@article{ref1,
title="Shifting attention between visual dimensions as a source of switch costs",
journal="Psychological science",
year="2017",
author="Elchlepp, Heike and Best, Maisy and Lavric, Aureliu and Monsell, Stephen",
volume="28",
number="4",
pages="470-481",
abstract="Task-switching experiments have documented a puzzling phenomenon: Advance warning of the switch reduces but does not eliminate the switch cost. Theoretical accounts have posited that the residual switch cost arises when one selects the relevant stimulus-response mapping, leaving earlier perceptual processes unaffected. We put this assumption to the test by seeking electrophysiological markers of encoding a perceptual dimension. Participants categorized a colored letter as a vowel or consonant or its color as &quot;warm&quot; or &quot;cold.&quot; Orthogonally to the color manipulation, some colors were eight times more frequent than others, and the letters were in upper- or lowercase. Color frequency modulated the electroencephalogram amplitude at around 150 ms when participants repeated the color-classification task. When participants switched from the letter task to the color task, this effect was significantly delayed. Thus, even when prepared for, a task switch delays or prolongs encoding of the relevant perceptual dimension.<p /> <p>Language: en</p>",
language="en",
issn="0956-7976",
doi="10.1177/0956797616686855",
url="http://dx.doi.org/10.1177/0956797616686855"
}