Interference between normal vibrato and artificial stimulation of laryngeal muscles at near-vibrato rates

Ramig, 1987, Comparative measures of vocal tremor and vocal vibrato, J Voice, 1, 162, 10.1016/S0892-1997(87)80040-1 Rack, 1986, The role of reflexes in the resting tremor of Parkinson's disease, Brain, 109, 115, 10.1093/brain/109.1.115 von Holst, 1937, vol 1 Gallistel, 1980 Jackson, 1991, Perspectives of nonlinear dynamics, 203 Sapir, 1981, Effect of geniohyoid, cricothyroid and sternothyroid muscle stimulation on voice fundamental frequency of electrically elicited phonation in rhesus macaque, Laryngoscope, 91, 457, 10.1288/00005537-198103000-00017 Kempster, 1988, Effects of electrical stimulation of cricothyroid and thyroarytenoid muscles on voice fundamental frequency, J Voice, 2, 221, 10.1016/S0892-1997(88)80080-8 Alipour, 1987, Twitch response in the canine vocalis muscle, J Speech Hear Res, 30, 290, 10.1044/jshr.3003.290 Perlman, 1988, Comparative study of the physiological properties of the vocalis and cricothyroid muscles, Acta Otolaryngol(Stockh), 105, 372, 10.3109/00016488809097021 Titze, 1989, The role of the thyroarytenoid muscle in regulation of fundamental frequency, J Voice, 3, 213, 10.1016/S0892-1997(89)80003-7 Koda, 1992, An evaluation of laryngeal muscle activation in patients with voice tremor, Otolaryngol Head Neck Surg, 107, 684, 10.1177/019459989210700510 Hakes, 1987, Acoustic characteristics of vocal oscillations: vibrato, exaggerated vibrato, trill, and trillo, J Voice, 1, 326, 10.1016/S0892-1997(88)80006-7 Hsiao, 1994, Modulation of fundamental frequency by laryngeal muscles during vibrato, J Voice, 8, 224, 10.1016/S0892-1997(05)80293-0 Titze, 1988, Preliminaries to the body-cover theory of pitch control, J Voice, 1, 314, 10.1016/S0892-1997(88)80004-3