<unk>  (fEMG) refers to an<unk>  (EMG) technique that measures muscle activity by detecting and amplifying the tiny electrical impulses that are generated by muscle fibers when they contract. It primarily focuses on two major muscle groups in the face, the corrugator supercilii group which is associated with frowning and the zygomaticus major muscle group which is associated with smiling.
Facial electromyography
Photoacoustic imaging
Audiometry
Occipital nerve stimulation
Tympanometry
Pure-tone audiometry
Vibroacoustic stimulation
Otoacoustic emission