Table 2 Examples of the contents of the files present for each participant in the two top-level folders ‘Raw’ and ‘Labeled’.

From: Unobtrusive measurement of cognitive load and physiological signals in uncontrolled environments

Filename

Data Type

Information

Example

Lab_Notes.pdf

Timestamp as HH:MM, and in some cases as HH:MM:SS followed by series of characters as free-text

Events affecting the data, like artefacts, interruptions, when a question was asked, or when a Bluetooth connection got interrupted

15:17 brief humming 15:21 Muse briefly disconnected (approximately 8 seconds) 15:23 yawning

Task_Labels.csv

Timestamp as HH:MM:SS when the task started, Task-Name Characters as free-text, Labels as Integers, Intended difficult as Boolean

NASA, Mental Workload, Stress, Difficulty, Responses to affective sliders

11:14:00, 11:40:00, making table latex, Effort, Performance, low, high, …

  1. The Lab_Notes.pdf was created by the experimenters during the recordings. Participants answered the Task_Labels.csv at their convenience around the time of the respective recordings in the uncontrolled environments.
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