The study investigates the modulation of the late positive potential (LPP) by the motivational relevance of emotional pictures. Using an oddball paradigm and random presentation of pictures, the researchers found that the LPP was significantly larger for both pleasant and unpleasant pictures compared to neutral pictures. Additionally, pictures of high arousal elicited larger LPPs than less intense pictures. The findings suggest that the LPP is modulated by both the intrinsic motivational significance of the pictures and the evaluative context in which they are presented. The study also examines the lateralization of the LPP, finding that it is more pronounced at right parietal electrodes for emotionally arousing pictures. These results support the hypothesis that the LPP reflects the engagement of motivational circuits in the brain and the attentional resources allocated to the task.The study investigates the modulation of the late positive potential (LPP) by the motivational relevance of emotional pictures. Using an oddball paradigm and random presentation of pictures, the researchers found that the LPP was significantly larger for both pleasant and unpleasant pictures compared to neutral pictures. Additionally, pictures of high arousal elicited larger LPPs than less intense pictures. The findings suggest that the LPP is modulated by both the intrinsic motivational significance of the pictures and the evaluative context in which they are presented. The study also examines the lateralization of the LPP, finding that it is more pronounced at right parietal electrodes for emotionally arousing pictures. These results support the hypothesis that the LPP reflects the engagement of motivational circuits in the brain and the attentional resources allocated to the task.