Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

Division display 401 - 420 of about 731 ／ All the affair displays >>

Human Visual System Automatically Encodes Sequential Regularities of Discrete Events Reviewed

Kimura M, Schröger E, Czigler I, Ohira H.

Journal of Cognitive Neuroscience Vol. in press. 2009.7

Neural bases of behavior selection without an objective correct answer Reviewed

Takashi Nakao, Takahiro Osumi, Hideki Ohira, Yukinori Kasuya, Jun Shinoda, Jitsuhiro Yamada

NEUROSCIENCE LETTERS Vol. 459 ( 1 ) page： 30 - 34 2009.7

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

Life choice (e.g. occupation choice) often includes situations with two or more possible answers. How does the brain respond to such conflict-ridden situations? We investigated whether the dorsal anterior cingulate cortex (dACC) evaluates the degree of conflict between possible answers. Additionally, we investigated whether the medial prefrontal cortex (MPFC) or the medial temporal lobe (MTL) has a function in behavior selection with plural possible answers. We used an occupational choice task (e.g. which occupation do you think you could do better?-dancer or chemist) with two possible answers and a word-length task (e.g. which word is longer?-dentist or comedian) that has a correct answer. The conflicts in each task were manipulated. Results showed that the dACC and the MTL were activated when the conflict during occupational choice was large, and that the MPFC and posterior cingulate cortex were activated more in the occupational choice task than in the word-length task. Our results show that the dACC evaluates the degree of conflict between possible answers, and that the MTL, MPFC, and posterior cingulate cortex have a function in behavior selection without an objective correct answer. It is thought that the MTL functions to reduce conflict when a large-conflict is detected in the dACC. Furthermore, the MPFC and posterior cingulate are thought to have a function of biasing any of the plural answers in behavior selection without an objective answer. (C) 2009 Elsevier Ireland Ltd. All rights reserved.

DOI： 10.1016/j.neulet.2009.04.056

Web of Science

Human Visual System Automatically Encodes Sequential Regularities of Discrete Events Reviewed

Kimura M, Schr&ouml, ger E, Czigler I, Ohira H

Journal of Cognitive Neuroscience Vol. in press. 2009.7

*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 ( 1 ) page： 1024-1037 2009.7

主観的幸福感と急性ストレス負荷時の免疫系の活性化との関連

松永昌宏, 金子宏, 坪井宏仁, 山本紘子, 大平英樹, 山川香織, 磯和勅子

心身医学 Vol. 49 ( 6 ) page： 534 - 534 2009.6

MEDIAL PREFRONTAL CORTEX AND COGNITIVE REGULATION

NAKAO Takashi, TAKEZAWA Tomohiro, MIYATANI Makoto, OHIRA Hideki

PSYCHOLOGIA Vol. 52 ( 2 ) page： 93 - 109 2009.6

Language：English Publishing type：Research paper (scientific journal) Publisher：Psychologia Society

Medial prefrontal cortex (MPFC) activation has been observed in studies of many types related to emotion regulation, self and familiar other-knowledge, mentalizing, morality, reward, and uncertainty. Furthermore, the anterior cingulate cortex (ACC) and the lateral prefrontal cortex (LPFC), which have reciprocal connections with MPFC, are considered necessary for cognitive regulation. Based on these findings, Nakao, Takezawa, and Miyatani (2006) proposed an integrative explanation for MPFC function: MPFC has a function of representing a benchmark that reduces conflict among many possible answers by biasing either choice of behavior. In this article, we review studies related to MPFC function and the benchmark hypothesis with recent new findings. Additionally, we discuss emotion regulation, which was not described in Nakao et al. (2006), in relation to the benchmark hypothesis.<br>

DOI： 10.2117/psysoc.2009.93

Web of Science

Scopus

CiNii Research

MEDIAL PREFRONTAL CORTEX AND COGNITIVE REGULATION Reviewed

Takashi Nakao, Tomohiro Takezawa, Makoto Miyatani, Hideki Ohira

PSYCHOLOGIA Vol. 52 ( 2 ) page： 93 - 109 2009.6

Language：English Publishing type：Research paper (scientific journal) Publisher：PSYCHOLOGIA SOC

Web of Science

*Regulation of natural killer cell redistribution by prefrontal cortex during stochastic learning. Reviewed

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

Neuroimage Vol. 47 ( 3 ) page： 897-907 2009.5

Transient responses of inflammatory cytokines in acute stress. Reviewed

Yamakawa K, Matsunaga M, Isowa T, Kimura K, Kasugai K, Yoneda M, Kaneko H, Ohira H.

Biological Psychology Vol. 82 page： 25-32 2009.5

Transient responses of inflammatory cytokines in acute stress. Reviewed

Yamakawa K, Matsunaga M, Isowa T, Kimura K, Kasugai K, Yoneda M, Kaneko H, Ohira H

Biological Psychology Vol. 82 page： 25-32 2009.5

*Regulation of natural killer cell redistribution by prefrontal cortex during stochastic learning. Reviewed

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

Neuroimage Vol. 47 ( 3 ) page： 897-907 2009.5

Influence of attention to somatic information on emotional and autonomic responses Reviewed

Murakami H, Ohira H, Matsunaga M, Kimura K.

Percepteptual and Motor Skills Vol. 108 ( 2 ) page： 531-539 2009.4

Molecular analysis of mitochondrial hypervariable region 1 in 394 Japanese individuals

Kato H., Maeno Y., Ohira H., Yamada Y., Nagao M.

Legal Medicine Vol. 11 ( SUPPL. 1 ) 2009.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Legal Medicine

Mitochondrial DNA (mtDNA) is a powerful tool for forensic casework when the resource is highly putrefied or very limited. It is important that mtDNA sequence databases continue to be generated and published, to extend mtDNA typing capability to additional populations and to increase the size of existing databases. The aim of this study was to analyze hypervariable region 1 (HV1) of mtDNA and establish a new database of mtDNA in Japanese population. Three hundred and ninety-four unrelated Japanese individuals were investigated. They were classified into 193 haplotypes based on HV1 sequence. Nucleotide substitutions were clustered in several positions and were 79% at 16,223, 50% at 16,362, and 29% at 16,189. Transition accounts for 81% of all the mutations and especially transition from cytosine to thymine (33%) was the most frequent substitution. 16,223-16,362 was observed in 34 individuals, following 16,129-16,223-16,362 in 29 individuals, and haplotype 16,223-16,278-16,362 in 14 individuals. Genetic diversity and random match probability in this population were estimated to 0.987% and 1.95%, respectively. In conclusion, HV1 of mitochondria sequence has a high discrimination power, but in addition to HV1, analysis of other region such as HV2 and HV3 are required in certain cases. © 2009 Elsevier Ireland Ltd. All rights reserved.

DOI： 10.1016/j.legalmed.2009.01.069

Scopus

INFLUENCE OF ATTENTION TO SOMATIC INFORMATION ON EMOTIONAL AND AUTONOMIC RESPONSES

Murakami Hiroki, Ohira Hideki, Matsunaga Masahiro, Kimura Kenta

PERCEPTUAL AND MOTOR SKILLS Vol. 108 ( 2 ) page： 531 - 539 2009.4

INFLUENCE OF ATTENTION TO SOMATIC INFORMATION ON EMOTIONAL AND AUTONOMIC RESPONSES Reviewed

Hiroki Murakami, Hideki Ohira, Masahiro Matsunaga, Kenta Kimura

PERCEPTUAL AND MOTOR SKILLS Vol. 108 ( 2 ) page： 531 - 539 2009.4

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

The present study aimed to investigate the dissociable effects of two forms of self-focus on emotional and autonomic responses. One form is Suppression, which includes the suppression of heart rate and self-evaluation of performance. The other is observation, which includes attention to one's own heart rate with no suppression and no evaluation. 26 undergraduate and graduate students from the Nagoya University campus (13 men, 13 women), ages 18 to 24 years (M=20.7, SD=1.6) were recruited. Participants were provided with their own heart rate as feedback for 5 min., during which participants conducted a self-focus manipulation. Several days after the experimental session for one condition, the same participants conducted another experimental session for the other condition. Instruction to suppress enhanced physiological arousal and subsequent negative emotions; however, instruction to observe did not increase physiological arousal or negative emotions.

DOI： 10.2466/PMS.108.2.531-539

Web of Science

Influence of attention to somatic information on emotional and autonomic responses.

Murakami H, Ohira H, Matsunaga M, Kimura K

Perceptual and motor skills Vol. 108 ( 2 ) page： 531 - 9 2009.4

Associations among positive mood, brain, and cardiovascular activities in an affectively positive situation

Matsunaga Masahiro, Isowa Tokiko, Kimura Kenta, Miyakoshi Makoto, Kanayama Noriaki, Murakami Hiroki, Fukuyama Seisuke, Shinoda Jun, Yamada Jitsuhiro, Konagaya Toshihiro, Kaneko Hiroshi, Ohira Hideki

BRAIN RESEARCH Vol. 1263 page： 93 - 103 2009.3

Associations among positive mood, brain, and cardiovascular activities in an affectively positive situation

Matsunaga M., Isowa T., Kimura K., Miyakoshi M., Kanayama N., Murakami H., Fukuyama S., Shinoda J., Yamada J., Konagaya T., Kaneko H., Ohira H.

Brain Research Vol. 1263 page： 93 - 103 2009.3

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

It is hypothesized that experiencing positive emotions such as pleasure leads to a perception of the body being in a positive state. This study demonstrated associations among positive mood, brain, and cardiovascular activities by simultaneously recording these activities when positive emotions were evoked in participants watching films revolving around a love story. Heart rate variability analysis revealed increased parasympathetic nervous activity while watching the film. The following brain regions were significantly activated in the positive condition relative to the control condition: medial prefrontal cortex, thalamus, superior temporal gyrus, inferior frontal gyrus, and cerebellum. Further, covariate analyses indicated that these brain regions were temporally associated with subjective positive mood. Activities of brain regions considered to be related to interoceptive awareness, such as the insular cortex, anterior cingulate cortex, amygdala, and orbitofrontal cortex, were also temporally associated with the cardiovascular change. These results suggest that while an individual experiences positive emotions, activities of the central nervous system and cardiovascular system may be interrelated, and the brain may perceive the body to be in a positive state. © 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.brainres.2009.01.027

Scopus

Association of serotonin transporter gene polymorphism and emotion regulation.

Murakami H, Matsunaga M, Ohira H

Neuroreport Vol. 20 ( 4 ) page： 414 - 8 2009.3

Association of serotonin transporter gene polymorphism and emotion regulation

Murakami H., Matsunaga M., Ohira H.

NeuroReport Vol. 20 ( 4 ) page： 414 - 418 2009.3

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

Metacognitive strategies of emotion regulation such as an objective perspective of one's self are known as primary factors in mindfulness intervention. Earlier studies, however, suggest that the effect of mindfulness differs because of the individual variability. In this study, we investigated the influence of the serotonin transporter gene polymorphism during the application of a metacognitive strategy of emotion regulation. Short (S) homozygotes showed more negative emotional states than SL individuals in both metacognition and control conditions. The high frequency of heart rate variability, however, increased in the metacognition condition only in S homozygotes. This result indicated that the metacognitive strategy of emotion regulation is more effective for increasing parasympathetic dominance in S homozygotes than in SL individuals. © 2009 Wolters Kluwer Health|Lippincott Williams & Wilkins.

DOI： 10.1097/WNR.0b013e328325a910

Scopus

　 PREV - NEXT 　

<OHIRA, Hideki>

Papers - OHIRA, Hideki