[visionlist] Sad news of George McConkie's passing
francoise.vitu-thibault at univ-amu.fr
Fri Apr 23 13:33:33 -04 2021
Thanks a lot, Lester, for this very nice tribute to George.
George McConkie was indeed an exceptional scientist, humble, honest,
generous, meticulous, and inventive. I had the honor to work with him
for several years, first as a postdoc, and then as a visiting researcher
at the Beckman Institute in Urbana-Champaign. We collaborated and stayed
in contact for many years, and it was a great pleasure for me to last
organize a symposium in his honor at ECEM 2011, here in Marseille, and
allow him to get together with several of his former Phd students and
postdocs, and many of his friends. Unfortunately, this is when we last
saw each other.
It would take too long to list all the things I learned from working
with George, but he certainly did inspire me a lot; he helped me putting
all my ideas together and making them grow, always reminding me to see
the other side of things. George also contributed to make me grow
personally by teaching me wisdom, simplicity, and humbleness.
George is a huge loss for our community. However, his unmissable and
incommensurable contribution to vision, eye-movement, and reading
research will make him eternal. And we will always remember the
gentleman he was.
Le 22/04/2021 à 04:54, Lester Loschky a écrit :
> Dear Colleagues,
> It is with great sadness that I share the news of George McConkie's
> passing on April 17, 2021. He had been battling Parkinson's disease
> for over a decade, and was also battling cancer. He died at home
> surrounded by his family members.
> George will be remembered for a long time for his contributions to the
> study of reading, visual cognition, and the critical roles played by
> eye movements in both. His career spanned roughly 30 years, from the
> early 1960s to the mid 2000s. I was lucky enough to have him as my
> mentor towards the end of his career.
> In the mid 1970s, George and his graduate student Keith Rayner
> developed the gaze-contingent methodology and measures of
> the perceptual span in reading, and their results revolutionized our
> understanding of the processes of reading. They showed that readers
> of English extract information asymmetrically around the point of
> fixation, from 8-12 letters to the right of fixation, and 4-6 to the
> left, or, more generally, from the upcoming word to the right.
> Further work by George, Keith, and their colleagues and students, used
> this methodology to further delineate precisely what sorts of
> information the reader is able to pick up from the to-be-fixated word.
> Later, in the 1980s, together with his graduate students David Zola
> and Gary Wolverton, George showed that the theory of the visual
> integrative buffer could not explain perceptual stability across
> fixations. George first showed that by having people read text
> written in alternating upper and lower case letters, and
> gaze-contingently changing the case of every letter (e.g., WoRd ->
> wOrD), each time readers made a saccade. This complete change of all
> perceptual information in the text across fixations did not cause the
> predicted catastrophic disruption of reading. Far from it, readers
> didn't notice the perceptual changes across fixations at all,
> suggesting that rather than perceptual information being carried
> across saccades, it was identity information.
> In the early 1990s, George then decided to test the same idea with
> scenes, by changing pairs of photographs that differed in key details
> (e.g., in a photo of two men, swapping their heads). He made those
> changes during viewers' saccades, and asked them to press a button if
> they noticed any changes. To everyone's surprise, many people
> completely missed the changes for long periods of time. When George's
> graduate student John Grimes presented their results at a Cognitive
> Science conference in Vancouver, a low-tech demonstration without
> eyetracking during the talk caused a great stir among the audience.
> From that work, the phenomenon soon after to be named "Change
> Blindness" was born.
> George and his graduate student Chris Curry followed that up by
> developing the Saccade Target Theory of perceptual stability across
> saccades. To test that theory, when viewers made a saccade towards a
> target object in a complex natural scene, they would either move the
> entire scene image, the entire scene background, or just the target
> object, a bit further away in the direction of the saccade. They
> found neither moving the entire scene, nor the entire background were
> commonly detected, but that moving only the saccade target was. This
> suggested that the saccade target has a special status in maintaining
> visual stability across saccades.
> Towards the end of his career, George and his graduate student Shunnan
> Yang also caused a stir in the eye movements and reading community by
> showing that for a moderate population of relatively short duration
> fixations, the recognizability of a fixated word seemed to play no
> role in determining readers' fixation durations. They showed that by
> having people read pages of text, and occasionally, for a single eye
> fixation, changing all of the letters on the page to random letters
> (among other various manipulations). They found that for fixations <
> 200 ms in duration, fixating on a word composed of random letters had
> no impact on that fixation's duration.
> George also influenced a much larger group of graduate students,
> post-docs, and colleagues, around the world, from the US, to Europe,
> and China. He played a key role in generating greater interest in
> using eye movements to study perceptual and cognitive processes.
> George was always a soft spoken, kind, and patient mentor, colleague,
> and friend.
> George was also an important and caring member of his religious
> community, which was always very important to him. And most
> importantly to him, he was a devoted father, grandfather, and great
> grandfather to a large and loving family.
> George will be sadly missed by all who knew him.
> Les Loschky
> Lester Loschky
> Associate Director, Cognitive and Neurobiological Approaches to
> Plasticity Center
> Department of Psychological Sciences
> 416 Bluemont Hall
> 1114 Mid-Campus Dr North
> Kansas State University
> Manhattan, KS 66506-5302
> email: loschky at ksu.edu <mailto:loschky at ksu.edu>
> research page:
> lab page: http://www.k-state.edu/psych/vcl/index.html
> Pronouns: he, him, his
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Laboratoire de Psychologie Cognitive,
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13331 Marseille Cedex 03, France.
Francoise.Vitu-Thibault at univ-amu.fr
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