Visual mismatch negativity and categorization.
Visual mismatch negativity (vMMN) component of event-related potentials is elicited by stimuli violating the category rule of stimulus sequences, even if such stimuli are outside the focus of attention. Category-related vMMN emerges to colors, and color-related vMMN is sensitive to language-related effects. A higher-order perceptual category, bilateral symmetry is also represented in the memory processes underlying vMMN. As a relatively large body of research shows, violating the emotional category of human faces elicits vMMN. Another face-related category sensitive to the violation of regular presentation is gender. Finally, vMMN was elicited to the laterality of hands. As results on category-related vMMN show, stimulus representation in the non-conscious change detection system is fairly complex, and it is not restricted to the registration of elementary perceptual regularities.
Institute of Cognitive Neuroscience and Psychology, Centre for Natural Sciences, Hungarian Academy of Sciences, P.O.Box 398, Budapest, 1394, Hungary, czigler.istvan@ttk.mta.hu.
István
I
Czigler
D001288:Attention / Q000502:physiology; D003118:Color Perception / Q000502:physiology*; D004644:Emotions / Q000502:physiology*; D005074:Evoked Potentials, Visual; D006801:Humans; D014796:Visual Perception / Q000502:physiology*