Neural correlates of adaptive cognitive control in working memory.

Area of Science:

• Cognitive Neuroscience
• Psychology

Background:

• Conflicts arise in working memory (WM) during retrieval when cues activate competing information, hindering performance.
• Recent findings suggest WM conflict adaptation mirrors patterns observed in selective attention, aligning with conflict monitoring theory.

Purpose of the Study:

• To investigate if neural markers for conflict and adaptive control in WM are analogous to those identified in selective attention tasks.
• Utilizing event-related potentials (ERPs) to examine neural responses during WM retrieval conflicts.

Main Methods:

• Participants encoded and retrieved digits from two colored lists, responding to probe items.
• Conflict was induced by incongruent digits at corresponding positions in memory lists.
• Behavioral responses and event-related potentials (ERPs) were recorded.

Main Results:

• Behavioral data showed a congruency sequence effect: slower responses to incongruent probes, reduced after incongruent trials.
• ERPs revealed congruency effects on N450 amplitude, which diminished after incongruent trials.
• Posterior P3 amplitude modulated by trial-to-trial congruency, mirroring findings from tasks like the Stroop task.

Conclusions:

• Neural mechanisms for conflict detection and adaptive control in working memory share similarities with those in selective attention.
• Event-related potential findings support the integration of conflict monitoring and control processes across different cognitive domains.