BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Talks.cam//talks.cam.ac.uk// X-WR-CALNAME:Talks.cam BEGIN:VEVENT SUMMARY:Seeing in depth: computations and cortical networks - Dr Andrew We lchman\, Wellcome Trust Senior Research Fellow &\; Reader in Sensory Ne uroscience\, School of Psychology\, University of Birmingham DTSTART:20121102T163000Z DTEND:20121102T180000Z UID:TALK38927@talks.cam.ac.uk CONTACT:Louise White DESCRIPTION:Human perception is remarkably flexible: we experience vivid 3 -D structure under diverse conditions from the seemingly random dots of a ‘magic eye’ stereogram to the aesthetically beautiful\, but obviously flat\, canvasses of the Old Masters. How does the brain achieve this appar ently effortless robustness? Using modern brain imaging methods we are beg inning to unpick how different parts of the visual cortex support 3-D perc eption\, tracing different computations in the dorsal and ventral pathways . In this talk I will describe work that combines behaviour\, fMRI\, TMS a nd computational analysis. By integrating these methods\, I will suggest a division of labour between the processing streams that reflects the diffe rent computational goals of (a) maximising separation of signals and (b) r educing variance of estimators.\n \nBiography\nAndrew Welchman is a Wellco me Trust Senior Research Fellow in the School of Psychology\, University o f Birmingham. He obtained his undergraduate degree in Psychology at Durham University\, and worked on perceptual filling-in and completion for his P hD (University of Newcastle). Thereafter he was an Alexander von Humboldt fellow at the Max Planck Institute for Biological Cybernetics (Germany) wh ere he worked on Bayesian modelling and fMRI. He returned to the UK as a B BSRC David Phillips Fellow in 2005\, and took up his Wellcome fellowship i n 2011. He was awarded the Applied Vision Association’s Marr Medal in 20 10. His active research interests include visual and multisensory percepti on\, rivalry and ambiguity\, brain imaging\, computational modelling and m ovement control.\n\n\n\n LOCATION:Ground Floor Lecture Theatre\, Department of Psychology END:VEVENT END:VCALENDAR