Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

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Immune, endocrine and cardiovascular responses to controllable and uncontrollable acute stress

Isowa T, Ohira H, Murashima S

BIOLOGICAL PSYCHOLOGY Vol. 71 ( 2 ) page： 202 - 213 2006.2

Language：English Publishing type：Research paper (scientific journal) Publisher：Biological Psychology

This study, using a triadic-yoked design, clarified the effects of controllability of acute stress on responses of immune, cardiovascular (heart rate and blood pressure), and cortisol activities. Forty-three women in their follicular phase completed a mental arithmetic task as a stressor in which controllability was manipulated by correct or yoked-bogus feedback. The task decreased proportions of CD3+ T cells, CD4+ T cells, and CD19+ B cells, whereas it increased the numbers of white blood cells, lymphocytes, natural killer (NK) cells, and NK cell activity (NKCA). Our main hypothesis that greater immune and cardiovascular responses to the task would be obtained under the uncontrollable condition than under the controllable condition was not supported. However, the uncontrollable stress condition, but not the controllable situation, led to higher correlations between heart rate or blood pressure, and various immune parameters. On the other hand, parameters of heart rate variability reflecting sympathetic and parasympathetic activities showed significant correlations only with NKCA. These results suggest that immune responses were most directly associated with cardiovascular activities under the uncontrollable condition. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.biopsycho.2005.04.002

Web of Science

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Association of neural and physiological responses during voluntary emotion suppression Reviewed

H Ohira, M Nomura, N Ichikawa, T Isowa, T Iidaka, A Sato, S Fukuyama, T Nakajima, J Yamada

NEUROIMAGE Vol. 29 ( 3 ) page： 721 - 733 2006.2

Language：English Publishing type：Research paper (scientific journal) Publisher：ACADEMIC PRESS INC ELSEVIER SCIENCE

Recent neuromiaging studies have shown that several prefrontal regions play critical roles in inhibiting activation of limbic regions during voluntary emotion regulation. The present study aimed to confirm prior findings and to extend them by identifying the frontal neural circuitry associated with regulation of peripheral physiological responses during voluntary emotion suppression. Ten healthy female subjects were presented with affectively positive, neutral, and negative pictures in each of an Attending and Suppression task. Regional cerebral blood-flow changes were measured using O-15-water positron emission tomography, and autonomic (heart rate: HR, skin conductance response: SCR) and endocrine (adrenocorticotropic hormone: ACTH) indices were measured during both tasks. The left amygdala and the right anterior temporal pole were activated during the Attending task, whereas activation was observed in the left lateral prefrontal cortex (LPFC), including the adjacent medial prefrontal cortex (MPFC), and medial orbitofrontal cortex (MOFC) during the Suppression task. In the Attending task, activation in the amygdala and MOFC positively correlated with magnitudes of the SCR and ACTH responses. Emotion suppression elicited enhancement of SCR and the strength of the effect positively correlated with activation in the MOFC. These results suggest that the MOFC plays a pivotal role in top-down regulation of peripheral physiological responses accompanying emotional experiences. (c) 2005 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.neuroimage.2005.08.047

Web of Science

現実世界からの逃走　―離人症状の分類と回避傾向の関連について― Reviewed

金山範明・大隅尚広・大平英樹

パーソナリティ研究 Vol. 15 page： 361-364 2006

Differences in relaxation by means of guided imagery in a healthy community sample. Reviewed

Watanabe, E., Fukuda, S., Hara, H., Maeda, Y., Ohira, H., Shirakawa, T.

Alternative Thetapies in Health and Medicine Vol. 12 page： 60-66 2006

*Association of neural and physiological responses during voluntary emotion suppression. Reviewed

Ohira H, Nomura M, Ichikawa N, Isowa T, Iidaka T, Sato A, Fukuyama S, Nakajima T, Yamada J.

Neuroimage Vol. 29 page： 721-733 2006

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

Functional association of brain, autonomic, and endocrine activities accompanying experience of emotions and self regulation of emotions were examined by simultaneous recording. As results, activation of the amygdale was found during emotion experiences, and further the degree of activation in the amygdale could predict levels if skin conductance responses (sympathetic activity) and secretion of ACTH (endocrine activity). On the other hand, the lateral prefrontal and orbitofrontal cortices were involved in emotion regulation, and those parts of the brain could suppress activation of the amygdala.

現実世界からの逃走 ―離人症状の分類と回避傾向の関連について― Reviewed

金山範明, 大隅尚広, 大平英樹

パーソナリティ研究 Vol. 15 page： 361-364 2006

不安感情に対するディストラクションの効果 : ディストラクション課題の意味づけの影響(日本基礎心理学会第25回大会,大会発表要旨)

飯田沙依亜, 市川奈穂, 大平英樹

基礎心理学研究 Vol. 25 ( 1 ) page： 146 2006

(Abstracts of Presentation,The 24th Annual Meeting)

The Japanese Journal of Psychonomic Science Vol. 24 ( 2 ) page： 229 2006

Molecular phylogenetic analysis of click beetles (family Elateridae) inferred from 28S ribosomal DNA: The origin of bioluminescence in elaterids

Sagegami-Oba R., Oba Y., Ohira H.

LUMINESCENCE Vol. 21 ( 5 ) page： 290 - 290 2006

Imaging brain and immune association accompanying cognitive appraisal of acute stressor Reviewed

Hideki Ohira, Tokiko Isowa, Michio Nomura, Naho Ichikawa, Kenta Kimura, Makoto Miyakoshi, Tetsuya Iidaka, Seisuke Fukuyama, Toshihiro Nakashima, Jitsuhiro Yamada

NEUROSCIENCE RESEARCH Vol. 55 ( 39 ) page： S92 - S92 2006

Imaging brain and immune association accompanying cognitive appraisal of acute stressor Reviewed

Hideki Ohira, Tokiko Isowa, Michio Nomura, Naho Ichikawa, Kenta Kimura, Makoto Miyakoshi, Tetsuya Iidaka, Seisuke Fukuyama, Toshihiro Nakashima, Jitsuhiro Yamada

NEUROSCIENCE RESEARCH Vol. 55 ( 3 ) page： S92 - S92 2006

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

Activities of brain, cardiovascular, endocrine, and immune systems were measured simultaneously and their functional association was examined during an acute stress task where controllability of the stressor was manipulated experimentally. Results revealed that neural network in the orbitofrontal and medial prefrontal cortices is involved in evaluation of controllability and top down modulation over peripheral physiological responses.

Web of Science

Imaging brain and immune association accompanying cognitive appraisal of acute stressor

Ohira Hideki, Isowa Tokiko, Nomura Michio, Ichikawa Naho, Kimura Kenta, Miyakoshi Makoto, Iidaka Tetsuya, Fukuyama Seisuke, Nakashima Toshihiro, Yamada Jitsuhiro

NEUROSCIENCE RESEARCH Vol. 55 page： S92 - S92 2006

Effects of emotional arousal on the Concealed Information Test (CIT): A study by event related potential and autonomic indices

Akemi Osugi, Hideki Ohira

PSYCHOPHYSIOLOGY Vol. 43 page： S74 - S74 2006

Brain activity during reward learning: Simultaneous recording of PET and ERN

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

PSYCHOPHYSIOLOGY Vol. 43 page： S73 - S73 2006

Brain activity during reward learning: Simultaneous recording of PET and ERN Reviewed

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

PSYCHOPHYSIOLOGY Vol. 43 page： S73 - S73 2006

Differences in relaxation by means of guided imagery in a healthy community sample

Watanabe E, Fukuda S, Hara H, Maeda Y, Ohira H, Shirakawa T

ALTERNATIVE THERAPIES IN HEALTH AND MEDICINE Vol. 12 ( 2 ) page： 60 - 66 2006

Effects of attraction to favorite opposite gender on nervous, endocrine, and immune systems

Matsunaga, M; Yamauchi, T; Konagaya, T; Ohira, H

NEUROSCIENCE RESEARCH Vol. 55 page： S253 - S253 2006

Effects of emotional and nonemotional error feedback on brain and cardiac reactivity

Naho Ichikawa, Greg J. Siegle, Michio Nomura, Tetsuya Iidaka, Hideki Ohira

PSYCHOPHYSIOLOGY Vol. 43 page： S48 - S49 2006

Temporal variation of acute stress responses in sympathetic nervous and immune systems.

Kimura K, Isowa T, Ohira H, Murashima S

Biological psychology Vol. 70 ( 2 ) page： 131 - 9 2005.10

Temporal variation of acute stress responses in sympathetic nervous and immune systems

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

Biological Psychology Vol. 70 ( 2 ) page： 131 - 139 2005.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Biological Psychology

Sympathetic nervous activity plays a prominent role in acute stress responses in the immune system, enhancement of innate immunity and suppression of specific immunity. The present study was conducted to examine the temporal characteristics of such immune responses to acute stress and to determine their association with sympathetic activity in detail. For this purpose, 15 female undergraduates engaged in a continuous mental arithmetic task for 14 min, and we collected their blood samples for immune indices (CD3+ T cells, CD4+ T cells, NK cells) each 3 min during the task and saliva samples before and after the task. Our results showed that the proportion of Natural Killer cells (NK cells) increased even 2 min after initiation of the task, whereas proportions of CD3+ and CD4+ lymphocytes decreased 8 min after initiation of the task. Moreover, we found significant correlations between cardiovascular activity and the variations of immune indices. © 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.biopsycho.2004.12.006

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