Abstract
Recent research in adults has determined that late positive potential (LPP) is modulated by affective pictures. Here we investigated whether affective modulation of LPP reflects developmental changes during adolescence. Event-related potentials were recorded from 50 adolescents (11–17 years old) while they viewed 90 pictures of middle arousal level from the Chinese affective picture system. Consistent with previous studies in adults, affective pictures elicited larger LPP activities than neutral pictures over bilateral centroparietal sensors. Moreover, the LPP amplitudes varied as a function of age, increasing with age regardless of picture valence. These observations imply that adolescents exhibit affective modulation of LPP similar to adults, and undergo developmental changes in automatic attention to affective or non-affective pictures.
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