What is the current research/industry standard on measuring mental workload using objective measurements (e.g. EEG, eye-tracking)?

Do you have any suggestions for specific tools and techniques? Are there combinations of physiological measurements one should consider?


There are different parameters you can use, but as the question is not clear what exactly you want to do , I think with EEG and Task Load Index (TLI) you are good to go.

The Task load index (TLI) is the so called engagement-index and is defined by two formulas, TLI1 and TLI2. However, these indices were calculated as follows:
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where Pθ and Pα denote the theta- and alpha-band power, respectively. Pθ,Fz and Pθ,AFz are the theta activities of Fz and AFz electrodes respectively. The θ (theta) activity was calculated by averaging the power spectrum of the θ frequency range (4-7.5 Hz). Similarly, Pα,Pz and Pα,CPzPOz are the α (alpha) activities of Pz and the pool of CPz and POz electrodes, respectively. The α activity was calculated by averaging the power spectrum of the α frequency range (8- 12.5)

This section is exactly quoted from this paper.

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  • $\begingroup$ Sounds like reasonable advice, but there are some caveats, namely that higher TLI seems associated with higher performance: ncbi.nlm.nih.gov/pubmed/25277022 $\endgroup$ – SX welcomes ageist gossip Jan 5 '18 at 15:14
  • $\begingroup$ That completely make sense, I have seen paper using LZ as a measure of workload, so it really depends on what r u measuring and what you need it for, the interpretation is really important $\endgroup$ – Majid khalili Jan 5 '18 at 17:24
  • $\begingroup$ Thanks both for your comments. It’s to compare mental workload between performing a task in a specific simulator where you must read instructions yourself vs when you can discuss task instructions with an equally competent peer. I believe you will have lower levels of WL when you don’t have to communicate with a peer, however perhaps the fact that you can share your task responsibilities actually positively impacts your WL. I’m not sure how to factor in task performance yet. $\endgroup$ – Jeyy Jan 6 '18 at 11:01
  • $\begingroup$ Have you designed the task ? the timing is really important for such a task $\endgroup$ – Majid khalili Jan 7 '18 at 12:28
  • $\begingroup$ I'm currently working with the design, but it will be a well-defined maritime navigation scenario. Interesting, could you please elaborate on your comment about timing, what specifically are you referring to? I really appreciate your consideration. $\endgroup$ – Jeyy Jan 8 '18 at 12:01

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