Dissociable Modulation of Overt Visual Attention in Valence and Arousal Revealed by Topology of Scan Path
文献类型：期刊论文
| 作者 | Ni JG2,4; Jiang HH2,4; Jin YX4,5; Chen NH2; Wang JH2; Wang ZB2; Luo YJ6; Ma YY[*]1,2,3; Hu XT[*]1,2,3 |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2011 |
| 卷号 | 6期号:4页码:e18262 |
| 通讯作者 | yuanma0716@vip.sina.com |
| 合作状况 | 其它 |
| 英文摘要 | Emotional stimuli have evolutionary significance for the survival of organisms; therefore, they are attention-grabbing and are processed preferentially. The neural underpinnings of two principle emotional dimensions in affective space, valence (degree of pleasantness) and arousal (intensity of evoked emotion), have been shown to be dissociable in the olfactory, gustatory and memory systems. However, the separable roles of valence and arousal in scene perception are poorly understood. In this study, we asked how these two emotional dimensions modulate overt visual attention. Twenty-two healthy volunteers freely viewed images from the International Affective Picture System (IAPS) that were graded for affective levels of valence and arousal (high, medium, and low). Subjects' heads were immobilized and eye movements were recorded by camera to track overt shifts of visual attention. Algebraic graph-based approaches were introduced to model scan paths as weighted undirected path graphs, generating global topology metrics that characterize the algebraic connectivity of scan paths. Our data suggest that human subjects show different scanning patterns to stimuli with different affective ratings. Valence salient stimuli (with neutral arousal) elicited faster and larger shifts of attention, while arousal salient stimuli (with neutral valence) elicited local scanning, dense attention allocation and deep processing. Furthermore, our model revealed that the modulatory effect of valence was linearly related to the valence level, whereas the relation between the modulatory effect and the level of arousal was nonlinear. Hence, visual attention seems to be modulated by mechanisms that are separate for valence and arousal. |
| 收录类别 | SCI |
| 资助信息 | This study was supported by the National Science Foundation of China (NSFC 30530270, 30670669, 31070965, 30870825, 31070963, 30921064, 30770700 and 30930031), 973 program (2007CB947703, S2010071114 and 2011CB711001), the Major State Basic Research of China (NO2003CB716600), Program of CASC (KSCX1-YW-R-33, KSCX2-EW-J-23, KSCX2-EW-R-11 and KSCX2-YW-R-261), Yunnan Development and Reform Commission No. 2009-1988 and West Light Foundation of the Chinese Academy of Sciences (292008312D11035). |
| 语种 | 英语 |
| 公开日期 | 2011-04-25 |
| 源URL | [http://159.226.149.42:8088/handle/353002/6607]  |
| 专题 | 昆明动物研究所_认知障碍病理学 昆明动物研究所_神经系统编码 |
| 作者单位 | 1.State Key Laboratory of Brain and Cognitive Science, Beijing, People’s Republic of China 2.Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, People’s Republic of Chin 3.Institute of Biophysics, Chinese Academy of Sciences, Beijing, People’s Republic of China 4.Graduate School of Chinese Academy of Sciences, Beijing, People’s Republic of China 5.Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, People’s Republic of China 6.State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Ni JG,Jiang HH,Jin YX,et al. Dissociable Modulation of Overt Visual Attention in Valence and Arousal Revealed by Topology of Scan Path[J]. PLOS ONE,2011,6(4):e18262. |
| APA | Ni JG.,Jiang HH.,Jin YX.,Chen NH.,Wang JH.,...&Hu XT[*].(2011).Dissociable Modulation of Overt Visual Attention in Valence and Arousal Revealed by Topology of Scan Path.PLOS ONE,6(4),e18262. |
| MLA | Ni JG,et al."Dissociable Modulation of Overt Visual Attention in Valence and Arousal Revealed by Topology of Scan Path".PLOS ONE 6.4(2011):e18262. |
入库方式： OAI收割
来源：昆明动物研究所
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