Apparatus


EEG electroencephalography

EEG registers variations in brain waves produced by cortex. It reflects consumers’ emotional engagement.

EEG has excellent temporal resolution (1/1000 of a second). This enables to track down each single frame of an ad.



GSR galvanic skin response

GSR registers variations in galvanic skin response. They are considered to reflect whether consumer got energized by the ad.



EMG electromyography

Facial expression indicates whether ad is entertaining. EMG has been considered a powerful instrument to test voluntary (zygomaticus) and involuntary (orbicularis) facial muscle movements which respectively reflect social and genuine smile.