Interaction between selective attention and response selection during action-based decision making
(2012) Annual meeting of the SfN — Location: New Orleans (13.October.2012)
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- Abstract
- Decision making relies on the efficiency of two major interrelated components. “Selective attention” and “response selection” processes bias competitive processing at a sensory and a motor level, respectively. Here, we used electroencephalography to characterize how these components are interdependent. Participants performed a version of the Flanker task in which they were asked to indicate by a left or right button-press the orientation of a briefly presented left- or right-facing central arrow, flanked by a set of two distractor arrows on each side which either pointed in the same (congruent trials) or in opposite conflicting- directions (incongruent trials). The proportion of congruent and incongruent trials was manipulated to produce two different conditions. In one of them, most trials were incongruent (80%) and thus subjects expected to face conflict (high conflict blocks, HCBs); in the “low conflict blocks” (LCBs), most trials were congruent (80%). Selective attention and response selection processes were assessed in the two block types by recording steady-state visual evoked potentials (SSVEPs) and lateralized readiness potentials (LRPs), respectively. As expected, RT and %error were larger in incongruent compared to congruent trials. However, this difference was attenuated in the HCBs compared to the LCBs, probably because in HCBs, control mechanisms were recruited to help sharpen selective attention and response selection. SSVEP indicate a more selective processing of the central arrow (compared to distractors) in the HCBs than the LCBs. This effect was associated with larger and earlier LRPs in incongruent trials of the HCBs than LCBs.
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Klein, P.-A., Zenon, A., Nozaradan, S., Mouraux, A., & Duque, J. (2012). Interaction between selective attention and response selection during action-based decision making. Annual meeting of the SfN, New Orleans. https://hdl.handle.net/2078.5/51579