RT journal article
T1 P3a and P3b components associated to the neurocognitive evaluation of invalidly cued targets
A1 Gómez-González, CM
A1 Flores , A
A1 Digiacomo, MR
A1 Ledesma, A
A1 González Rosa, Javier Jesús
A2 Psicología
K1 Spatial cueing
K1 P3a
K1 P3b
K1 Trial evaluation
K1 Invalid cues
K1 Subjective probability
AB The present report focuses on evaluating the neurocognitive consequences of the correct or incorrect spatial prediction induced by a spatial cue. Positions in the vertical meridian were cued in order to evaluate the cognitive consequences in the processing of the validly (VC) or invalidly cued (IC) targets. The behavioural responses and the 64 EEG channel were recorded. The late endogenous event-related potential (ERP) induced by target stimuli in VC and IC targets were compared in voltage amplitude, voltage and current source density topographies. The P3a and a late positive complex, possibly P3b were increased in a statistically significant manner in the IC targets with regard to the VC targets. The previous result suggests that subjects prepare to accomplish the task upon specification of the cue, and when the IC target appeared it is treated as a low probability stimulus in a similar manner to deviant stimuli in odd-ball paradigms.
PB ELSEVIER IRELAND LTD
SN 0304-3940
YR 2008
FD 2008-01-10
LK http://hdl.handle.net/10498/30693
UL http://hdl.handle.net/10498/30693
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026