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- W2073647575 abstract "The effects of choice complexity on different subcomponents of the late positive complex were investigated. In a previous choice reaction study, two subcomponents of this complex were identified, called P-SR and P-CR, which seem to be related to stimulus evaluation and response selection, respectively. The present study attempts to show the dependence of the P-CR (and the independence of the P-SR) on response selection by manipulating response selection complexity. This was done by having the subjects perform either 2-way or 4-way choice reactions to single letter stimuli. To enhance the discriminability of P-SR and P-CR, visual and auditory stimuli were used, since the P-SR is modality-dependent. Moreover, the stimulus modalities were mixed (divided attention paradigm), which was expected to lead to a dissociation of P-SR and P-CR, especially after auditory stimuli. The choice reaction times were about 100 msec longer for difficult than for easy choices. The main ERP result was a 65 msec increase of the P-CR latency for the difficult as compared to the easy choice, while the P-SR latency remained constant. The P-CR latency difference precisely matched the onset difference of the lateralized readiness potential. The P-SR showed a modality-dependent latency and topography, while the P-CR did not. The present data confirm the close relation of one subcomponent of the late positive complex, the P-CR, to the cognitive response-selection process." @default.
- W2073647575 created "2016-06-24" @default.
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- W2073647575 date "1994-03-01" @default.
- W2073647575 modified "2023-09-24" @default.
- W2073647575 title "Effects of choice complexity on different subcomponents of the late positive complex of the event-related potential" @default.
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- W2073647575 doi "https://doi.org/10.1016/0168-5597(94)90055-8" @default.
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