[visionlist] immunity from illusions (particularly visual illusions)

Tom Freeman FreemanT at cardiff.ac.uk
Mon Feb 13 08:34:05 -05 2017

As Qaisim says, individual differences in illusions/perceptual biases have been neglected (as IDs in perception have in general).

Grist to the mill: Georgie Powell and I have just published an account of individual differences in two well-known motion illusions, based on differences in certain features of motion priors, as well as differences in motion sensitivity.


Cheers Tom

School of Psychology
Tower Building
Park Place
Cardiff CF10 3AT UK

-----Original Message-----
From: visionlist [mailto:visionlist-bounces at visionscience.com] On Behalf Of Michael Herzog
Sent: 12 February 2017 17:33
To: Qasim Zaidi <qz at sunyopt.edu>; moorek at arcadia.edu
Cc: visionlist at visionscience.com
Subject: Re: [visionlist] immunity from illusions (particularly visual illusions)

Dear All
We just recently reported that there are few significant correlations between illusion magnitudes: https://www.ncbi.nlm.nih.gov/pubmed/27919676
Thus, maybe just an instantiation of variability......
All the best

Qasim Zaidi wrote:
> There are individual differences, but they have not been much studied 
> until the recent push by Jeremy Willmer at VSS.
> I had a brilliant undergraduate at Columbia, who went on to be a star 
> grad student at MIT, has done start-ups, been CTO of multiple 
> companies, won an Emmy, etc etc, and he had no simultaneous brightness 
> or color induction, as measured by objective methods (nulling on a 
> 2AFC adaptive staircase).  He was also a meticulous observer in motion 
> experiments, where he saw all kinds of effects.
> You may want to see what else is different about these students.  I 
> suspect that they will be normal on low level detection and 
> discrimination experiments, but that may still be worth checking.
> Cheers
> QZ
> Qasim Zaidi PhD
> SUNY Distinguished Professor
> Graduate Center for Vision Research,
> State University of New York College of Optometry,
> 33 West 42nd St, New York, NY  10036.
> Office: 212-938-5542; Lab: 212-938-5756; Fax: 212-938-5537
> E-mail: qz at sunyopt.edu <mailto:qz at sunyopt.edu> 
> http://poseidon.sunyopt.edu/Zaidi/index.php
> *"Dr. Katherine Moore" <moorek at arcadia.edu 
> <mailto:moorek at arcadia.edu>>
> writes:*
> Dear vision experts,
> I was hoping some of you could help me out with something that made me 
> curious all of last semester. Last semester was about the fifth time 
> I've taught Sensation & Perception. Even though my classes are small 
> (less than 25 students), each time I teach this course I have a 
> student or two who is unusual in some sensory way -- just one working 
> eye, synesthesia, no sense of smell, blind, prosopagnosia, etc.
> This past semester I had two students who did not experience illusions 
> (out of just 10 students!) One of them truly did not experience any of 
> the illusions. Another did not experience the vast majority of them. 
> We mostly did visual illusions, but among the few auditory illusions 
> we did, these students didn't experience them either. I have no reason 
> to think the students were lying about it--they are very sincere people.
> And they both had trouble with an assignment that required students to 
> view some new illusions, describe what they saw and what was really 
> happening, and explain the illusion. These two students didn't see 
> what the rest of the class saw, and only saw "what was really happening."
> The illusions spanned the course, which is to say they touched upon 
> many different causes. For example, the Hermann grid variations, 
> including the "disappearing dots" one that went viral this summer/fall 
> were affected, as well as the color constancy and size constancy ones 
> like the checkershadow illusion, Ames room, etc.
> What do you all know about this, like what the cause could be for this 
> immunity from illusions of many kinds, or individual variation in the 
> experience of illusions?
> Best,
> Katherine
> Katherine S Moore
> Assistant Professor of Psychology
> Arcadia University
> 450 S. Easton Rd
> Glenside, PA 19038
> Office: Boyer Hall room 128
> Phone: (215) 517-2429
> https://sites.google.com/a/arcadia.edu/amclab/
> _______________________________________________
> visionlist mailing list
> visionlist at visionscience.com
> http://visionscience.com/mailman/listinfo/visionlist_visionscience.com

visionlist mailing list
visionlist at visionscience.com

More information about the visionlist mailing list