Title |
Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects
|
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Published in |
BMC Neuroscience, May 2006
|
DOI | 10.1186/1471-2202-7-37 |
Pubmed ID | |
Authors |
Uwe Mattler, Arie van der Lugt, Thomas F Münte |
Abstract |
When subjects use cues to prepare for a likely stimulus or a likely response, reaction times are facilitated by valid cues but prolonged by invalid cues. In studies on combined expectancy effects, two cues can independently give information regarding two dimensions of the forthcoming task. In certain situations, cueing effects on one dimension are reduced when the cue on the other dimension is invalid. According to the Adjusted Expectancy Model, cues affect different processing levels and a mechanism is presumed which is sensitive to the validity of early level cues and leads to online adjustment of expectancy effects at later levels. To examine the predictions of this model cueing of stimulus modality was combined with response cueing. |
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