@article{ref1,
title="Time-intensity relation in visual perception as function of observers task",
journal="Journal of experimental psychology",
year="1964",
author="Kahneman, Daniel and Norman, Joel",
volume="68",
number="3",
pages="215-220",
abstract="The duration-intensity relationship was investigated for a task in which triads of digits were to be identified. Critical durations (tc) of 200-350 msec. were found for 5 Ss. Under identical stimulus conditions tc for subjective brightness, determined by a matching method, was about 100 msec. for 2 of the Ss. It was concluded that tc varies as a function of perceptual task and that it does not represent the duration of an early &quot;sensory&quot; phase of the visual process. (21 ref.) (PsycINFO Database Record (c) 2012 APA, all rights reserved)<p /><p>Language: en</p>",
language="en",
issn="0022-1015",
doi="10.1037/h0046097",
url="http://dx.doi.org/10.1037/h0046097"
}