Abstract: A control device (1) is disclosed for controlling a playback device (11), which is designed for playing back pictorial content on a display means (111) of the playback device (11) to generate visual stimuli (2) for a person (3). The control device comprises: an acquisition device (13), which is designed to acquire person-related data (131-1; 133-1), which are indicative of at least one symptom of the person (3), and to provide an acquisition result (13-1) depending on the person-related data; a controller (14), which is designed to determine at least one value of a playback parameter set (14-1) depending on the acquisition result; and a control unit (12), which is designed to control the playback of pictorial content (12-1), which is parameterized depending on the playback parameter set (14-1) determined with respect to value.