Interdisciplinary Ph.D. Program in Cognitive
Science
UNIVERSITY OF CALIFORNIA, SAN DIEGO
Cognitive Science 200: Visual
salience: neurophysiology and models
(Section ID: 659727)
Friday afternoons, CSB 003
Student discussion session: 2-2:50PM
Public lecture: 3-4:50
Organizers: Gary Cottrell, Javier Movellan, and Mike Mozer
Fall 2009
To join the cs200 mailing list to receive
announcements
of talks, see this
instruction page. Cognitive Science 200 is an
interdisciplinary seminar of
changing topics, and is used as a mechanism for
Ph.D. students in the Interdisciplinary Ph.D. Program and in
the Cognitive Science Department to achieve breadth.
This quarter, the topic is "Visual Salience: neurophysiology and
models."
As a result of having a foveated retina, we actively move our eyes to
direct our highest resolution of visual processing towards interesting
things. In fact, we move our eyes about three times a second; it is a
decision we make about 172,000 times a day, more than any other in our
lives! How do we decide where to look? Where we look has two major
influences: 1) exogenous or "bottom-up" influences - "busy-ness" of
some sort in our visual field, such as motion or areas of high
contrast, and 2) endogenous or "top-down" influences, i.e., our current
goals or task. This quarter, COGS 200 will continue a
conversation/debate that has been going on among several researchers in
the Temporal Dynamics of Learning Center (tdlc.ucsd.edu) with somewhat
distinct models of visual salience. We have also invited researchers
with expertise in the neurophysiology of the representation of
"attention" or "salience" in the brain. Students in the course will be
required to read papers and to write a paper at the end of the quarter.
The room for Cogsci 200 is Cognitive Science Building
003. The meeting times are Fridays 2-2:50PM for registered
students, and 3:00-4:50PM for the lectures (to which the
UCSD Cognitive Science community is invited). This will be
followed usually by the cognitive science happy hour in the
cog sci building courtyard.
The graduate student section from 2-2:50 will involve the
professor using the dreaded index card method: students will
be asked questions about the papers that are intended to
generate some discussion and understanding of the
material. Students are therefore expected to have done the
reading before class. The method involves index cards with
every student's name on them. These are shuffled at the
beginning of class, and then students are asked questions in
order of their appearance on the card. The first question is
almost always, "What is the point of this paper?", and is
often asked several times until we converge on one or more
main themes of the paper.
The requirements for the class are: 1) reading
the assigned papers; 2) being able to answer questions about
them in discussion section; 3) asking the speaker a question
about 20% of the time (I'll be keeping track! I.e., you need to ask 2
questions all quarter) and 4) writing an
approximately 10 page research proposal that is of your own
choosing - it could be an extension to one of the topics
covered in the lectures, tesing a hypothesis about salience or
attention, pitting the various models against one another, etc.
It should be specific enough that there
are clear criteria for success or failure.
The draft of this is due in the 8th week, the final version
is due on the Monday of finals week.
DATE
PRESENTER
TITLE
PAPER
DISCUSSION
PAGE
SLIDES
September 25
Gary Cottrell
Organizational meeting
October 9
Lingyun Zhang (tentative)
SUN: A Bayesian framework for
Saliency Using Natural statistics
Zhang,
Lingyun, Tong, Matthew H., Marks, Tim K., Shan, Honghao, and Cottrell,
Garrison W. (2008). SUN: A Bayesian Framework for Saliency Using
Natural Statistics. Journal of Vision 8(7):32, 1-20.
Zhang,
L., Tong, M., and Cottrell, G.W. (2009) SUNDAy: Saliency Using Natural
Statistics for Dynamic Analysis of Scenes. In Proceedings of the 31st
Annual Meeting of the Cognitive Science Society.
Discuss Zhang
paper(s)
October 23
Chris Kanan
Top-down SUN.
Kanan,
C.M., Tong, M.H., Zhang, L. and Cottrell, G.W. (2009). SUN: Top-down
saliency using natural statistics. Visual Cognition 17, Issue 6 & 7
pp. 979-1003 (Special Issue on eye guidance in natural scenes (B.
Tatler, Ed.)).
A. Torralba, A.
Oliva, M. Castelhano and J. M. Henderson (2006) Contextual Guidance of
Attention in Natural scenes: The role of Global features on object
search. Psychological Review 113(4):766-786
Discuss any paper
here...
December 4
Angela Yu (UCSD)
Attentional Selection: Toward a
Rational Bayesian Account
Yu, Dayan & Cohen (2009)
Dynamics of Attentional Selection Under Conflict: Toward a Rational
Bayesian Account [
pdf]
Yu & Dayan (2004) Inference, Attention, and Decision in a Bayesian
Neural Architecture. In
Advances in
Neural Information Processing Systems (NIPS04). [
pdf]
Discuss any paper
here...
The instructor is Professor
Gary Cottrell, whose office is CSE Building room 4130.
Feel free to send email to
arrange
an appointment, or telephone (858) 534-6640.
REGISTRATION
Students may take the seminar only for four units of S/U credit.
Students should register for COGS 200, section id 659727.
If you
must have a letter
grade (because of your departmental requirements), please see me and
let me know!
Most recently updated on September 29, 2009 by Gary Cottrell, gary@ucsd.edu