Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

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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

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

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

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

Scopus

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

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

K Kimura, T Isowa, H Ohira, S Murashima

BIOLOGICAL PSYCHOLOGY Vol. 70 ( 2 ) page： 131 - 139 2005.10

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

DOI： 10.1016/j.biopsycho.2004.12.006

Web of Science

Neural evidence of effects of emotional valence on word recognition. Reviewed International journal

Midori Inaba, Michio Nomura, Hideki Ohira

International journal of psychophysiology : official journal of the International Organization of Psychophysiology Vol. 57 ( 3 ) page： 165 - 73 2005.9

Language：English Publishing type：Research paper (scientific journal)

There are no clear reports of electrophysiological evidence of the facilitating effect of negative valence on word recognition. However, behavioral psychological studies have suggested that negative words can be recognized more accurately than positive and neutral words. This study aimed to examine whether, and if so how, the valence of words could influence accuracy and event-related potentials (ERPs) in a recognition task. ERPs were recorded from 20 healthy subjects during performance of a word recognition task. We found a behavioral advantage in discriminability between old and new items for negative words. As for ERPs, the positive-going shift was evident for correct responses to targets in late latency at midline and left centro-parietal sites. Additionally, the magnitude of this component was greatest for negative targets, next for positive targets, and least for neutral targets. The findings offer support for the idea that negative content greatly accelerates recognition memory compared to positive and neutral words.

PubMed

Neural evidence of effects of emotional valence on word recognition

M Inaba, M Nomura, H Ohira

INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY Vol. 57 ( 3 ) page： 165 - 173 2005.9

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

DOI： 10.1016/j.ijpsycho.2005.01.002

Web of Science

Scopus

PubMed

Effects of value and reward magnitude on feedback negativity and P300 Reviewed

A Sato, A Yasuda, H Ohira, K Miyawaki, M Nishikawa, H Kumano, TL Kuboki

NEUROREPORT Vol. 16 ( 4 ) page： 407 - 411 2005.3

Language：English Publishing type：Research paper (scientific journal) Publisher：LIPPINCOTT WILLIAMS & WILKINS

Feedback negativity is a negative component of the event-related brain potential observed 250-300 ms after feedback stimuli. The present study investigated the effects of value (correct or incorrect) and reward magnitude (no, small or large) on feedback negativity and P300. Feedback negativity was larger after incorrect feedback than after correct feedback, irrespective of reward magnitude. In contrast, P300 amplitude increased with reward magnitude, irrespective of value. The amplitude of feedback negativity was correlated with a trait score of negative affect and not positive affect, whereas P300 amplitude was correlated with positive affect and not negative affect. These results suggest that value and reward magnitude are processed separately in the brain. (c) 2005 Lippincott Williams F Wilkins.

Web of Science

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

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

Biological psychology Vol. 70 page： 131-139 2005

Effects of value and reward magnitude on feedback negativity and P300. Reviewed

Sato, A., Yasuda, A., Ohira, H., Miyawaki, K., Nishikawa, M., Kumano, H., Kuboki, T.

Neuroreport Vol. 16 page： 407-411 2005

Dissociation of conscious and unconscious repetition priming effects on event-related potentials. Reviewed

Matsumoto, A., Iidaka, T., Nomura, M., Ohira H.

Neuropsychologia Vol. 43 page： 1168-1176 2005

Neural evidence of effects of emotional valence on word recognition. Reviewed

Inaba, M., Nomura, M., Ohira, H.

International Journal of Psychophysiology Vol. 57 page： 165-173 2005

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

Isowa T, Ohira H, Murashima M.

Biological Psychology Vol. 71 page： 202-213 2005

Language：English Publishing type：Research paper (scientific journal)

Innate immune cells such as natural killer increase and acquired immune cells such as T cells decrease accompanying acute stress (redistribution of lymphocytes). This study examined effects of controllability of an acute stressor on the redistribution of lymphocytes. It was clarified that redistribution is suppressed in an uncontrollable situation. We further clarified mediating mechanisms of the phenomena and discussed significance of the phenomena in adaptation.

外的手がかりが閾下提示された顔表情の判断に及ぼす影響 Reviewed

野村理朗・宮腰誠・金山範明・大平英樹

人間環境学研究 Vol. 3 page： 1-5 2005

社会的認知とストレス Invited

大平英樹

ストレス科学 Vol. 19 page： 38-48 2005

社会的認知とストレス Invited

大平英樹

ストレス科学 Vol. 19 page： 38-48 2005

社会的認知とストレス

大平英樹

ストレス科学 19 page： 38 - 48 2005

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Papers - OHIRA, Hideki