[koglist] Ápr. 26. PPKE-ITK idegtudományi ea. - Prof. D. Melcher - visual stability across saccades

Kedves Kollegák! Normal 0 21 false false false MicrosoftInternetExplorer4 Várunk minden érdeklődőt a PPKE-ITK soronkövetkező előadására! Időpont: Kedd, ápr. 26. 16h Helyszín: Pázmány P. Kat. Egyetem - ITK (1083, Práter utca 50/a) Kari Tanácsterem (204-es szoba) Prof. David Melcher, PhD associate professor Center for Mind/Brain Sciences (CIMeC) University of Trento Italy http://www.unitn.it/en/cimec/11705/david-melcher Visual stability across saccadic eye movements When looking around a scene, people typically make 2 - 3 rapid, ballistic eye movements ("saccades") in order to bring their gaze to bear on objects of interest. A basic question in visual neuroscience is how information is combined across separate glances into a stable, continuous percept. Previous explanations have included theories such as integration in a trans-saccadic buffer or storage in short-term visual memory, or, on the contrary, the idea that perception begins anew with each fixation. Converging evidence from primate neurophysiology, human psychophysics and neuroimaging suggest a new explanation for smooth and stable perception. We argue that the intention to make a saccadic eye movement initiates a series of preparations in the brain that lead to a fundamental alteration in visual processing before, during and after the saccadic eye movement. The goal of these transformations is to yield continuous perception of coherent events that span across the saccade. This theory of “trans-saccadic perception” may help to explain how it is possible—despite discrete sensory input and limited memory—that conscious perception across saccades appears stable, predictable and continuous. Az előadás után kötetlen beszélgetésre invitáljuk Önöket! Szervezők