Visual mismatch negativity (vMMN) as revealed by analysis of oscillatory activity

Abstract

Event Abstract Back to Event Visual mismatch negativity (vMMN) as revealed by analysis of oscillatory activity Kairi Kreegipuu1*, N. Kuldkepp1, A. Raidvee1, T. Mogom1, M. Tamm1, J. Allik1 and Risto Näätänen1, 2, 3 1 Institute of Psychology, University of Tartu, Estonia 2 Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland 3 Center for Functionally Integrative Neuroscience, Aarhus University, Denmark In terms of irresistibility of the sensory input, the most similar to auditory stimulation is visual motion information (especially speed and direction) that has also found to give a nice visual MMN (vMMN) response. In this study, (12 participants, 14 active electrodes) we obtained vMMN to the difference in a direction of a rhythmically moving (200 ms in motion, 600 ms stationary) striped background (0.65 c/deg sine grating, luminance range 0.13-128.2 cd/m2, eccentricity 5.23 deg, velocity 1.6 deg/s). Proportion of standard motions (directed rightwards) was 85%. Observer’s main task was to react manually to the motion onset of a circular target area (sine grating similar to the background, diameter 8.26 deg, velocity 0.6 deg/s, equal left-right probability). Attention was controlled by asking either (1) to ignore the background (“ignore” condition); or (2) to press left or right button depending on whether target and background were moving into the same or opposite directions (“attended” condition). Brain electrical activity that is picked up from scalp reflects presumably post-synaptic activity of cortical pyramidal cells and may also have a thalamic contribution. Specific spectral content of the activity hypothetically indicates what processes and structures are involved. In this study, we performed a time-frequency analysis (continuous wavelet analysis, CWT, Analyzer 1.05) on segmented data (-500 … 1300 ms relative to background motion onset) to describe how oscillatory neural activity (up to 45 Hz) changes as a function of standard/deviant stimulus and ignore/attended condition. Averaged CWTs (Morlet c=5, 0.1-45 Hz, 40 frequency steps) were compared in a repeated measures t-test with following main results: (1) the main difference between ignore vs. attended condition lied in more prominent higher frequency for the attended condition (>20 Hz) activity (especially in frontal electrodes F3, Fz, Fpz) that speaks for more cognitive effort, top-down modulation, and awareness of stimuli; (2) processing of deviant vs. standard stimulus tended to deviate earlier (sometimes at first milliseconds already - at O1,O2, P4, F4, T6), for lower frequencies (<20 Hz), and more in ignore than in attended condition. Conference: MMN 09 Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications, Budapest, Hungary, 4 Apr - 7 Apr, 2009. Presentation Type: Poster Presentation Topic: Poster Presentations Citation: Kreegipuu K, Kuldkepp N, Raidvee A, Mogom T, Tamm M, Allik J and Näätänen R (2009). Visual mismatch negativity (vMMN) as revealed by analysis of oscillatory activity. Conference Abstract: MMN 09 Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications. doi: 10.3389/conf.neuro.09.2009.05.052 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 24 Mar 2009; Published Online: 24 Mar 2009. * Correspondence: Kairi Kreegipuu, Institute of Psychology, University of Tartu, Tartu, Estonia, kairi.kreegipuu@ut.ee Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Kairi Kreegipuu N. Kuldkepp A. Raidvee T. Mogom M. Tamm J. Allik Risto Näätänen Google Kairi Kreegipuu N. Kuldkepp A. Raidvee T. Mogom M. Tamm J. Allik Risto Näätänen Google Scholar Kairi Kreegipuu N. Kuldkepp A. Raidvee T. Mogom M. Tamm J. Allik Risto Näätänen PubMed Kairi Kreegipuu N. Kuldkepp A. Raidvee T. Mogom M. Tamm J. Allik Risto Näätänen Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.