Event-related potential study of P2 and N2 components on fast and slow responses in the auditory condensation task
PSYCHOLOGY. WP BRP. Издательский дом НИУ ВШЭ , 2016. No. WP BRP 70/PSY/2016.
Chernyshev B. V., Medvedev V.
In tasks involving response choice based on certain stimulus-to-response mappings, at least two stages of information processing may be involved: (1) formation of sensory stimulus object representations leading to stimulus identification, and (2) application of stimulus-to-response mappings (i.e. “task rules”) to these representations leading to response selection. Most of the research done in this area involved simple reflex-like stimulus-to-response mappings, thus addressing mostly the perceptual aspect of decision making. Here we used the condensation task, which involves more complex stimulus-to-response mappings. Within each subject, we divided participants’ responses into four conditions depending upon performance speed and accuracy: fast correct, fast erroneous, slow correct and slow erroneous responses. We compared event-related potentials between these conditions. We found that P2 amplitude was related to performance accuracy, the effect being evident for fast but not for slow responses. N2 amplitude was increased for slow responses – both correct and erroneous. We suggest that fast errors result mostly from erroneous sensory representations that immediately become translated into actions in conditions of low motor threshold. On the contrary, slow responses happen in conditions of low executive attention, through reevaluation of sensory representations and invocation of cognitive control process via the mechanisms of response conflict detection.
Research target: Psychology
Priority areas: humanitarian
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Current understanding of feature binding remains controversial. Studies involving mismatch negativity (MMN) measurement show a low level of binding, whereas behavioral experiments suggest a higher level. We examined the possibility that the two levels of feature binding coexist and may be shown within one experiment. The electroencephalogram was recorded while participants were engaged in an ...
Added: August 31, 2016
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Cognitive control includes maintenance of task-specific processes related to attention, and non-specific regulation of motor threshold. Depending upon the nature of the behavioral tasks, these mechanisms may predispose to different kinds of errors, with either increased or decreased response time of erroneous responses relative to correct responses. Specifically, slow responses are related to attentional lapses ...
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, , et al., , in : International Congress "Neuroscience for Medicine and Psychology", Sudak, Crimea, Russia, May 30-June 10, 2017. : [б.и.], 2017. P. 446-446.
Feature binding is believed to be critical for perception, while brain mechanisms of this process are still under debate. Studies measuring mismatch negativity (MMN) demonstrate that binding occurs at a low level of the cortical hierarchy, while behavioral experiments suggest a much higher integrative level. The current study aimed at testing the hypothesis that processing of feature conjunctions ...
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Experiments involving participant’s response recording by way of pressing buttons are quite common. This simple method allows estimation of such crucial parameters as response time and response correctness. However, more detailed analysis of behavioral responses is needed in some cases. Crucial aspects within the cognitive control research field include the conflict before decision-making, error detection after response commission and internal ...
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, , et al., NeuroReport 2018 Vol. 29 No. 4 P. 308-313
Currently there are two opposing views on feature binding in the auditory modality: according to behavioral studies, this process requires focused attention, while electrophysiological studies suggest that feature binding may be fully automatic and independent from attention. Here, we examined whether feature binding depends on higher-level attentional processes, by manipulating the attentional focus. We used ...
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Added: September 25, 2018
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Added: June 4, 2016
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, , Российский журнал когнитивной науки 2018
This article provides a short overview of the various studies devoted to executive functions. Executive functions are “a set of general-purpose control mechanisms, often linked to the prefrontal cortex of the brain, that regulate the dynamics of human cognition and action” (Miyake, Friedman, 2012). Executive functions have gained popularity as a way to decompose into ...
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Cognitive control is a set of processes that are responsible for flexible goal-directed behaviour. We did a series of electroencephalographic experiments during the auditory condensation task. The findings obtained allow distinguishing three brain networks that carry out adaptive processes after error commission. We also show that increased response time is associated with lower level of ...
Added: October 27, 2017