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DTSTART:20370308T030000 RDATE:20371101T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:40db41979399e6214771a5e9a0b382b2 CATEGORIES:RuCCS Colloquia:Spring 2018 CREATED:20180119T102304 SUMMARY:The coordinated behavior of perception and action is based on a distorted representation of 3D space LOCATION:Brown University\, Department of Cognitive\, Linguistic & Psychological Sciences DESCRIPTION:Abstract: \nPerception is commonly thought of as a process solving the inve rse geometry problem: given the sensory input and prior knowledge about the world, the brain derives an accurate representation of physical reality. T his naïve realist view is also the hallmark of the dual-visual-stream theor y of perception and action: when perception is distorted because of ambiguo us or conflicting visual cues our actions seem to be accurate. In this talk I argue that both perception and action are based on the same 3D represent ation, which in general does not mirror physical reality. Instead of being distinct I propose that perception and action form a coordinated system: Pe rception informs action about the state of the world and, in turn, action s hapes perception by signaling when it is faulty. This integrated approach i s quite distinct from most investigations on perception and motor control. On the one hand, while motor errors have been studied extensively in the se nsorimotor adaptation field, they have overlooked how perception actually a ffects these errors. Indeed, I’ll show that the visual space is systematica lly distorted and that these distortions clearly surface in our actions. Re markably the arising motor errors produce motor adjustments on a trial-by-t rial basis. On the other hand, studies exploring alterations of visual perc epts following visuomotor interactions have neglected the causal role of er ror signals. Here, I will also show that persisting sensory errors signals cause a remarkable modification of space perception. In summary, contrary t o the naïve realist view and the dual-visual-stream theory, my approach reg ards perception and action as two sides of the same coin expressing a curre ncy which is not metric accuracy.\n The RuCCS Colloquia Series is orga nized by Dr. Julien Musolino and Dr. Sara Pixley. The talks are held on Tue sdays in the Psychology Building (http://maps.rutgers.edu/building.aspx?256 ), Room 101 on the Busch Campus from 1:00-2:30pm.\nNote: If you would like to receive email announcements about the colloquium series, please contact the Business Office to have your name added to our announce lists at This email address is being protected from spambots. You need JavaScript enabled to view it..\n X-ALT-DESC;FMTTYPE=text/html:
Abstract:
Perception is commonly t hought of as a process solving the inverse geometry prob lem: given the sensory input and prior knowledg e about the world, the brain derives an accurate representation o f physical reality. This naïve realist view is also the hallmark of the dual-visual-stream theory of perception and action: when pe rception is distorted because of ambiguous or conflicting visual cues our&n bsp;actions seem to be accurate. In this talk I argue that both percep tion and action are based on the same 3D representation, which in general d oes not mirror physical reality. Instead of being distinct I propose that p erception and action form a coordinated system: Perception informs action a bout the state of the world and, in turn, action shapes perception by signa ling when it is faulty. This integrated approach is quite distinct fro m most investigations on perception and motor control. On the one hand, whi le motor errors have been studied extensively in the sensorimotor adaptatio n field, they have overlooked how perception actually affects these errors. Indeed, I’ll show that the visual space is systematically distorted and th at these distortions clearly surface in our actions. Remarkably the arising motor errors produce motor adjustments on a trial-by-trial basis. On the o ther hand, studies exploring alterations of visual percepts following visuomotor interactions have neglected the causal role of error signals. He re, I will also show that persisting sensory errors signals cause a remarka ble modification of space perception. In summary, contrary to the naïve rea list view and the dual-visual-stream theory, my approach regards perception and action as two sides of the same coin expressing a currency which is no t metric accuracy.
The RuCCS Colloqui a Series is organized by Dr. Julien Musolino and Dr. Sara Pixley. The talks are held on Tuesdays in the Psychology Buildi ng, Room 101 on the Busch C ampus from 1:00-2:30pm.
Note: If you wou
ld like to receive email announcements about the colloquium series, please
contact the Business Office to have your name added to our announce lists a
t