1,721,021 research outputs found
Main peak interleaved sampling (MPIS) strategy: effect of stimulation rate variations on speech perception in adult cochlear implant recipients using the Digisonic SP cochlear implant.
No full textActa Otolaryngol. 2010;130(1):102-7.
Main peak interleaved sampling (MPIS) strategy: effect of stimulation rate variations on speech perception in adult cochlear implant recipients using the Digisonic SP cochlear implant.
Di Lella F, Bacciu A, Pasanisi E, Vincenti V, Guida M, Bacciu S.
SourceDepartment of Otolaryngology - Head and Neck Surgery, Section of Middle Ear Microsurgery and Otoneurosurgery, University of Parma, Parma, Italy. [email protected]
Abstract
CONCLUSION: Data obtained from a cohort of 10 post-lingually deaf adult patients indicated that use of a higher stimulation rate, in the setting of the main peak interleaved sampling (MPIS) strategy coupled with the Neurelec-MXM Digisonic SP cochlear implant system, gives a significant advantage in terms of speech perception if compared with a lower rate, especially in a noisy environment.
OBJECTIVES: To evaluate speech recognition performances in post-lingually deaf adult cochlear implant recipients using two different stimulation rates (260 pps/e and 600 pps/e) in the setting of the MPIS strategy combined with the MXM-Neurelec Digisonic SP cochlear implant system.
PATIENTS AND METHODS: Ten post-lingually deaf adults who consecutively received a Neurelec-MXM Digisonic SP device at the CI Center of the University of Parma participated in the study. The study was conducted prospectively as a within-subject repeated measures (ABA protocol) between January 2007 and January 2008. Each subject was exposed to and sequentially tested with two different rates of stimulation (260 pps/e and 600 pps/e), in quiet and in a noisy environment. Statistical analysis was performed on the data obtained.
RESULTS: Subjects using the MPIS strategy with a stimulation rate of 600 pps/e performed significantly better in words and phrases recognition tests in both a noisy and a quiet environment
Hearing rehabilitation in neurofibromatosis type 2 patients: cochlear versus auditory brainstem implantation
No full textAudiol Neurootol. 2008;13(4):273-80. Epub 2008 Feb 7.
Hearing rehabilitation in neurofibromatosis type 2 patients: cochlear versus auditory brainstem implantation.
Vincenti V, Pasanisi E, Guida M, Di Trapani G, Sanna M.
SourceDepartment of Otorhinolaryngology, University of Parma, Parma, Italy. [email protected]
Abstract
OBJECTIVE: We aimed to evaluate and compare the auditory performance of neurofibromatosis type 2 (NF2) patients with bilateral total deafness fitted with cochlear or auditory brainstem implants.
PATIENTS AND METHODS: A retrospective case review was performed. Nine patients suffering from NF2 who underwent hearing rehabilitation by means of cochlear (4 patients) or auditory brainstem (5 patients) implantation participated in the study. Postoperative auditory performance was assessed using closed- and open-set tests.
RESULTS: In the group of patients fitted with a cochlear implant, 3 subjects achieved open-set speech recognition abilities comparable to those of standard adult postlingual implant patients; the remaining patient scored 0% in all open-set format tests, reporting benefits only in environmental sound detection and lip-reading. Among the 5 patients who underwent auditory brainstem implantation, 1 reached good open-set speech recognition skills, scoring 70% in the common phrases comprehension test, and she was able to communicate on the telephone. Two other patients achieved open-set speech understanding (respectively, 33 and 41% in the common phrases comprehension test), reporting daily use of their device. The remaining 2 patients did not achieve any level of open-set speech perception, obtaining only improved access to environmental sound and lip-reading skills.
CONCLUSIONS: Our study confirmed literature data reporting that cochlear implantation may offer open-set speech communication in NF2 patients. In this small cohort, cochlear implant patients performed better than auditory brainstem implant patients, even if variability in auditory performance was observed with both devices. More studies are needed in order to clarify the role and reliability of electrophysiological tests in predicting the residual functionality of the cochlear nerve after tumor removal
Il lessico e gli strumenti di ricerca
No full textDopo avere presentato alcuni dei principali temi, teorici e fattuali, connessi con la questione dell’immigrazione, in queste pagine delineiamo il quadro concettuale su cui direttamente si fonda l’indagine esposta in questo volume, che rappresenta l’esito del lavoro di ricerca svolto dall’unità di Urbino nell’ambito di un progetto nazionale cofinanziato dal Ministero dell’Istruzione dell’Università e della Ricerca (Prin 2001) dal titolo Diritti e aspettative normative nella società multiculturale. L’unità intendeva indagare il campo del riconoscimento normativo e della concreta attuazione in favore dei minori immigrati nel nostro paese di alcuni diritti previsti dalla Convenzione Internazionale sui Diritti dell'Infanzia approvata dall'Assemblea Generale delle Nazioni Unite il 20 novembre del 1989 e dalla Convenzione europea sull’esercizio dei diritti dei fanciulli, fatta a Strasburgo il 25 gennaio 1996. Dal punto di vista metodologico si sono utilizzate tecniche di carattere quantitativo e qualitativo, conformemente al progetto e ad una consolidata pratica di ricerca del gruppo di Urbino. L’indagine nelle scuole, che costituisce la parte principale del lavoro di ricerca che sarà utilizzato nel presente volume, è stata caratterizzata in primo luogo dall’osservazione partecipante, svolta contemporaneamente da un ricercatore in ciascuna area presso due classi di scuole elementari, una per ciascuna delle aree territoriali prescelte nelle regioni. Sono stati inoltre realizzati 18 focus groups. La traccia della discussione, uguale per tutti i gruppi, è stata strutturata in tre aree tematiche: a) Il bambino e le relazioni familiari, b) La scuola e le relazioni scolastiche, c) La migrazione.
Nella stessa fase si è inoltre portata a compimento l’analisi territoriale di sfondo, in particolare conducendo interviste a testimoni privilegiati, campionati nelle due regioni attraverso il sistema “a valanga”. Sono state quindi rivolte interviste ad insegnanti e a genitori dei bambini stranieri presenti nelle scuole. Al centro dell’attenzione sono state poste le rappresentazioni della scuola da parte dei genitori, unitamente alle loro storie personali di migrazione e al rapporto con il contest
Noonan syndrome: cochlear implantation in the setting of cochlear nerve deficiency
No full textNoonan syndrome (NS) is a congenital disorder characterized by a wide heterogeneity in clinical and genetic features. Hearing loss can frequently occur in NS, although not always mentioned in its diagnostic criteria. We are reporting on a child with an established NS who underwent bilateral cochlear implantation (CI) in the setting of cochlear nerve deficiency
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Benefit of hearing aid use in the elderly: the impact of age, cognition and hearing impairment
No full textThis study describes the benefits of hearing aid (HA) use in a sample of elderly experienced HA users (n = 102. mean age 81.1 years), investigating the role of the age, hearing impairment and cognitive function. The benefit was assessed in aided condition by measuring audiometric outcomes (aided thresholds and speech reception in quiet and in noise) and self-assessed outcomes addressing the disability and the handicap domains of auditory dysfunction. Several cognitive abilities were assessed, including short-term memory, working memory and executive functions. To discover potential latent factors and assess which factors significantly influenced the benefit of HA use, age, hearing impairment, cognitive function, audiometric and self-assessed outcomes were examined with multivariate analysis, followed by correlation and regression analysis. The analysis revealed a significant improvement in aided audiometric outcomes and a decrease in the perceived disability and handicap in the sample population. Multivariate, correlation and regression analyses showed that better aided audiometric outcomes were significantly associated with hearing impairment of lower degree and higher cognitive abilities. Moreover, self-assessed outcomes were significantly associated with audiometric outcomes and hearing impairment: subjects with better audiometric outcomes and lower hearing impairment tend to perceive more benefit in using their HAs. Cognition was only indirectly associated with self-assessed outcomes through its direct correlation with aided audiometric outcomes, meaning that the perceived subjective benefit with HA was not directly associated with better cognitive abilities
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