PRES: Neural Signature of Mind Wandering Flashcards
Define mind wandering.
A cognitive state where attention shifts from external tasks to internal, self-generated thoughts.
Which brain network is most associated with mind wandering?
The Default Mode Network (DMN).
What is task-unrelated thought (TUT)?
Internally-oriented cognition not related to external tasks.
What anticorrelated network opposes the DMN during tasks?
The task-positive network or anticorrelated network (ACN).
Which EEG frequency band increases during mind wandering?
Alpha-band.
What happens to event-related potentials (ERPs) during mind wandering?
Late ERP amplitudes are reduced.
How does pupil size correlate with TUT episodes?
Larger baseline pupil size is observed.
Which machine learning technique was used to predict mind wandering?
Support Vector Machines (SVM).
What role does the posterior cingulate cortex (PCC) play in mind wandering?
It is a central node in the DMN associated with internally-focused thought.
What is the Sustained Attention to Response Task (SART)?
A task used to measure attention by requiring responses to non-target stimuli and withholding responses to targets.
How were thought probes designed in the study?
To prompt participants about their attentional focus during the task.
What does increased functional connectivity between the DMN and ACN signify?
A dynamic interaction during transitions between attention and mind wandering.
What impact does mind wandering have on task performance?
It is detrimental, leading to performance errors.
What role does the locus coeruleus/norepinephrinergic (LC/NE) system play in attention?
It modulates attentional states through tonic and phasic norepinephrine levels.
What multimodal approaches were combined in the study?
Simultaneous fMRI, EEG, and pupillometry.
