Expectancy and response strategy in a three-choice visual task

Journal article


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Publication Details

Author list: Maestu F
Publisher: Elsevier
Publication year: 1996
Volume number: 99
Issue number: 5
Start page: 491
End page: 493
Number of pages: 3
ISSN: 0013-4694
Languages: English-Great Britain (EN-GB)


We investigated the relationship between sensorial discrimination and
motor response by means of movement-related potentials, in a task where
subjects had to discriminate between 3 Stimuli presented visually in a
random way. The results indicate that subjects anticipate the response
to each type of stimulus by following a probabilistic criterion in the
absence of a warning stimulus. This criterion entails an erroneous
lateralization of cerebral activation and a significant increase in
reaction time, despite the reduction of errors.


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Last updated on 2019-13-08 at 00:45