From ed.vessel at nyu.edu Fri Sep 28 17:03:22 2012 From: ed.vessel at nyu.edu (Ed Vessel) Date: Fri, 28 Sep 2012 17:03:22 -0400 Subject: [CBIAnnounce] CBI User Meeting: Xing Tian Oct. 5, plus Fall 2012 Schedule Message-ID: <15B9B0ED-AEBA-4F9B-9C09-81CB086FB284@nyu.edu> NYU Center for Brain Imaging Fall 2012 Speaker Series Friday, October 5 3- 4:30pm Meyer 815 Xing Tian (Postdoctoral Research Scholar, Poeppel Lab) "Using Mental Imagery of Speech Paradigms to Investigate the Mechanisms of Internal Simulation and Estimation" Prediction, a function of ?looking into the future?, is of great significance in everyday life. In the field of motor control, the predictive function has been described as internal forward models. The core presupposition of this model is that sensory consequences can be predicted by internally simulating a copy of planned motor commands (efference copies). In the context of speech production, I further propose that the somatosensory and auditory consequences of planned articulation can be sequentially estimated from the internal simulation of motor commands. The present study employed MEG and mental imagery paradigms to investigate the neural mechanism of internal simulation and estimation. During the experiment the participants imagined speaking a syllable. An auditory-like pattern was observed over temporal regions at ~170 ms after the onset of a parietal pattern. The sequence of these distinct response patterns offers preliminary support for the proposed sequential estimation. In a follow-up cross-modal adaptation study, mental imagery of speech modulated subsequent auditory perception, which probed the functional specificity of neural representation for auditory estimation. I also discuss an fMRI study that offers tantalizing hints of neural networks mediating the internal simulation and estimation during mental imagery of speech. NOTE: Food will be served (while it lasts!), and beer will be available for those able to contribute towards the "beer fund" ** Please also mark your calendars for the following future dates: October 19: TBA November 2: Brice Kuhl (new member of the Psychology Department) Decoding task and feature representations during task switching December 7: David Putrino (Pesaran Lab) For more information and directions visit http://cbi.nyu.edu -- Ed Vessel Center for Brain Imaging New York University ed.vessel at nyu.edu 4 Washington Place, Rm. 156 New York, NY 10003 http://www.cns.nyu.edu/~vessel (212) 998-8217 -------------- next part -------------- An HTML attachment was scrubbed... URL: