VisionScienceList: NATO ASI on Modulation in Vision

From: Giedrius T. Buracas (
Date: Sun Mar 12 2000 - 17:24:08 PST

Modulation of Neuronal Signaling:
Implications for Visual Perception

A NATO Advanced Study Institute
Nida, Lithuania,
July 12-21 , 2000

further information at:


   The flow of information reaching sensorium of living organisms is
greatly determined by patterns of their interaction with the environment.
During the last decade, the idea that perception is an active process that
depends upon an organism's behavior and knowledge of the environment has
been widely accepted. The broad acceptance of vision as an active process
is partially attributable to the accumulation of neurophysiological data
revealing many of the diverse cerebral mechanisms underlying the active
nature of visual perception. These mechanisms are thought to control the
flow of visual information while taking cognitive states and behavioral
context into account.

   The mechanisms controlling information flow in the visual system can
broadly be segregated into three groups: (I) arousal mechanisms mediated
by modulation of neural responses by ascending activating system; (II)
attention/intention mechanisms that en dow representations of visual
information with behavioral relevance; (III) cognitive contextual
mechanisms that integrate visual information based on the prior knowledge
about the structure of the environment. Presumably, the last two
mechanisms are imp lemented via cortico-cortical lateral and feedback
connections as well as through the feedback from subcortical structures.

   The goal of this ASI is to explore the role of these three fundamental
types of modulation of neuronal signaling on visual perception. The ASI
will examine recent advances in deciphering these modulatory mechanisms
and will draw implications for codin g and computational basis of visual

    The ASI will provide a medium for the interested researchers and
engineers (mainly postdoctoral and higher level) of relevant areas
(neurophysiology, cognitive neuroscience, mathematics, physics, computer
science) from both NATO and Partner States to learn about the latest
advances in neuronal visual information processing from experts of visual
neuroscience, and initiate mutual collaborative projects.


T.D. Albright, The Salk Institute, La Jolla, U.S.A.
J. Bullier, INSERM, Bron/Lyon, France
G.M. Boynton, The Salk Institute, La Jolla, U.S.A.
G.T. Buracas, The Salk Institute, La Jolla, U.S.A.
G. Einevoll, Agricultural University, Norway
P. Heggelund, Oslo University, Norway
J. Kulikowski, UMIST, Manchester, U.K.
N. Leibovic, Buffalo University, NY, U.S.A.
V. Meskenaite, Inst. fur Neuroinformatik, Switzerland
A. Parker, Oxford University, U.K.
K. Pavelzik, University of Bremen, Germany
O. Ruksenas, Vilnius University, Lithuania
C. Wehrhahn, Max Plank Institute, Tübingen, Germany
T. Villis, University of Western Ontario, Canada
A. Zador, Cold Spring Harbor Lab, Long Island, U.S.A.


The summer school will take place on July 12-21, 2000, at the hotel Urbo
Kalnas in Nida, Lithuania.

Further information at:

Address your questions to:

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