Faculty Profiles - OHIRA, Hideki

Papers - OHIRA, Hideki

Division display 621 - 640 of about 731 ／ All the affair displays >>

Dissociation of conscious and unconscious repetition priming effect on event-related potentials

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

Neuropsychologia Vol. 43 ( 8 ) page： 1168 - 1176 2005

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

Although the neural basis of the unconscious priming effect has previously been investigated, the results of these studies have possibly been contaminated by a conscious priming effect. The aim of the present study was to dissociate the effects of conscious and unconscious priming on event-related potential (ERP) by using the process-dissociation procedure. A prime word was presented briefly, followed by a word-stem, in each trial. Under the inclusion condition, subjects were instructed to complete the word-stem using the prime word, while under the exclusion condition subjects were asked to complete the word-stem with a word not seen as prime. The behavioral priming effect was obtained under both conditions, indicating that the prime words were processed unconsciously and influenced the word-stem completion task. We found that two ERP components were affected by repetition priming. First, the N400 amplitude was decreased by word repetition under the inclusion condition, but not under the exclusion condition. This result suggests that N400 would reflect conscious lexical processing, but not unconscious lexical activation. Second, the negativity at left front lateral region was enhanced by word repetition under the exclusion condition. We discuss this finding herein in relation to the activity of the left inferior prefrontal cortex with regard to word semantic processing. © 2004 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.neuropsychologia.2004.11.020

Scopus

Dissociation of conscious and unconscious repetition priming effect on event-related potentials

Matsumoto A, Iidaka T, Nomura M, Ohira H

NEUROPSYCHOLOGIA Vol. 43 ( 8 ) page： 1168 - 1176 2005

Exploration of the action monitoring system by error-related brain negativity (ERN) and error-related eyeblink (ERE).

Ichikawa, N; Ohira, H

INTERNATIONAL JOURNAL OF PSYCHOLOGY Vol. 39 ( 5-6 ) page： 49 - 49 2004.10

Effects of trait anxiety on memory-based categorization: An event-related potential study

M Inaba, H Ohira

INTERNATIONAL JOURNAL OF PSYCHOLOGY Vol. 39 ( 5-6 ) page： 144 - 144 2004.10

Effects of emotional valence and self-relevance on working memory in mild depression

M Shimura, H Ohira, M Nomura

INTERNATIONAL JOURNAL OF PSYCHOLOGY Vol. 39 ( 5-6 ) page： 134 - 134 2004.10

Brain mechanism for modulation of peripheral immune activity in uncontrollable stress

H Ohira, T Isowa, M Nomura, N Ichikawa

INTERNATIONAL JOURNAL OF PSYCHOLOGY Vol. 39 ( 5-6 ) page： 425 - 425 2004.10

犯罪不安経験の質的分析と主観的身体反応(<特別セッション4>犯罪現象の行動計量学)(第31回日本行動計量学会大会発表一覧)

小野寺理江, 桐生正幸, 大平英樹

行動計量学 Vol. 31 ( 2 ) page： 141 2004.9

Social support and salivary secretory immunoglobulin A response in women to stress of making a public speech.

Ohira H

Perceptual and motor skills Vol. 98 ( 3 Pt 2 ) page： 1241 - 50 2004.6

Social support and salivary secretory immunoglobulin a response in women to stress of making a public speech Reviewed

Hideki Ohira

Perceptual and Motor Skills Vol. 98 ( 3 ) page： 1241 - 1250 2004.6

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

Acute experimental Stressors transiently increase volume of secretory immunoglobulin A (s-IgA) in saliva. The present study examined buffering effects of social support on response of s-IgA to a brief psychological stress (giving a public speech), 24 women were divided at random into three groups, an emotional support group, an informational support group and a no-support group (control). For each group, s-IgA measures were obtained from each person under baseline conditions, during preparation of a speech when social support or no support was given, immediately after the speech and during a 'recovery' period. Level of s-IgA in the control group significantly elevated during preparation for the speech and just after the speech compared to baseline, suggesting that the speech task stimulated secretory immune function. On the other hand, the subjects in the emotional support group showed increased s-IgA during the preparation period but secretion of s-IgA rapidly returned to the baseline after the speech task. Secretion of s-IgA in the informational social support group was unchanged at any measurement point. These results suggest that social support attenuates the affect of a Stressor on somatic state.

Scopus

PubMed

Social support and salivary secretory immunoglobulin A response in women to stress of making a public speech

Ohira H

PERCEPTUAL AND MOTOR SKILLS Vol. 98 ( 3 ) page： 1241 - 1250 2004.6

Social support and salivary secretory immunoglobulin a response in women to stress of making a public speech

Ohira H.

Perceptual and Motor Skills Vol. 98 ( 3 II ) page： 1241 - 1250 2004.6

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

DOI： 10.2466/pms.98.3.1241-1250

Scopus

Effects of expression and inhibition of negative emotions on health, mood states, and salivary secretory immunoglobulin a in Japanese mildly depressed undergraduates

Takagi S., Ohira H.

Perceptual and Motor Skills Vol. 98 ( 3 II ) page： 1187 - 1198 2004.6

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

Previous studies have indicated that expression of negative emotions facilitates mental and physical health and inhibition of negative emotions increases susceptibility to illness. This study was conducted to examine whether those findings can be expanded to populations with non-Western cultural backgrounds. Specifically, we explored effects of expression and inhibition of negative emotions on health, mood states, and mucosal immune function in mildly depressed Japanese individuals. 16 depressed and 16 nondepressed female undergraduates were required either to write about their unpleasant experiences and superficial topics or to suppress any emotional responses and thoughts about them. Secretory immunoglobulin A (s-IgA) in saliva and psychological indices were measured at an experimental session and at a follow-up 1 wk. later. Beneficial effects of expression of emotions on subjective health were indicated in the nondepressed group, whereas harmful effects of inhibition on subjective health were shown in the depressed group. Emotional expression by writing improved mood states both in the depressed and nondepressed groups but induced elevation of salivary s-IgA only in the depressed group.

DOI： 10.2466/pms.98.3c.1187-1198

Scopus

Effects of expression and inhibition of negative emotions on health, mood states, and salivary secretory immunoglobulin A in Japanese mildly depressed undergraduates Reviewed

S Takagi, H Ohira

PERCEPTUAL AND MOTOR SKILLS Vol. 98 ( 3 ) page： 1187 - 1198 2004.6

Language：English Publishing type：Research paper (scientific journal) Publisher：PERCEPTUAL MOTOR SKILLS

Web of Science

Effects of expression and inhibition of negative emotions on health, mood states, and salivary secretory immunoglobulin A in Japanese mildly depressed undergraduates

Takagi S, Ohira H

PERCEPTUAL AND MOTOR SKILLS Vol. 98 ( 3 ) page： 1187 - 1198 2004.6

Eyeblink activity as an index of cognitive processing: temporal distribution of eyeblinks as an indicator of expectancy in semantic priming.

Ichikawa N, Ohira H

Perceptual and motor skills Vol. 98 ( 1 ) page： 131 - 40 2004.2

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

Eyeblink activity was examined as a psychophysiological index of cognitive processing during a typical semantic priming task. To examine the expectancy-induced effects, the proportion of semantically related pairs was controlled. 8 undergraduates engaged in a lexical decision task for target words. Each condition differed in target type (Semantically Related with prime vs Unrelated vs Nonword) and proportion of Semantically Related pairs (High vs Low). As a result, the temporal distribution of blinks was clearly influenced by the semantic priming effect. The peak of blink bursts, which is correlated with the end of cognitive processing, occurred the fastest in the semantically Related and High proportion condition. While blink latency showed larger individual differences, the temporal distribution of blinks was suggested as a more efficient index of cognitive processing.

DOI： 10.2466/pms.98.1.131-140

Scopus

PubMed

Eyeblink activity as an index of cognitive processing: Temporal distribution of eyeblinks as an indicator of expectancy in semantic priming

Ichikawa N, Ohira H

PERCEPTUAL AND MOTOR SKILLS Vol. 98 ( 1 ) page： 131 - 140 2004.2

Eyeblink activity as an index of cognitive processing: Temporal distribution of eyeblinks as an indicator of expectancy in semantic priming Reviewed

N Ichikawa, H Ohira

PERCEPTUAL AND MOTOR SKILLS Vol. 98 ( 1 ) page： 131 - 140 2004.2

Language：English Publishing type：Research paper (scientific journal) Publisher：PERCEPTUAL MOTOR SKILLS

Web of Science

Reactivity of immune, endocrine and cardiovascular parameters to active and passive acute stress

T Isowa, H Ohira, S Murashima

BIOLOGICAL PSYCHOLOGY Vol. 65 ( 2 ) page： 101 - 120 2004.1

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

This study clarified associations among immune, autonomic, and endocrine activities during mental arithmetic and cold pressor stress tasks in 26 women in the follicular phase. Both tasks decreased CD3+ T cells,CD4+ T cells, and CD19+ B cells, whereas they increased lymphocytes, granulocytes, NK cells, and NK cell activity (NKCA). The mental arithmetic task had a greater impact than the cold pressor task on changes in CD3+ T cells and in NK cells. Cardiovascular reactivity to active stress was associated with increased NK cells and decreased CD3+ T cells. Reduced cortisol levels during passive stress were associated with decreased CD19+ B cells and with increased NK cells. The merits of this study are that it controlled the following factors. Perceived stress during the two tasks was matched; both tasks lasted long enough to elicit high-magnitude responses; and the length of the intervening rest period minimized probable carryover effects between tasks. (C) 2003 Elsevier B.V. All rights reserved.

DOI： 10.1016/S0301-0511(03)00115-7

Web of Science

Functional association of the amygdala and ventral prefrontal cortex during cognitive evaluation of facial expressions primed by masked angry faces: an event-related fMRI study.

Nomura M, Ohira H, Haneda K, Iidaka T, Sadato N, Okada T, Yonekura Y

NeuroImage Vol. 21 ( 1 ) page： 352 - 63 2004.1

Functional association of the amygdala and ventral prefrontal cortex during cognitive evaluation of facial expressions primed by masked angry faces: an event-related fMRI study

Nomura M, Ohira H, Haneda K, Iidaka T, Sadato N, Okada T, Yonekura Y

NEUROIMAGE Vol. 21 ( 1 ) page： 352 - 363 2004.1

　 PREV - NEXT 　

<OHIRA, Hideki>

Papers - OHIRA, Hideki