Fig. 4.

Minimum audible angle threshold group means (±SD) are plotted for the group of nine children with bilateral implants whose individual data are shown in Figure 3. On the vertical axis, MAA thresholds can range from 5 to 85°, and data points >85 denote conditions in which thresholds were not measurable (NM). Performance is compared for measures obtained under the three listening modes: bilateral, first cochlear implant, and second cochlear implant. Within each panel, the subject population is divided into two subgroups, depending on the duration of experience with the second cochlear implant (<13 mos or >13 mos). One of the subjects in the <13 mo group, who was tested in the bilateral and first cochlear implant mode, was not tested in the second cochlear implant mode.