Table 1.

Related work analysis.

Reference	Small Time Windows	Real Time	Web Browsing Tasks	Multiple Psychophysiological Sensors
[15]	Partially. Time window of 23.7 s.	Yes	No. Desktop-based tasks.	Yes. Eye tracker, EEG, ECG, heat flux and HR.
[14]	Partially. Time windows between 5 s and 60 s.	Yes	No. Coding tasks.	Yes. Eye tracker and EEG.
[34,37]	Partially. Time windows of 30 s.	Yes	No. Arithmetic tasks	Yes. EDA and blink.
[16]	No. Time windows between 60 s and 70 s.	Yes	No. Arithmetic tasks	Yes. Eye tracker, EDA, pulse-oximeter, mouse pressure sensor.
[17]	No. Time windows of 2 min.	Yes	No. N-back task.	Yes. EEG, EDA, respiration, ECG, eye tracker.
[18]	Yes. Time windows of 550 ms.	Yes	Partially. Choosing a route, correcting spelling and classifying emails tasks.	No. Only pupillary dilation.
[3]	Not applicable.	No	Yes	No. Measurement of mental workload by tapping test.
[36]	No. Time windows between 100 s and 120 s.	Yes	Yes	No. Only eye tracking.
[38]	Yes. Time windows between 300 ms and 600 ms.	Yes	Yes	No. Only pupillary dilation.