Moving toward reality: Electrocortical reactivity to naturalistic
multimodal emotional videos
Abstract
While previous research has investigated the effects of emotional videos
on peripheral physiological measures and conscious experience, this
study extends the research to include cortical measures, specifically
the steady-state visual evoked potential (ssVEP). A carefully curated
set of 45 videos, designed to represent a wide range of emotional and
neutral content, were presented with a flickering border. The videos
featured a continuous single-shot perspective, natural soundtrack, and
excluded elements associated with professional films, to enhance
realism. The results demonstrate a consistent reduction in ssVEP
amplitude during emotional videos which strongly correlates with the
rated emotional intensity of the clips. This suggests that narrative
audiovisual stimuli have the potential to track dynamic emotional
processing in the cortex, providing new avenues for research in
affective neuroscience. The findings highlight the potential of using
realistic video stimuli to investigate how the human brain processes
emotional events in a paradigm that increases ecological validity.
Future studies can further develop this paradigm by expanding the video
set, targeting specific cortical networks, and manipulating narrative
predictability. Overall, this study establishes a foundation for
investigating emotional perception using realistic video stimuli and has
the potential to expand our understanding of real-world emotional
processing in the human brain.