Market research experiments involving tasting food.
If the participant is expected to eat food as part of your test, EEG is usually not recommended. This is because the act of chewing and swallowing causes significant EMG-based noise in EEG channels, and this renders the data unusable for at least part of the test.
This is less significant is the participant is trying liquids or tasting a small quantity of something that does not have to be chewed.
As an alternative, consider galvanic skin response and heart rate, via our Ring system. GSR and BVP have been used to record emotional response, and these are not effected by noise from chewing or eating.
The Ring system can be used with SennsLab experiments and will give details on emotional response in SennsMetrics.