Hi I’m not sure this explains things like the effect of prior stimuli on perception of ambiguous figures like the rat-man, which is differently interpreted depending on prior sequence of animals or faces.
Jim [Description: percpetual set expectation] Jim Clark Professor & Chair of Psychology University of Winnipeg 204-786-9757 Room 4L41 (4th Floor Lockhart) www.uwinnipeg.ca/~clark<http://www.uwinnipeg.ca/~clark> From: Michael Scoles [mailto:micha...@uca.edu] Sent: Tuesday, February 09, 2016 10:46 AM To: Teaching in the Psychological Sciences (TIPS) Subject: Re: [tips] bottom up processing in humans My first guess wasn't that good. On pages 246-249 of "The senses considered as perceptual systems," Gibson discusses reversible figure ground and impossible (Escher-type) figures. His explanation is that the same stimulus can provide equivocal information. In natural settings, children and adults learn which sources of information should be attended to. On Mon, Feb 8, 2016 at 6:47 PM, Michael Scoles <micha...@uca.edu<mailto:micha...@uca.edu>> wrote: My first guess is that the observer normally moves. On Feb 8, 2016 6:39 PM, "Michael Scoles" <micha...@uca.edu<mailto:micha...@uca.edu>> wrote: He has a chapter on it. Not sure which book, but it is in my office. I'll try to remember to look it up in the morning. On Feb 8, 2016 4:59 PM, "Jim Clark" <j.cl...@uwinnipeg.ca<mailto:j.cl...@uwinnipeg.ca>> wrote: And how would Gibson explain ambiguous stimuli where the identical input gives rise to different interpretations? Jim Sent from my iPhone On Feb 8, 2016, at 3:51 PM, "Michael Scoles" <micha...@uca.edu<mailto:micha...@uca.edu>> wrote: Gibson would argue that, unless by "past experience" you mean biological evolution in environments that structure energy, the necessary information for perception is readily available from that structure (e.g., texture gradients, kinetic optical occlusion). On Mon, Feb 8, 2016 at 2:55 PM, Stuart McKelvie <smcke...@ubishops.ca<mailto:smcke...@ubishops.ca>> wrote: Dear Tipsters, I like D. O. Hebb's distinction between sensation and perception as a way of distinguishing bottom-up and top-down processing. Hebb defines sensation as activity in the sense organ and corresponding sensory receiving areas of the brain. You can easily illustrate this with a diagram, say for the visual system. Perception is then what occurs when this information is sent on to other parts of the brain and interpreted in the light of context and past experience (top-down processing). Sincerely, Stuart ___________________________________________________________________________ "Floreat Labore" "Recti cultus pectora roborant" Stuart J. McKelvie, Ph.D., Phone: 819 822 9600 x 2402<tel:819%20822%209600%20x%202402> Department of Psychology, Fax: 819 822 9661<tel:819%20822%209661> Bishop's University, 2600 rue College, Sherbrooke, Québec J1M 1Z7, Canada. E-mail: stuart.mckel...@ubishops.ca<mailto:stuart.mckel...@ubishops.ca> (or smcke...@ubishops.ca<mailto:smcke...@ubishops.ca>) Bishop's University Psychology Department Web Page: http://www.ubishops.ca/ccc/div/soc/psy Floreat Labore" ___________________________________________________________________________ -----Original Message----- From: Annette Taylor [mailto:tay...@sandiego.edu<mailto:tay...@sandiego.edu>] Sent: February-08-16 3:49 PM To: Teaching in the Psychological Sciences (TIPS) Subject: [tips] bottom up processing in humans I am having a bit of a hard time this year answering questions about bottom up processing. Student question: How can it be truly bottom up if it requires a comparison to a stored image? Isn't that like top-down? You use the stored image to recognize what it is that is coming in. How are these actually different? I did have a response but I want to withhold it from here so not to bias responses from the list. Student question: Is there any real life example of people using template models of pattern recognition? If not, why did they even get developed as models of human pattern recognition? My answer here was really lame, IMHO so I am looking for a better one but as above, don't want to bias responses. Maybe I'm particular brain dead that these two stumped me. Annette Annette Kujawski Taylor, Ph. D. Professor, Psychological Sciences University of San Diego 5998 Alcala Park San Diego, CA 92110 tay...@sandiego.edu<mailto:tay...@sandiego.edu> --- You are currently subscribed to tips as: smcke...@ubishops.ca<mailto:smcke...@ubishops.ca>. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13510.2cc18398df2e6692fffc29a610cb72e3&n=T&l=tips&o=48095 or send a blank email to leave-48095-13510.2cc18398df2e6692fffc29a610cb7...@fsulist.frostburg.edu<mailto:leave-48095-13510.2cc18398df2e6692fffc29a610cb7...@fsulist.frostburg.edu> --- You are currently subscribed to tips as: micha...@uca.edu<mailto:micha...@uca.edu>. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=357701.a768e95c4963686e69b47febf8aa657a&n=T&l=tips&o=48096 or send a blank email to leave-48096-357701.a768e95c4963686e69b47febf8aa6...@fsulist.frostburg.edu<mailto:leave-48096-357701.a768e95c4963686e69b47febf8aa6...@fsulist.frostburg.edu> -- Michael T. Scoles, Ph.D. Associate Professor of Psychology & Counseling University of Central Arkansas Conway, AR 72035 501-450-5418<tel:501-450-5418> --- You are currently subscribed to tips as: j.cl...@uwinnipeg.ca<mailto:j.cl...@uwinnipeg.ca>. 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