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3
Fig. 5.
Radial distances of center of electrode contacts to the modiolus, shown per electrode contact (A) and per depth range (B).
Significant differences between the P- and NP- groups are marked (*
p
< 0.05; **
p
< 0.01). Dashed lines reflect the combined contribution
to the measured distances of the space between the center and the surface of the contacts, the silicon blebs, located medially on the array
between adjacent electrodes, and the average standard error. C, Phoneme scores after 1 yr of follow-up of the positioner group (P) and the
nonpositioner-group (NP) plotted against the insertion depth of the most apical electrode contact. The lack of correlation is shown by
trend lines,
R
2
and
p
values. The number of patients in the subgroups is shown for electrode contacts and for the depth ranges in Table 3.
position of the NPd-
a location more com
However, the most
was located signific
P-group (
p
0.01). A
tion depth did not
with speech percepti
To compare the r
at the same cochlear
were converted to
distances of the elec
for 10 depth ranges
with the findings p
distances of the elec
depth ranges differ
group and the NP-g
60 to 120:
p
0.01;
the distances at th
significantly (
p
ranges in the cochl
electrode contacts of
similar.
T-Levels, M-Levels
Contrary to the
that the contacts in
nerve fibers in the
the P-group tend t
NP-group, although
cant (
p
0.3) (Fig.
T-levels, especially
prevent small differ
significant levels. A
levels vary greatly,
along the array sho
group. The T-levels o
differences along t
thresholds basally.
are much more prof
sharp increase of the
array (as seen in F
T-level (T-level at co
at contacts 14 and 1
icantly larger than
The differences in b
and P are also sign
plotted per depth
significance level (
p
group, this basal w
percentage of the a
Fig. 5. Radial distances of center of electrode contacts to the
modiolus, shown per electrode contact (A) and per depth
range (B). Significant differences between the P- and NP-
groups are marked (*
p
<
0.05; **
p
<
0.01). Dashed lines
reflect the combined contribution to the measured distances
of the space between t e center and the surf ce of the
contacts, the silicon blebs, located m dially n the a ray
between adjacent electrodes, and the average standard error.
C, Phoneme scores after 1 yr of follow-up of the positioner
group (P) and the nonpositioner-group (NP) plotted against
the insertion depth of the most apical electrode contact. The
lack of correlation is shown by trend lines,
R
2
and
p
values.
The number of patients in the subgroups is shown for
electrode contacts and for the depth ranges in Table 3.
586