title: Late positive potential (LPP) modulation during affective picture processing in preschoolers.
abstract: Research has demonstrated that late positive potential (LPP) is modulated by affective pictures in school-age children, adolescents and adults. However, little is known about such modulation in specific younger populations such as preschoolers. In this study, we examined whether LPP modulation during affective picture processing would also be observed in preschoolers as well as investigating the patterns of such modulation by using pictures which elicited emotional reactions of different valences. Twenty preschoolers (M age in months=61.00, SD=7.73) passively viewed pleasant, neutral and unpleasant pictures while their scalp event-related potentials (ERPs) were recorded. Results showed that in preschoolers pleasant and unpleasant pictures elicited significantly larger LPP amplitudes than neutral pictures, and this affective modulation of LPP amplitude emerged in the posterior region and gradually extended to the central and anterior regions.
authors.affiliation: Beijing Key Lab of Applied Experimental Psychology, School of Psychology, Beijing Normal University, Beijing 100875, China.
authors.forename: Mizhi
authors.initials: M
authors.lastname: Hua
authors.affiliation: Beijing Key Lab of Applied Experimental Psychology, School of Psychology, Beijing Normal University, Beijing 100875, China; Research Center of Emotion Regulation, Beijing Normal University, Beijing 100875, China.
authors.forename: Zhuo Rachel
authors.initials: ZR
authors.lastname: Han
authors.affiliation: Beijing Key Lab of Applied Experimental Psychology, School of Psychology, Beijing Normal University, Beijing 100875, China.
authors.forename: Siyi
authors.initials: S
authors.lastname: Chen
authors.affiliation: Beijing Key Lab of Applied Experimental Psychology, School of Psychology, Beijing Normal University, Beijing 100875, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Yang
authors.affiliation: Beijing Key Lab of Applied Experimental Psychology, School of Psychology, Beijing Normal University, Beijing 100875, China; State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China; Department of Psychology, School of Social and Behavior Sciences, Nanjing University, Nanjing 210023, China; Research Center of Emotion Regulation, Beijing Normal University, Beijing 100875, China; Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing 100875, China. Electronic address: rlzhou@bnu.edu.cn.
authors.forename: Renlai
authors.initials: R
authors.lastname: Zhou
authors.affiliation: Department of Psychology, California State University, Los Angeles, CA 90032, USA.
authors.forename: Sengqi
authors.initials: S
authors.lastname: Hu
mesh_terms: D000339:Affect / Q000502:physiology*; D002675:Child, Preschool; D004569:Electroencephalography / Q000379:methods; D004644:Emotions; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods*
keywords: Affective picture processing; Late positive potential; Preschoolers