Mismatch negativity (MMN) for sequences of auditory and visual stimuli: evidence for a mechanism specific to the auditory modality |
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| Institution: | 1. Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Israel;2. The Wellcome Trust Centre for Neuroimaging, Institute of Neurology, UCL, London, UK;3. Institute for Psychiatric Studies, Sha''ar Menashe Mental Health Center, Hadera, Israel;4. B Rappaport Faculty of Medicine, Technion, Haifa, Israel;5. Department of Physical Education, University of A Coruña, La Coruña, Spain;1. Queensland Brain Institute, The University of Queensland, Australia;2. School of Information Technology and Electrical Engineering, The University of Queensland, Australia;3. School of Psychology, The University of Queensland, Australia;4. School of Psychology, University of Newcastle, Callaghan, New South Wales, Australia;5. Priority Centre for Brain and Mental Health Research, University of Newcastle, Newcastle, New South Wales, Australia;6. Max-Planck UCL Centre for Computational Psychiatry and Ageing Research, University College London, UK;7. Department of Computer Science, University College London, UK;8. School of Mathematics and Physics, The University of Queensland, Australia;9. Centre for Advanced Imaging, The University of Queensland, Australia;10. ARC Centre for Integrative Brain Function, Australia |
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| Abstract: | ERPs to sequences of standard and deviant sinusoidal 100 msec tone pips, high-contrast sinusoidal gratings and to their simultaneously presented combinations were recorded. Mismatch negativity (MMN), an ERP component elicited by deviant stimuli, was estimated for the different stimulus sequences in order to find out whether it reflects modality-specific processes or non-specific attentive phenomena. In addition to the auditory modality, we studied whether the mismatch response could be evoked by a deviant visual stimulus in a visual sequence or by a deviant stimulus in either modality. The results show that only auditory stimuli produced the mismatch response, suggesting that MMN is not a manifestation of a general attentional mechanism but is probably specific to the auditory modality. |
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