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A032 Perception of musical consonance of simultaneously presented tone complexes in cochlear implant users
6
Abstracts, ESPCI 2011 / International Journal of Pediatric Otorhinolaryngology 75 (2011) 1–9
360º insertion depth. Temporal fine structure strategies presenting an explicit temporal code for low-frequency channels should map those channels to apical electrodes to avoid the need for a central remapping of pitch. A028 Unraveling DFNB1 phenotype variability T. Volo1 , C. Morando2 , E. Leonardi2 , S. Ghiselli1 , E. Emanuelli1 , A. Murgia2 , G. Babighian1 , E. Orzan1 . 1 Pediatric Audiology Unit, Otorhinolaryngology and Otosurgery Department, University Hospital of Padova, Padova, Italy; 2 Pediatric Department, University of Padova, Padova, Italy Aim: The aim of the study was to retrospectively evaluate the phenotype and the genotype in a large sample of subjects segregating one or two GJB2/GJB6 mutations. Material and Methods: Hearing loss onset, severity, progression, symmetry and morphology were accurately analysed in 98 subjects with DFNB1 associated deafness. Subjects were followed by the same Audiology Unit since hearing loss diagnosis. Results: As previously reported, the degree of hearing loss associated with biallelic truncating mutations was significantly more severe than the hearing loss associated with biallelic nontruncating mutations. However, other characteristics’ variability such as hearing loss onset, progression, symmetry and morphology could not be described by the type of mutation detected. Conclusions: DFNB1 phenotype variability seems to depend by other still unknown factors. The phenotype associated with GJB2/GJB6 mutation should be observed from the perspective of the current understanding of the biological and genetic basis underlying DFNB1 hearing loss. A029 Auditory neuropathy spectrum disorder A. Avinoa ˜ Arias1 , M. Sainz-Quevedo1 , A. Saida Garc´ıa Negro2 . 1 Otolaryngology department, Hospital San Cecilio, Granada, Spain; 2 Speech therapist department, Hospital San Cecilio, Granada, Spain Aim: At the moment the auditory pitch is carried out routine of form in our healthsystem. According to the CODEPEH directives of the 2010, we realised universal screening by means of oto-acoustic emissions, must furthermore be implemented in the children with risk factors to realise simultaneously auditory brainstem evoked response. Within individualized pursuit given the lost probability of auditory of delayed appareance. Methods: We raise a prevalence study, whose sample is all the children who have been implanted in the last five years and that clinical history refers anyone of the factors risk related to auditory neuropathy. Results: Preliminary results show to the clear relation between the different factors from risk and the presence of auditory neuropatthy. The difference of the auditory evolucion of the children based on the risk factor. Conclusions: The criteria of the CODEPEH represents a superb departure point for the precocious diagnosis of this so complex pathology. A030 Value of a learning curve in reducing the medical and surgical complications associated with cochlear implantation H. Al-Muhaimeed, F. Al-Anazy, E. Alwidani, O. Hamed. King Abdulaziz university Hosbetal, King Saud university, Riyadh, Saudi Arabia Aim: To show the learning curve of surgeons in different cochlear implant devices. Patients and Methods: 117 patients were examined and database was reviewed. Posterior tympanotomy was performed in all cases. Results: 82 children and 35 adults were divided into four groups. Fourteen patients were implanted with Nucleus-22, eighty six with
Nucleus-24, eleven with Med-El combi 40 and 6 with Advanced Bionics. There were 7 major and 22 minor complications. Three adult patients were surgically explanted two of them were due to recurrent otitis media and one was due to unexplained serve headache and tinnitus. Four patients were re-implanted because of electrode migration. No complications during the last seven years. Conclusion: Incidence of complications is low and the majority of complications can be managed conservatively. Abnormal rotated cochlear should be suspected in difficult implantation. There is a clear learning curve for the surgeons in our program A031 The value of extended high frequency audiometry in detecting early audiological changes in sickle cell patients F. Al-Anazy, H. Al-Muhaimeed. Department of Otorhinolaryngology, King Abdul Aziz University Hospital College of Medicine, King Saud University, Riyadh, Saudi Arabia Aim: To evaluate the sensitivity of high-frequency audiometry in detecting early audiometric changes in patients with sickle cell disease. Patients and Method: Prospective case control study of 74 patients with homozygous sickle cell disease and 47n individuals matched for age and sex with hemoglobin genotype AA. High-frequency audiometry and conventional audiometry were used to assess hearing Results: A 2-way analysis of variance showed a statistically significant effect of signal frequency and type of patient hearing. Eighteen of 47patients with sickle cell disease had sensorineural hearing loss of more than 25dB at two or more frequencies. SNHL was unilateral in 13 and bilateral in 5. Conclusions: High frequency audiometry is sensitive in detecting early hearing loss in sickle cell patients. Early detection of hearing loss may allow effective measures to be taken to protect hearing. A032 Perception of musical consonance of simultaneously presented tone complexes in cochlear implant users D. Visser, A. Krenmayr, P. Bader, A. Griessner, M. Zangerl, C. Neustetter, M. Lundbeck, C. Zierhofer. C. Doppler Laboratory for Active Implantable Systems, Institute of Ion Physics and Applied Physics, University of Innsbruck, Austria Aim: This study aimed at determining which fundamental frequency ratios are perceived as musically consonant or dissonant by CI users. Material and Methods: 12 normal-hearing listeners and 7 CI users ranked 40 acoustical stimuli according to musical consonance. Each of these stimuli consisted of two simultaneously presented harmonic tone complexes: The base tone always had a fundamental frequency of 170 Hz while the second tone was between 0 to 19 semitones higher than the base. Results: While in normal-hearing listeners a distinct consonance/dissonance pattern was found which corresponded well to musical standards, the CI users mostly only perceived the unison, quint and octave as consonant. Conclusions: Similar to normal-hearing data, the most prominent consonance peaks (unison, quint, octave) are also found in CI users. However, consonance discrimination at other intervals seems to be degraded in CI users, and appears to be more similar to data from hearing-impaired subjects. A033 Immediate post-operative assessment of acute vestibular injury following cochlear implantation S.L. Cushing1,2 , K.A. Gordon1,2 , B.C. Papsin1,2 . 1 Archie’s Cochlear Implant Laboratory, The Hospital for Sick Children, Toronto, Ontario, Canada 2.Department of Otolaryngology-Head University of Toronto, Ontario, Canada
and
Neck
Surgery,
Abstracts, ESPCI 2011 / International Journal of Pediatric Otorhinolaryngology 75 (2011) 1–9
360º insertion depth. Temporal fine structure strategies presenting an explicit temporal code for low-frequency channels should map those channels to apical electrodes to avoid the need for a central remapping of pitch. A028 Unraveling DFNB1 phenotype variability T. Volo1 , C. Morando2 , E. Leonardi2 , S. Ghiselli1 , E. Emanuelli1 , A. Murgia2 , G. Babighian1 , E. Orzan1 . 1 Pediatric Audiology Unit, Otorhinolaryngology and Otosurgery Department, University Hospital of Padova, Padova, Italy; 2 Pediatric Department, University of Padova, Padova, Italy Aim: The aim of the study was to retrospectively evaluate the phenotype and the genotype in a large sample of subjects segregating one or two GJB2/GJB6 mutations. Material and Methods: Hearing loss onset, severity, progression, symmetry and morphology were accurately analysed in 98 subjects with DFNB1 associated deafness. Subjects were followed by the same Audiology Unit since hearing loss diagnosis. Results: As previously reported, the degree of hearing loss associated with biallelic truncating mutations was significantly more severe than the hearing loss associated with biallelic nontruncating mutations. However, other characteristics’ variability such as hearing loss onset, progression, symmetry and morphology could not be described by the type of mutation detected. Conclusions: DFNB1 phenotype variability seems to depend by other still unknown factors. The phenotype associated with GJB2/GJB6 mutation should be observed from the perspective of the current understanding of the biological and genetic basis underlying DFNB1 hearing loss. A029 Auditory neuropathy spectrum disorder A. Avinoa ˜ Arias1 , M. Sainz-Quevedo1 , A. Saida Garc´ıa Negro2 . 1 Otolaryngology department, Hospital San Cecilio, Granada, Spain; 2 Speech therapist department, Hospital San Cecilio, Granada, Spain Aim: At the moment the auditory pitch is carried out routine of form in our healthsystem. According to the CODEPEH directives of the 2010, we realised universal screening by means of oto-acoustic emissions, must furthermore be implemented in the children with risk factors to realise simultaneously auditory brainstem evoked response. Within individualized pursuit given the lost probability of auditory of delayed appareance. Methods: We raise a prevalence study, whose sample is all the children who have been implanted in the last five years and that clinical history refers anyone of the factors risk related to auditory neuropathy. Results: Preliminary results show to the clear relation between the different factors from risk and the presence of auditory neuropatthy. The difference of the auditory evolucion of the children based on the risk factor. Conclusions: The criteria of the CODEPEH represents a superb departure point for the precocious diagnosis of this so complex pathology. A030 Value of a learning curve in reducing the medical and surgical complications associated with cochlear implantation H. Al-Muhaimeed, F. Al-Anazy, E. Alwidani, O. Hamed. King Abdulaziz university Hosbetal, King Saud university, Riyadh, Saudi Arabia Aim: To show the learning curve of surgeons in different cochlear implant devices. Patients and Methods: 117 patients were examined and database was reviewed. Posterior tympanotomy was performed in all cases. Results: 82 children and 35 adults were divided into four groups. Fourteen patients were implanted with Nucleus-22, eighty six with
Nucleus-24, eleven with Med-El combi 40 and 6 with Advanced Bionics. There were 7 major and 22 minor complications. Three adult patients were surgically explanted two of them were due to recurrent otitis media and one was due to unexplained serve headache and tinnitus. Four patients were re-implanted because of electrode migration. No complications during the last seven years. Conclusion: Incidence of complications is low and the majority of complications can be managed conservatively. Abnormal rotated cochlear should be suspected in difficult implantation. There is a clear learning curve for the surgeons in our program A031 The value of extended high frequency audiometry in detecting early audiological changes in sickle cell patients F. Al-Anazy, H. Al-Muhaimeed. Department of Otorhinolaryngology, King Abdul Aziz University Hospital College of Medicine, King Saud University, Riyadh, Saudi Arabia Aim: To evaluate the sensitivity of high-frequency audiometry in detecting early audiometric changes in patients with sickle cell disease. Patients and Method: Prospective case control study of 74 patients with homozygous sickle cell disease and 47n individuals matched for age and sex with hemoglobin genotype AA. High-frequency audiometry and conventional audiometry were used to assess hearing Results: A 2-way analysis of variance showed a statistically significant effect of signal frequency and type of patient hearing. Eighteen of 47patients with sickle cell disease had sensorineural hearing loss of more than 25dB at two or more frequencies. SNHL was unilateral in 13 and bilateral in 5. Conclusions: High frequency audiometry is sensitive in detecting early hearing loss in sickle cell patients. Early detection of hearing loss may allow effective measures to be taken to protect hearing. A032 Perception of musical consonance of simultaneously presented tone complexes in cochlear implant users D. Visser, A. Krenmayr, P. Bader, A. Griessner, M. Zangerl, C. Neustetter, M. Lundbeck, C. Zierhofer. C. Doppler Laboratory for Active Implantable Systems, Institute of Ion Physics and Applied Physics, University of Innsbruck, Austria Aim: This study aimed at determining which fundamental frequency ratios are perceived as musically consonant or dissonant by CI users. Material and Methods: 12 normal-hearing listeners and 7 CI users ranked 40 acoustical stimuli according to musical consonance. Each of these stimuli consisted of two simultaneously presented harmonic tone complexes: The base tone always had a fundamental frequency of 170 Hz while the second tone was between 0 to 19 semitones higher than the base. Results: While in normal-hearing listeners a distinct consonance/dissonance pattern was found which corresponded well to musical standards, the CI users mostly only perceived the unison, quint and octave as consonant. Conclusions: Similar to normal-hearing data, the most prominent consonance peaks (unison, quint, octave) are also found in CI users. However, consonance discrimination at other intervals seems to be degraded in CI users, and appears to be more similar to data from hearing-impaired subjects. A033 Immediate post-operative assessment of acute vestibular injury following cochlear implantation S.L. Cushing1,2 , K.A. Gordon1,2 , B.C. Papsin1,2 . 1 Archie’s Cochlear Implant Laboratory, The Hospital for Sick Children, Toronto, Ontario, Canada 2.Department of Otolaryngology-Head University of Toronto, Ontario, Canada
and
Neck
Surgery,