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What controls attention in natural environments |
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@Article{Shinoda:01,
author = {Hiroyuki Shinoda and Mary M. Hayhoe and Anurag Shrivastava},
title = {What controls attention in natural environments},
journal = {Vision Research},
year = {2001},
number = {41},
pages = {3535 - 3546},
abstract = {The highly task-specific fixation patterns
revealed in performance of natural tasks demonstrate the
fundamentally active nature of vision, and suggest that in
many situations, top-down processes may be a major
factor in the acquisition of visual information.
Understanding how a top-down visual system could
function requires understanding the mechanisms that
control the initiation of the different task-specific
computations at the appropriate time. This is particularly
difficult in dynamic environments, like driving, where
many aspects of the visual input may be unpredictable.
We therefore examined drivers' ability to detect Stop
signs in a virtual environment when the signs were visible
for restricted periods of time. Detection performance is
heavily modulated both by the instructions and the local
visual context. This suggests that visibility of the signs
requires active search, and that the frequency of this
search is influenced by learnt knowledge of the
probabilistic structure of the environment. }
}