研究者詳細 - 大平　英樹

論文 - 大平　英樹

分割表示 731 件中 141 - 160 件目／全件表示 >>

Valence-separated representation of reward prediction error in feedback-related negativity and positivity

Bai Yu, Katahira Kentaro, Ohira Hideki

NEUROREPORT 26 巻 ( 3 ) 頁： 157 - 162 2015年2月

Analysis of skin conductance response during evaluation of preferences for cosmetic products

Ohira Hideki, Hirao Naoyasu

FRONTIERS IN PSYCHOLOGY 6 巻 2015年2月

Interoception and decision-making

Ohira H.

Japanese Journal of Neuropsychopharmacology 35 巻 ( 1 ) 頁： 11 - 18 2015年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Japanese Journal of Neuropsychopharmacology

We sometimes make decisions relying not necessarily on deliberative thoughts but on intuitive and emotional processes in uncertain situations. The somatic marker hypothesis proposed by Damasio argued that interoception, which means bodily responses such as sympathetic activity, can be represented in the insula and anterior cingulate cortex and can play critical roles in decision-making. Though this hypothesis has been criticized in its theoretical and empirical aspects, recent studies are expanding the hypothesis to elucidate multiple bodily responses including autonomic, endocrine, and immune activities that affect decision-making. In addition, cumulative findings suggest that the anterior insula where the inner model of interoception is represented can act as an interface between the brain and body in decision-making. This article aims to survey recent findings on the brain-body interplays underlying decision-making, and to propose hypotheses on the significance of the body in decision-making.

Scopus

Valence-separated representation of reward prediction error in feedback-related negativity and positivity 査読有り

Yu Bai, Kentaro Katahira, Hideki Ohira

NEUROREPORT 26 巻 ( 3 ) 頁： 157 - 162 2015年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS

Feedback-related negativity (FRN) is an event-related brain potential (ERP) component elicited by errors and negative outcomes. Previous studies proposed that FRN reflects the activity of a general error-processing system that incorporates reward prediction error (RPE). However, other studies reported inconsistent results on this issue - namely, that FRN only reflects the valence of feedback and that the magnitude of RPE is reflected by the other ERP component called P300. The present study focused on the relationship between the FRN amplitude and RPE. ERPs were recorded during a reversal learning task performed by the participants, and a computational model was used to estimate trial-by-trial RPEs, which we correlated with the ERPs. The results indicated that FRN and P300 reflected the magnitude of RPE in negative outcomes and positive outcomes, respectively. In addition, the correlation between RPE and the P300 amplitude was stronger than the correlation between RPE and the FRN amplitude. These differences in the correlation between ERP and RPE components may explain the inconsistent results reported by previous studies; the asymmetry in the correlations might make it difficult to detect the effect of the RPE magnitude on the FRN and makes it appear that the FRN only reflects the valence of feedback. Copyright (c) 2015 Wolters Kluwer Health, Inc. All rights reserved.

DOI： 10.1097/WNR.0000000000000318

Web of Science

Interoception and decision-making

Ohira Hideki

JAPANESE JOURNAL OF NEUROPSYCHOPHARMACOLOGY 35 巻 ( 1 ) 頁： 11 - 18 2015年2月

Analysis of skin conductance response during evaluation of preferences for cosmetic products 査読有り

Hideki Ohira, Naoyasu Hirao

FRONTIERS IN PSYCHOLOGY 6 巻 2015年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：FRONTIERS RESEARCH FOUNDATION

We analyzed skin conductance response (SCR) as a psychophysiological index to evaluate affective aspects of consumer preferences for cosmetic products. To examine the test-retest reliability of association between preferences and SCR, we asked 33 female volunteers to complete two experimental sessions approximately 1 year apart. The participants indicated their preferences in a typical paired comparison task by choosing the better option from a combination of two products among four products. We measured anticipatory SCR prior to expressions of the preferences. We found that the mean amplitude of the SCR elicited by the preferred products was significantly larger than that elicited by the non-preferred products. The participants' preferences and corresponding SCR patterns were well preserved at the second session 1 year later. Our results supported cumulating findings that SCR is a useful index of consumer preferences that has future potential, both in laboratory and marketing settings.

DOI： 10.3389/fpsyg.2015.00103

Web of Science

DNA Barcoding of Japanese Click Beetles (Coleoptera, Elateridae)

Oba, Y; Ohira, H; Murase, Y; Moriyama, A; Kumazawa, Y

PLOS ONE 10 巻 ( 1 ) 頁： e0116612 2015年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PLoS ONE

Click beetles (Coleoptera: Elateridae) represent one of the largest groups of beetle insects. Some click beetles in larval form, known as wireworms, are destructive agricultural pests. Morphological identification of click beetles is generally difficult and requires taxonomic expertise. This study reports on the DNA barcoding of Japanese click beetles to enable their rapid and accurate identification. We collected and assembled 762 cytochrome oxidase subunit I barcode sequences from 275 species, which cover approximately 75% of the common species found on the Japanese main island, Honshu. This barcode library also contains 20 out of the 21 potential pest species recorded in Japan. Our analysis shows that most morphologically identified species form distinct phylogenetic clusters separated from each other by large molecular distances. This supports the general usefulness of the DNA barcoding approach for quick and reliable identification of Japanese elaterid species for environmental impact assessment, agricultural pest control, and biodiversity analysis. On the other hand, the taxonomic boundary in dozens of species did not agree with the boundary of barcode index numbers (a criterion for sequence-based species delimitation). These findings urge taxonomic reinvestigation of these mismatched taxa.

DOI： 10.1371/journal.pone.0116612

Web of Science

Scopus

PubMed

内受容感覚と意思決定査読有り

大平英樹

日本神経精神薬理学雑誌 35 巻頁： 11-18 2015年

ストレスと認知機能：脳と身体の機能的相関査読有り

大平英樹

ストレス科学 29 巻頁： 13-23 2015年