"Psychologists Francesco Foroni from VU University Amsterdam and Gün R. Semin from the University of Utrecht conducted two experiments to see if emotion and feeling language has an influence on facial muscle activity. In the first experiment, a group of students read a series of emotion verbs (e.g., "to smile," "to cry") and adjectives (e.g., "funny," "frustrating") on a monitor, while the activity of their zygomatic major (the muscle responsible for smiles) and corrugator supercilii (which causes frowns) muscles were measured.
The results showed that reading action verbs activated the corresponding muscles. For example, "to laugh" resulted in activation of the zygomatic major muscle, but did not cause any response in the muscles responsible for frowning. Interestingly, when presented with the emotion adjectives like "funny" or "frustrating" the volunteers demonstrated much lower muscle activation compared to their reactions to emotion verbs. The researchers note that muscle activity is "induced in the reader when reading verbs representing facial expressions of emotion."
