RT Journal Article
T1 Similarities and differences between interference from stimulus position and from direction of the arrow: Behavioral and event-related potential measures
A1 Cespón, Jesús
A1 Galdo Álvarez, Santiago
A1 Díaz Fernández, Fernando
K1 Simon effect
K1 Lateralized readiness potential (LRP)
K1 P3b
K1 Stimulus–response compatibility tasks
AB Studies with stimulus–response compatibility (SRC) tasks used the stimulus position (SRC-p) and/or the direction indicated by a central arrow (SRC-d) as irrelevant dimensions. Despite behavioral differences revealed by the distributional analysis (DA), both interferences were established at similar loci on the basis of modulations in the lateralized readiness potential (LRP) and P3b components. Consequently, similar underlying mechanisms were proposed for both interferences. However, comparison of motor processes associated with each task is problematical because each involves different components. In addition, previous studies have frequently used different proportions of trials between conditions, which complicate interpretation of the results because the stimulus probability may modulate P3b. Taking these problems into account, the present study investigated the effects of interference in SRC-p and SRC-d tasks, in which the participants responded to the color of a stimulus while ignoring the position and the direction indicated by a central arrow, respectively. The interference was greater in the SRC-p than in the SRC-d task. The DA showed that stimulus position affected the performance more quickly than the direction of the arrow. The P3b latency was longer and the P3b amplitude was smaller when stimulus position was incompatible. However, no differences in P3b were found in the SRC-d task. Moreover, both types of interference affected response-related processes (LRP-r) similarly. Therefore, the stimulus position and the direction indicated by the stimulus may share a common locus of interference (response execution), but only stimulus position affects P3b component, which constitutes a link between stimulus evaluation and the response selection
PB Elsevier
YR 2013
FD 2013-11
LK https://hdl.handle.net/10347/46103
UL https://hdl.handle.net/10347/46103
LA eng
NO Cespón, J., Galdo-Álvarez, S., & Díaz, F. (2013). Similarities and differences between interference from stimulus position and from direction of an arrow: behavioral and event-related potential measures. International journal of psychophysiology : official journal of the International Organization of Psychophysiology, 90(2), 180–189. https://doi.org/10.1016/j.ijpsycho.2013.07.002
NO This work was financially supported by funds from the Spanish Government: Ministerios de Educación (Beca FPU AP2007-04362) and Ecomonía y Competitividad (PSI2010-22224-C03-03) and from the Galician Government: Consellería de Industria e Innovación/Economía e Industria (PGIDIT07PXIB211018PR, 10PXIB 211070PR) and Consellería de Cultura, Educación e Ordenación Universitaria (Axudas para a Consolidación e Estruturación de unidades de investigación competitivas do sistema universitario de Galicia 2012. Grupos con potencial de crecemento. CN 2012/033)
DS Minerva
RD 23 abr 2026