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Many studies have found that unpleasant stimuli could produce stronger emotional effects than pleasant stimuli could. Although there has been a notion that triangle is perceived as negative and circle as positive, there has been no systematic study to map the degrees of valence of shapes with different affective perceptions. Here, we employed four shapes (ellipse, triangle, and line-drawn happy and angry faces) to investigate the behavior and electrophysiological responses, in order to systematically study shape-induced affective perception. The reaction time delay and the event-related potential (ERP), particularly the early ERP component, were applied to find the associations with different affective perceptions. Our behavioral results showed that reaction time for angry face was significantly shorter than those for the other three types of stimuli (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>p<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.05<\/mml:mn><\/mml:math>). In the ERP results, P1, N1, P2, and N2 amplitudes for angry face were significantly larger than those for happy face. Similarly, P1, N1, P2, and N2 amplitudes for triangle were significantly larger than those for ellipse. Particularly, P1 amplitude in the parietal lobe for angry face was the strongest, followed by happy face, triangle, and ellipse. Hence, this work found distinct electrophysiological evidence to map the shape-induced affective perception. It supports the hypothesis that affective strain would induce larger amplitude than affective ease does and strong affective stimuli induce larger amplitude than mild affective stimuli do.<\/jats:p>","DOI":"10.1155\/2018\/9795013","type":"journal-article","created":{"date-parts":[[2018,8,2]],"date-time":"2018-08-02T19:39:21Z","timestamp":1533238761000},"page":"1-8","source":"Crossref","is-referenced-by-count":4,"title":["Direct Electrophysiological Mapping of Shape-Induced Affective Perception"],"prefix":"10.1155","volume":"2018","author":[{"given":"Yingli","family":"Li","sequence":"first","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"},{"name":"The School of Education, Soochow University, Soochow, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingguo","family":"Ding","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"},{"name":"The No. 2 Peoples\u2019 Hospital of Changshu, Changshu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuancun","family":"Zhao","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"},{"name":"The School of Education, Soochow University, Soochow, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanan","family":"Bu","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"},{"name":"The School of Education, Soochow University, Soochow, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyan","family":"Tang","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peiguo","family":"Wang","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Genhua","family":"Zhang","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1004-7270","authenticated-orcid":true,"given":"Mengling","family":"Chen","sequence":"additional","affiliation":[{"name":"Sensory Cognition and Design Institute, Changshu Institute of Technology, Changshu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0627-5852","authenticated-orcid":true,"given":"Pei","family":"Liang","sequence":"additional","affiliation":[{"name":"Sensory Cognition 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