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Table 1 Acoustic variables of J.C's voice at baseline and during the course of treatment.

From: Laryngeal dysfunction in Amyotrophic Lateral Sclerosis: a review and case report

Month Fo Jitter Shimmer N/H vFo vAm
July 123 Hz 4.06 4.14% 0.48 22.32% 28.00%
Sep. 132 Hz 6.06% 21.32% .707 31.08% 42.99%
Oct. 141 Hz 4.47% 19.53% .457 24.52% 41.60%
Nov. 147 Hz 4.28% 16.39% .466 11.43% 33.33%
Dec. 161 Hz 6.50% 17.36% .747 13.47% 40.25%