Assessing pain levels in real-world conditions, such as during active surgery, can be challenging. Self-reports, often considered globally as "ground truth" can be unreliable, episodic and ill-suited to routine monitoring or use with non-verbal patients. Lately, physiological measurements have been explored as an objective method for assessing the symptoms of pain increase on the body. We investigated the effects of pain (high pain) using a facial mask - emteqPRO, equipped with seven facial electromyographic (fEMG) sensors. Our aims were to: (i) investigate the efficacy of continuous physiological monitoring within surgery at a hospital environment, and (ii) to produce initial findings and show how pain increases affects the data from fEMG sensors.

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