAL AND MOTOR SKILLS Vol. 105 ( 1 ) page： 299 - 308 2007.8

Study of brain-gut interaction in patients with irritable bowel syndrome Reviewed

KANAZAWA TAMOTSU, KONAGAYA TOSHIHIRO, IMAMURA HIROSHI, KANAYAMA NORIAKI, MATSUNAGA MASAHIRO, OHIRA HIDEKI, FUKUYAMA SEISUKE, SHINODA JUN, NOMURA MICHIO, NOGIMORI TSUYOSHI, KANEKO HIROSHI, KAKUMU SHINICHI

The journal of the Aichi Medical University Association Vol. 35 ( 2 ) page： 59 - 70 2007.6

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Aichi Medical University

Background: Brain activation areas in relation to bowel stimuli have been reported using brain imaging techniques in patients with irritable bowel syndrome(IBS). However, the results are controversial. The aim of this study is to clarify responsible brain site(s) when stimulated by the rectal balloon distension-induced abdominal symptom in IBS in terms of braingut interactions. Methods: Seven healthy volunteers and five patients with diarrhea-predominant IBS based on the Rome II criteria were recruited. All were right-handed men. Rectal sensitivity was examined with balloon distension using a barostat device. Studies are performed with or without rectal distension(RD). Each task took 4 minutes. The subjects were assigned to have each twice task at the individual pain threshold level with 11 minute intervals. The changes in brain blood flow were evaluated using H_2 ^<15>O-water positron emission tomography. Subjects were asked rectal pain and stress level with visual analogue scale(VAS) before and soon after the respective task. Blood pressure, heart rate, and several serum stress-related substances were also investigated. Results: The threshold of pressure for rectal pain was significantly lower in the IBS patients(IBS=14.4mmHg, volunteers=26.3mmHg on average). The IBS patients showed a significant increase in blood flow in especially insula, and in thalamus at RD as compared with that in volunteers. Analyzing changes in VAS score before and after task, an increase of score about physical stress was significantly larger in the IBS patients in RD although no differences was noted in pain perceived score among all subjects in RD. A tendency of correlation was observed between the RD-induced increment in blood flow in insula and that in VAS score of stress-feeling. Conclusions: The IBS patients had a significantly lower pain threshold against RD. Under RD stress at an individual pain threshold, a significant objective activation in insula, subjective physical stress, and correlation between them were obtained, indicating the brain activation magnitude-correlated stress in IBS.

CiNii Research

Psychopathic traits and cardiovascular responses to emotional stimuli Reviewed

Takahiro Osumi, Hiroshi Shimazaki, Akira Imai, Yoshinori Sugiura, Hideki Ohira

PERSONALITY AND INDIVIDUAL DIFFERENCES Vol. 42 ( 7 ) page： 1391 - 1402 2007.5

Language：English Publishing type：Research paper (scientific journal) Publisher：PERGAMON-ELSEVIER SCIENCE LTD

The present study investigated the abnormalities of cardiovascular responses to contextual or explicit emotional stimuli with respect to the two facets of psychopathy in a Japanese undergraduate population assessed by a Japanese version of the Primary and Secondary Psychopathy Scales. In study 1, recording heart rate and fingertip skin temperature while the participants watched an unpleasant movie, we found that the participants with high tendencies toward antisocial behavior (n = 16) showed smaller reactivity than those with low tendencies toward antisocial behavior (n = 16). By contrast, in study 2, heart rate orienting responses to affective slides were recorded, and the participants with high tendencies toward emotional detachment (n = 15) showed smaller responses to unpleasant slides than those with low tendencies toward emotional detachment (n = 16). Consistent with previous studies which recorded skin conductance and startle eye blink with psychopaths, these findings using a non-institutionalized sample also suggest that affective dysfunction in psychopathy is based on two specific physiological mechanisms. (c) 2006 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.paid.2006.10.016

Web of Science

Psychopathic traits and cardiovascular responses to emotional stimuli

Osumi T., Shimazaki H., Imai A., Sugiura Y., Ohira H.

Personality and Individual Differences Vol. 42 ( 7 ) page： 1391 - 1402 2007.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Personality and Individual Differences

DOI： 10.1016/j.paid.2006.10.016

Scopus

Psychopathic traits and cardiovascular responses to emotional stimuli

Osumi Takahiro, Shimazaki Hiroshi, Imai Akira, Sugiura Yoshinori, Ohira Hideki

PERSONALITY AND INDIVIDUAL DIFFERENCES Vol. 42 ( 7 ) page： 1391 - 1402 2007.5

Crossmodal effect with rubber hand illusion and gamma-band activity

Noriaki Kanayama, Atsushi Sato, Hideki Ohira

PSYCHOPHYSIOLOGY Vol. 44 ( 3 ) page： 392 - 402 2007.5

Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING

The integration of multimodal stimuli has been regarded as important for the promotion of adaptive behavior. Although recent work has identified brain areas that respond to multimodal stimuli, the temporal features are not clear yet. Earlier event-related potential studies revealed crossmodal attention effects, but did not focus on mechanisms underlying crossmodal integration. Here, electroencephalography (EEG) activity in the gamma band was considered as a correlate of multimodal integration. Participants localized a tactile stimulus on their fingers while seeing visual stimuli on rubber hands with the same posture as their hands. EEG analyses using wavelet transform suggested that interelectrode phase synchrony in the gamma-band range (40-50 Hz) was related to behavioral indices of the intermodal illusion under consideration. The findings suggest a role of high-frequency oscillations in the integrative processing of stimuli across modalities.

DOI： 10.1111/j.1469-8986.2007.00511.x

Web of Science

Scopus

PubMed

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