Experience Sampling in Resting State

The Experience Sampling in Resting State dataset contains data structural and
functional MRI data from participants who underwent an experience sampling
protocol during a resting state fMRI scan.

The description of the full acquisition protocol can be found in:

Van Calster, Laurens, et al., Fluctuations of attentional networks and default
mode network during the resting state reflect variations in cognitive states:
evidence from a novel resting-state experience sampling method.
Journal of Cognitive Neuroscience 29.1 (2017): 95-113.

In short, while participants were at rest in an MRI scanner, they received
random probes every 30 to 60 seconds to report their experiences.
The resting-state scan lasted between 48 and 58 minutes, depending on
participants' responses and reaction times. When probed, an exclamation mark
appeared for 1000 milliseconds, prompting participants to reflect on their
recent cognitive events. They categorized their experiences into four types:

* Absence (mind blanking or empty state)
* Perception (acknowledgment of a stimulus without internal thought)
* Stimulus-dependent thought (awareness of the immediate environment)
* Stimulus-independent thought (no awareness of the immediate environment).