THE LEAD ARTICLE in The Journal of Laryngology & Otology (Jan. 13, 2010) concludes that "A favorable response to sequential phase-shift sound wave treatment of predominant tone tinnitus was seen in 489 patients in six separate ENT centres worldwide...This result verifies this technique as a viable and successful method of tinnitus treatment, which is reproducible in a range of centres."
The article, titled "Worldwide experience with sequential phase-shift sound cancellation treatment of predominant tone tinnitus," was authored by Drs. Daniel S.J. Choy of the Tinnitus Control Center, New York; R.A. Lipman of the ENT Center, Erie, PA; and G.P. Tassi of Casa di Cura, Villa Anna S. Benedetto del Tronto, Grottamare, Italy.
Click here for the complete article in pdf format.
a research paper presented at the 90th Annual Cinical Assembly
of the American Osteopathic College of Ophthalmology and Otolaryngology
- Head and Neck Surgery, Orlando, FL, May 3-7, 2006.
Phase Shift Treatment for Predominant Tone Tinnitus
Ruthann I. Lipman, DO1; Sidney P. Lipman, MD1;
Kirk W. Steehler, DO1
1 Lake Erie College of Osteopathic Medicine,
The purpose of this study was to “independently
evaluate the effectiveness of phase shift treatment for predominant
The paper stated, “Our research demonstrates
a significant decrease in tinnitus intensity after short-term
treatment with 46% of our patients demonstrating complete residual
inhibition for 1-7 days.”
The report continued, “These outcomes suggest that this
device [the Tinnitus Phase-Out™ Portable Treatment Device]
may be a valuable tool.”
Furthermore, the report stated, “In this
era of managed care medicine, solutions for tinnitus are not
uniformly covered in a comprehensive manner leaving much of the
burden of cost to the patient. Therefore, a treatment that is
largely self-directed, portable, and available for home use becomes
very desirable from a medical economic standpoint. After physician
determination of patient response during a designated time period,
chosen responders would likely benefit from continued home use
of this device.”
Click here for the complete abstract “poster” in
ABSTRACT of a research paper presented at the European Federation
of Audiology Societies, Gothenburg, Sweden, June 20-22, 2005.
An Effective Solution for the Treatment of Tinnitus Using
Phase Shift Technology
Dr. E. Noik, Tinnitus Care Centre, London, UK
This study of 81 tinnitus sufferers showed that
over 70% of patients benefited from treatment with the Tinnitus
protocol. These results confirm an earlier study done in New York
in which 83% of participants demonstrated a positive response
to this treatment.
The study concluded that in view of the results obtained,
phase-shift treatment for tinnitus offers the prospect of significant
symptomatic improvement for the majority of patients.
Click here for the complete abstract “poster” in
of a research paper
presented at the VIIIth International Tinnitus Seminar,
Pau, France, September 2005
A novel treatment of predominant
tone tinnitus with sequential sound cancellation
Daniel S. J. Choy, M.D., F.A.C.P.1,
Ivan Kaminow, PhD2
1Columbia University & Tinnitus Control Center,
2Senior Scientist, Bell Laboratories, Retired
We report on a novel treatment of predominant tone
tinnitus using phase-shift sound cancellation in 112 patients. Using
earphones, the patients’ tinnitus is self-assessed in frequency
(Hz) and amplitude (dB) five times to ensure accuracy. A pure sine
wave based on this data is fed into the earphones at six degrees
out of phase sequentially (6, 12, 18, 24, 30, etc.) for 30 seconds
each for 30 minutes, or until 360 degrees have been achieved. Mathematical
calculations show that with this “shotgun” method, sound
cancellation occurs 1/3 of the time irrespective of when the patient’s
tinnitus wave begins. That is, the cancellation is independent of
the phase of the patient’s tinnitus wave.
The study was carried out in Parts 1 and 2.
Part 1. Design of study.
35 patients with predominant tone tinnitus of greater than 6 months
duration unresponsive to all previous treatments were enrolled and
rotated through a 3-arm study: A, B, and C.
Group A, was the control, sham group. Treatment consisted of an arbitrary sound wave at 1000 Hz and 77dB x 10 minutes, without phase-shift, weekly x 3.
Group B (also control sham), 180-degree phase-shift: received their own self-assessed sound wave phase-shifted 180 degrees x 10 minutes weekly x 3.
Group C received the 6-degree sequential “shotgun”
phase-shifted wave based on their self-assessed frequency and amplitude
x30 minutes weekly x3. The reason for this group being treated for
30 minutes is explained under “Methods.”
Immediately before and after the treatments, each
patient self-assessed his frequency and amplitude through matching.
All patients were rotated through the three arms, so that data were
obtained on 102, and not 105 subjects, because of 3 drop-outs.
A 6 dB reduction in amplitude was considered a positive
response. Groups A, B, and C had responses of 24%, 27%, and 82%
respectively. The difference between A and C was a p<0.001.
Part 2. 54 patients were
treated solely with the 6 degree sequential “shotgun”
method for 30 minutes weekly x3. 49 patients had a reduction in
their tinnitus amplitude greater than 6 dB for a success rate of
Subsequently a group of 23 patients were treated as
above, but on a tiw (Monday-Wednesday-Friday) schedule for one week.
21 of 23 responded, also for a rate of 91%.
All responding patients were provided with a compact
disc customized to their specific treatment frequencies. The current
instructions are for them to self treat with the CD at home using
a high fidelity CD player and earphones tiw x 1 month; then, if
the tinnitus improves, to progress to a q4, q5, q6, q7 day schedule
x 1 month for each change, and to increase the frequency of treatment
only if the tinnitus begins to worsen. Note: The CD has been superseded by the Patient Treatment Device described elsewhere in this website.
Conclusions. In the 3-arm
study with 35 patients rotated through each arm, reduction of
predominant tone tinnitus was seen in 24%, 27%, and 82% of the
control arm, a 180-degree phase-shift arm, and a 6-degree sequential
phase-shift arm, respectively. The difference between the control
and 6-degree arms was a p<0.001.
A subsequent group of 54 patients treated with the
6-degree sequential “shotgun” phase-shift method weekly
x3 showed responses in 49, or 91%.
A last group of 23 patients similarly treated, but
only for one week on a tiw schedule, showed responses in 21, or
We believe a 6-degree sequential phase-shift “shotgun”
method based on the patient’s self-assessed frequency and
amplitude shows promise in the treatment of single tone tinnitus.
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