“…On the other hand, we did not find any significant modulation of these effects by the emotional content of the scene, suggesting a common visual object recognition mechanism for neutral, pleasant and unpleasant pictures during this specific time interval. A possible reason may be that our pre-selected IAPS stimuli were only mildly arousing, in contrast with many previous studies in literature showing reliable visual ERP effects with highly arousing pictures (including the EPN and LPP components, recorded following stimulus onset), relative to neutral, or low arousing scenes (Delplanque et al, 2004;Junghöfer, Bradley, Elbert, & Lang, 2001;Peyk, Schupp, Keil, Elbert, & Junghöfer, 2009;Schupp, Junghöfer, Weike, & Hamm, 2003a;Schupp et al, 2003b;Schupp et al, 2006;Wiens, Peira, Golkar, & Ohman, 2008). In addition, given the specific data analysis used in our study, we cannot rule out Brain Dynamics of Upstream Perceptual Processes 31 the possibility that these neural processes might be triggered with some delay for emotional compared to neutral pictures, an issue that requires further research.…”