lecture12-08 - Control of Attention and Gaze in Natural...

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Unformatted text preview: Control of Attention and Gaze in Natural Environments Hum a ns m us t s e le c t a lim ite d s ub s e t o f the a va ila b le info rm a tio n in the e nviro nm e nt. Fundamental Constraints Atte ntio n is lim ite d. Vis ua l Wo rking Me m o ry is lim ite d. O nly a lim ite d a m o unt o f info rm a tio n c a n b e re ta ine d. Video S im o ns (2000) Change Blindness : ins e ns itivity to c ha ng e s in vis ua l s c e ne s m a de during a n e ye m o ve m e nt/tra ns ie nt o c c lus io n. C ha ng e b lindne s s c ha lle ng e s ide a tha t pe rc e ptio n de live rs a c o m pre he ns ive re pre s e nta tio n o f wo rld. Wha t is re pre s e nte d? Atte nde d o b je c ts /re g io ns o f c e ntra l inte re s t? Vision = looking at pictures? Image properties e.g. contrast, edges, chromatic saliency can account for some fixations when viewing images of scenes Saliency and capture by sudden onsets may be unreliable.- Multiple salient objects may be present in the scene-Task relevant objects may not be visually salient - Sudden onsets are rare in normal viewing.- Image onsets/offset caused by self motion. Cognitive goals also account for many of the fixations in natural behavior. Foot placement Obstacle avoidance Heading Viewing pictures of scenes is different from acting within scenes. A Model of Driving...
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This note was uploaded on 08/12/2008 for the course PSY 341K taught by Professor Gilden during the Spring '08 term at University of Texas at Austin.

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lecture12-08 - Control of Attention and Gaze in Natural...

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