A cohort of 12 adults with asymmetric hearing loss (profound in one ear and severe in the other) received an Oticon Neuro ZTI cochlear implant and a Dynamo hearing aid, respectively (bimodal stimulation). Patient age ranged from 16 to 76 years (mean 47.5, SD 24.6). They were tested before implantation (time T0), at month 3, 6 and 12 after CI activation (time 3M, 6M, 12M respectively), by means of: pure-tone audiogram (PTA) in sound booth and in free-field (FF); speech perception (bisillabic words recognition) in free-field (FF) in quiet and with cocktail party; the 48 items SSQ questionnaire (Gatehouse 2004); ASSE test (Govaertz 2006). The performances for all tests were checked in the 3 conditions: bimodal (CI + HA); CI only; HA only. As expected, the speech recognition scores were slightly better in the CI+HA condition than in CI or HA alone, both in quiet and (surprisingly) in noise, although not reaching statistical significance. The SSQ for the bimodal stimulation showed a constant improvement over 12 months, especially for the "quality of sound" sub-scale. The ASSE test returned the most interesting results: the combined (CI+HA) stimulation provided a statistically significant advantage to CI recipients on all the 7 tasks, with a constant improvement over time. The just noticeable difference (JND) was particularly improved in the CI+HA vs the only CI use. This is an evidence of the prosodic enhanchement due to the suprasegmental cues delivered by the HA.
Bimodal speech perception and prosody recognition in ci recipients with asymmetric hearing loss
Tognola Gabriella;
2018
Abstract
A cohort of 12 adults with asymmetric hearing loss (profound in one ear and severe in the other) received an Oticon Neuro ZTI cochlear implant and a Dynamo hearing aid, respectively (bimodal stimulation). Patient age ranged from 16 to 76 years (mean 47.5, SD 24.6). They were tested before implantation (time T0), at month 3, 6 and 12 after CI activation (time 3M, 6M, 12M respectively), by means of: pure-tone audiogram (PTA) in sound booth and in free-field (FF); speech perception (bisillabic words recognition) in free-field (FF) in quiet and with cocktail party; the 48 items SSQ questionnaire (Gatehouse 2004); ASSE test (Govaertz 2006). The performances for all tests were checked in the 3 conditions: bimodal (CI + HA); CI only; HA only. As expected, the speech recognition scores were slightly better in the CI+HA condition than in CI or HA alone, both in quiet and (surprisingly) in noise, although not reaching statistical significance. The SSQ for the bimodal stimulation showed a constant improvement over 12 months, especially for the "quality of sound" sub-scale. The ASSE test returned the most interesting results: the combined (CI+HA) stimulation provided a statistically significant advantage to CI recipients on all the 7 tasks, with a constant improvement over time. The just noticeable difference (JND) was particularly improved in the CI+HA vs the only CI use. This is an evidence of the prosodic enhanchement due to the suprasegmental cues delivered by the HA.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
