Effects of task context on EEG correlates of mind-wandering
DOI: 10.3758/s13415-023-01138-9
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Summary
This study investigates how task context influences mind-wandering and its neural correlates, motivated by the context regulation hypothesis. This theory posits that individuals regulate mind-wandering based on attentional demands, wandering more frequently during less demanding tasks. The researchers aimed to determine if self-reported mind-wandering and associated EEG markers vary between a low-demand Sustained Attention to Response Task (SART) and a high-demand Stroop selective attention task. Additionally, the study explored whether deliberate versus spontaneous mind-wandering relates to task performance and executive functioning. Fifty-nine undergraduate participants completed both tasks in counterbalanced order while EEG was recorded. Experience-sampling probes identified on-task versus mind-wandering episodes, and retrospective reports assessed the proportion of deliberate mind-wandering. EEG data from 37 participants with sufficient valid trials were analyzed for alpha oscillations (8–12 Hz) and event-related potentials (ERPs), specifically the P2 component. Behavioral data included task accuracy and self-report measures of executive function. Results indicated that mind-wandering was significantly more frequent during the SART than the Stroop task and during whichever task was presented second in the session, supporting the context regulation hypothesis. Neural data replicated previous findings, showing increased alpha oscillations during mind-wandering episodes compared to on-task episodes for both tasks. However, ERP analysis revealed that mind-wandering was associated with increased P2 amplitudes during the Stroop task, contradicting predictions from perceptual decoupling theory, which anticipates reduced sensory processing. Regarding individual differences, higher overall mind-wandering correlated with poorer SART performance, but deliberate mind-wandering did not predict better performance or executive function scores as hypothesized. The findings demonstrate that both self-report and neural correlates of mind-wandering are sensitive to task context and order. While alpha oscillations consistently indexed mind-wandering across tasks, the unexpected increase in P2 amplitude during the demanding Stroop task suggests that perceptual processing mechanisms may differ depending on cognitive load. These results highlight the importance of considering task demands when interpreting neural markers of mind-wandering and suggest that the adaptive nature of mind-wandering may be more complex than previously assumed, particularly regarding the distinction between deliberate and spontaneous episodes.
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-08-09 |
| archive | success | canonical_url | — | — | 1 | 2026-08-09 |
| extract | success | cached | — | — | 3 | 2026-08-10 |
| clean | success | clean | — | — | 1 | 2026-08-09 |
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| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-08-09 |
| promote | success | — | — | — | 1 | 2026-08-09 |
| summarize | success | llm | qwen3.6-27b-nvidia | summ-v5 | 2 | 2026-08-10 |
| tag | success | vector_similarity | — | — | 11 | 2026-08-11 |
| verify | success | — | — | — | 2 | 2026-08-10 |
Summary generated by qwen3.6-27b-nvidia on 2026-08-10; verification: verified.
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