Fluctuating Minds: Spontaneous Psychophysical Variability during Mind-Wandering. Henríquez, R. A., Chica, A. B., Billeke, P., & Bartolomeo, P. PloS One, 11(2):e0147174, 2016.
doi  abstract   bibtex   
Mind-wandering is the occasional distraction we experience while performing a cognitive task. It arises without any external precedent, varies over time, and interferes with the processing of sensory information. Here, we asked whether the transition from the on-task state to mind-wandering is a gradual process or an abrupt event. We developed a new experimental approach, based on the continuous, online assessment of individual psychophysical performance. Probe questions were asked whenever response times (RTs) exceeded 2 standard deviations from the participant's average RT. Results showed that mind-wandering reports were generally preceded by slower RTs, as compared to trials preceding on-task reports. Mind-wandering episodes could be reliably predicted from the response time difference between the last and the second-to-last trials. Thus, mind-wandering reports follow an abrupt increase in behavioral variability, lasting between 2.5 and 10 seconds.
@article{henriquezFluctuatingMindsSpontaneous2016,
	title = {Fluctuating {Minds}: {Spontaneous} {Psychophysical} {Variability} during {Mind}-{Wandering}},
	volume = {11},
	issn = {1932-6203},
	shorttitle = {Fluctuating {Minds}},
	doi = {10.1371/journal.pone.0147174},
	abstract = {Mind-wandering is the occasional distraction we experience while performing a cognitive task. It arises without any external precedent, varies over time, and interferes with the processing of sensory information. Here, we asked whether the transition from the on-task state to mind-wandering is a gradual process or an abrupt event. We developed a new experimental approach, based on the continuous, online assessment of individual psychophysical performance. Probe questions were asked whenever response times (RTs) exceeded 2 standard deviations from the participant's average RT. Results showed that mind-wandering reports were generally preceded by slower RTs, as compared to trials preceding on-task reports. Mind-wandering episodes could be reliably predicted from the response time difference between the last and the second-to-last trials. Thus, mind-wandering reports follow an abrupt increase in behavioral variability, lasting between 2.5 and 10 seconds.},
	language = {eng},
	number = {2},
	journal = {PloS One},
	author = {Henríquez, Rodrigo A. and Chica, Ana B. and Billeke, Pablo and Bartolomeo, Paolo},
	year = {2016},
	keywords = {/unread, Adolescent, Adult, Attention, Humans, Male, Psychomotor Performance, Reaction Time, Thinking, Young Adult},
	pages = {e0147174},
}

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