Event Abstract Back to Event Cortical dynamics underlying the visual perception of stationary and moving stimuli Wenqi Sun1*, Alexander Moiseev2, Faisal Beg1, Urs Ribary1 and Naznin Virji-Babul2 1 Simon Fraser University, Canada 2 Down Syndrome Research Foundation, Canada In this study, we investigated the neural responses during the perception of stationary dots, randomly moving point light dots and point light dots representing human motion. We recorded cortical responses from ten right handed subjects with a 151 channel whole head MEG system (VSM MedTech, Coquitlam, BC). For each subject a three-dimensional spatial distribution of source activity was computed using differential SAM beamforming method. The data were spatially normalized to a common brain template and group-averaged for each condition. Locations showing statistically significant differences between conditions were chosen for time frequency analysis. We compared the random motion and human motion with the stationary display and then compared the random and human motion. Perception of random motion was associated with enhanced neural activity in alpha and beta bands in bilateral visual, parietal and MT regions, as compared with stationary dots. Perception of human motion led to enhanced neural activity in alpha and beta bands in the visual, parietal and MT areas in the right hemisphere, in comparison with random motion. Late activation in the gamma band activity was observed in both motion conditions in the visual area. In addition, the perception of human motion led to increased activity in the alpha band in the left motor region. These data suggest that (a) motion processing involves the dorsal pathways via bi-directional pathways, and (b)that action cues depicting human motion are sufficient to selectively activate premotor regions. Supported by NSERC (RGPGP/355878-2008) Conference: Biomag 2010 - 17th International Conference on Biomagnetism , Dubrovnik, Croatia, 28 Mar - 1 Apr, 2010. Presentation Type: Poster Presentation Topic: Neurocognition and Functional Connectivity Citation: Sun W, Moiseev A, Beg F, Ribary U and Virji-Babul N (2010). Cortical dynamics underlying the visual perception of stationary and moving stimuli. Front. Neurosci. Conference Abstract: Biomag 2010 - 17th International Conference on Biomagnetism . doi: 10.3389/conf.fnins.2010.06.00247 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: 31 Mar 2010; Published Online: 31 Mar 2010. * Correspondence: Wenqi Sun, Simon Fraser University, Burnaby, Canada, wsa1@sfu.ca 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 Wenqi Sun Alexander Moiseev Faisal Beg Urs Ribary Naznin Virji-Babul Google Wenqi Sun Alexander Moiseev Faisal Beg Urs Ribary Naznin Virji-Babul Google Scholar Wenqi Sun Alexander Moiseev Faisal Beg Urs Ribary Naznin Virji-Babul PubMed Wenqi Sun Alexander Moiseev Faisal Beg Urs Ribary Naznin Virji-Babul 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.