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Left: Gabor filtered time course of 6 Hz SSVEP amplitudes for the stream of unpleasant and neutral pictures with a change in emotional content (upper panel) and without such a change (lower panel). Time point zero shows the onset of change in emotional content. Right: The grand average of 6 Hz SSVEP amplitude across all subjects and conditions for the time period of 1 sec before and 2 after the change in emotional content.
