Advanced Bionics Naida CI Q90 Instructions For Use Manual page 36

beamforming features. At the time of acute testing,
subjects were counseled with respect to the intended
use of each feature (WindBlock, SoundRelax, EchoBlock,
auto UltraZoom, and StereoZoom for bilateral subjects),
evaluated, and then asked via a questionnaire whether
each sound processing feature was acceptable (yes/no)
and to rate the favorable aspects of each feature using
a numeric scale from 1-7 (1=Strongly Disagree, 4=Neu-
tral, and 7=Strongly Agree). Subjects used each feature
in a simulated sound environment before completing
the questionnaire.
During the chronic phase of the study, the same
questionnaire format was used to evaluate subjective
experience with auto UltraZoom alone and with a
combined feature program (WindBlock + SoundRelax
+ auto UltraZoom). Responses were based upon
subjects' use of the programs in their everyday listening
environments. In the chronic phase, subjects were asked
to assess both auto UltraZoom and the combined features
after both two-week periods to maintain blinding of which
programs were being activated during each period.
Acute questionnaires indicated that all individual
features were acceptable by all subjects (18/18, 100%).
Chronic questionnaires indicated that auto UltraZoom
was acceptable by a majority of subjects (13/18, 72.2%)
and that the combined features (WindBlock + SoundRe-
lax + auto UltraZoom) were acceptable by two thirds of
the subjects (12/18, 66.7%).
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