Estimation of Emotional Arousal Changes of a Group of Individuals during Movie Screening Using Steady-State Visual-Evoked Potential
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modified on 2022-05-02, 16:12 <p>Neurocinematics
is an emerging discipline in neuroscience, which aims to provide new filmmaking
techniques by analyzing the
brain activities of a
group of audiences. Several neurocinematics studies attempted to track temporal changes in
mental states during movie screening; however, it is still needed to develop efficient
and robust electroencephalography (EEG) features for tracking brain
states precisely over a long period. This study proposes a novel method for
estimating emotional arousal changes in a group of individuals during movie
screening by employing steady-state visual evoked potential (SSVEP), which is a
widely used EEG response elicited by the presentation of periodic visual
stimuli. Previous studies have
reported that the emotional arousal of each individual modulates the strength of SSVEP responses. Based on
this phenomenon, movie clips were superimposed on a background, eliciting an SSVEP response with a specific frequency. Two
emotionally arousing movie clips were presented to six healthy male
participants, while
EEG signals were recorded from the occipital channels. We then investigated whether the movie scenes that
elicited higher SSVEP responses coincided well with those rated as the most impressive scenes by 37 viewers in a separate
experimental session. Our results showed that the SSVEP response averaged
across six participants could accurately predict the overall impressiveness of
each movie, evaluated with a much larger group of individuals. </p>
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