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. Author manuscript; available in PMC: 2021 Mar 24.
Published in final edited form as: J Neurosurg. 2019 Sep 24;133(4):992–1001. doi: 10.3171/2019.4.JNS19347

TABLE 2.

Study cohort demographics and stimulation parameters

Case No. Age
(Years)
Sex Tinnitus
Duration
(Years)
Prior
Treatment
Tinnitus Description
by Ear
Lead
Contacts
Pulse
Width (μs)
Amplitude
(Volts)
Frequency
(Hertz)

U01–02 38 F 2 Hearing aid to Left ear with Maskers L Hiss with Beeps [0–1-2+] 150 Off 150

R None [8–9-10+] 150 6.0 150
U01–03 58 M 2 Hearing Aids with Maskers L High Pitched Tone [C+2–3-] 60 6.5 50

R High Pitched Tone [C+10–11-] 60 6.0 50
U01–04 58 M 40 Notched Noise Maskers and TRT L High Pitched Tone [0–1-2–3+] 60 or 180 3.0 – 5.0 150 or 250

R High Pitched Tone [8–9-10–11+] 60 or 180 3.0 – 5.0 150 or 250
U01–10 37 F 25 Hearing Aids with Maskers L Lawn Mower; Table Saw [C+1–2-] 90 8.0 20

R Lawn Mower; Table Saw [C+8–9-] 90 8.0 20
U01–12 62 M 5 Hearing Aids and Support Group L Medium Pitched Tone [2+3-] 90 6.0 10

R Medium Pitched Tone [10+11-] 90 6.0 10

Stimulation parameters for 24 weeks of continuous caudate stimulation to endpoint. F – Female. M – Male. TRT – Tinnitus retraining therapy. C – Case of pulse generator. L – Left. R – Right. μs – microsecond.