- Hearing Loss and Rehabilitation
- Hearing, Cochlea, Tinnitus, Genetics
- Vestibular and auditory disorders
- Ear Surgery and Otitis Media
- Ophthalmology and Eye Disorders
- Ear and Head Tumors
- EEG and Brain-Computer Interfaces
- Hearing Impairment and Communication
- Neural dynamics and brain function
- Glaucoma and retinal disorders
- Cerebral Venous Sinus Thrombosis
- Acoustic Wave Phenomena Research
- Neuroscience and Music Perception
- Speech and Audio Processing
- Neuroscience and Neural Engineering
- Orthopedic Surgery and Rehabilitation
- Voice and Speech Disorders
- Head and Neck Anomalies
- Circadian rhythm and melatonin
- Tracheal and airway disorders
- Airway Management and Intubation Techniques
- Facial Nerve Paralysis Treatment and Research
- Noise Effects and Management
- Plant Parasitism and Resistance
- Biological Control of Invasive Species
The University of Sydney
2009-2022
Cochlear (Australia)
2008-2022
Robert Jones and Agnes Hunt Orthopaedic Hospital
2022
Royal Prince Alfred Hospital
1991-2016
Children's Hospital at Westmead
1995-2016
Macquarie University
2016
National Health and Medical Research Council
2016
Sydney Children's Hospital
1992-2016
NextSense
2015
Sydney Children’s Hospitals Network
2012-2014
Conclusion: Grading of endolymphatic hydrops in the vestibule and cochlea using magnetic resonance imaging (MRI) is proposed (2008 Nagoya scale). Objective: To standardize evaluation both MRI. Patients methods: The space was evaluated after intratympanic gadolinium injection three-dimensional fluid attenuated (3D-FLAIR) MRI real inversion recovery (3D-real IR) Results: A simple three-stage grading system acceptable for cochlea: none, mild, significant. In vestibule, determined by ratio area...
Abstract Following inadvertent destruction of the left vestibular labyrinth during stapedectomy, a patient developed transient abnormality posture consisting leftward ocular counterrolling, head tilting, and right‐over‐left skew deviation. This postural pattern, known as “ocular tilt reaction,” is normal compensatory response dependent utricle to tilting. In this patient, unopposed action intact right was presumably responsible for appearance reaction.
Patients with a fluctuating hearing loss, episodic vertigo and tinnitus no known aetiological cause were investigated as cases of Menière's disorder. Transtympanic electrocochleography was found to be helpful in reaching the diagnosis an inner ear In 65% patients, large DC potential recorded which caused apparent widening summating potential/action (SP/AP) waveform. This thought SP enhanced relative AP component, believed related directly presence endolymphatic hydrops. A method is described...
Clinical and pathological findings are reported in three cases of Shy-Drager syndrome with laryngeal stridor severe enough to require tracheostomy. Indirect laryngoscopy all revealed a failure abduct the vocal cords properly resulting narrowing glottic airway. Histological studies showed marked atrophy posterior crico-arytenoid muscles little other muscles. The have sole responsibility abducting cords, so it is concluded that patient's was caused by selective paralysis these were suggestive...
Objectives: It can be difficult to distinguish vestibular migraine (VM) from Menière’s disease (MD) in its early stages. Using vestibular-evoked myogenic potentials (VEMPs), we sought identify test parameters that would help discriminate between these two disorders. Methods: We first recorded ocular and cervical VEMPs (oVEMP/cVEMP) air-conducted clicks bone-conducted vibration 30 control participants, participants with clinically definite VM probable VM. Results were compared a group of 60...
To assess cochlear implant (CI) outcomes, and factors affecting for children with aplasia/ hypoplasia of the cochlea nerve. We also developed a new grading system nerves internal auditory meatus (IAM) nerve classification.Retrospective patient review.Tertiary referral hospital program.Children 0 to 16 years inclusive CI who had absent/hypoplastic on magnetic resonance imaging (MRI).Cochlear implant.MRI, trans-tympanic electrical brainstem response, intraoperative Neural Response Telemetry,...
Objective The objective of this study was to identify common factors affecting speech perception scores in children with cochlear implants. Design Speech data for 167 implanted were collected at two implant centres Melbourne and Sydney. comprised audition-alone on open-set word sentence tests. Children selected the basis that they had a Nucleus 22-electrode implant. average age 5 yr. Information also about 12 may have influenced each child. Analysis covariance used significantly affected...
Objective To determine the prevalence of additional disabilities in a pediatric cochlear population, to identify medical and radiologic conditions associated with disabilities, effect on speech perception language at 12 months postoperatively. Study Design Retrospective case review. Setting Tertiary referral center implant program. Patients Records were reviewed for children 0 16 years old inclusive, who had implant–related operations over 12-month period. Interventions Diagnostic...
Transtympanic electrocochleography (ECoG) was performed on 32 normal ears, 40 ears affected by hair cell damage without any evidence of endolymphatic hydrops (sensory damage) and 44 established Menière's disease. The amplitude the summating potential (SP) action (AP) were measured at a click stimulus intensity level 100 dB HL. SP expressed as percentage AP amplitude. In mean SP/AP ratio 25% (range 10%-63%). sensory damage, 13% 0%-29%), in 51% 29%-89%). this series, an 29% provided diagnostic...
The physiological mechanisms underlying auditory neuropathy (AN) remain unclear and it is likely that the multiple disruptions are classified under broadly defined term. Cochlear implantation being more widely used in this population to bypass suspected site-of-lesion although a number of cases have been identified within Sydney Implant Centre where management strategy has unsuccessful. It relates different AN.To investigate AN, frequency-specific round window electrocochleography (ECochG)...
<h3>Objectives</h3> This study aimed to explore healthcare professionals' (HCPs') perspectives of asthma through their drawings, and responses when viewing patients' drawings experiences asthma. <h3>Design</h3> A qualitative exploratory with a purposive, convenience sample participants. Participants were asked first express in drawing, which was followed by review made patients <h3>Setting</h3> Primary tertiary HCPs from Sydney, Australia. <h3>Participants</h3> Twenty-three range health...
Thirteen patients with Meniere's disorder were tested using transtympanic electrocochleography during glycerol dehydration. The most common finding was a decrease in the negative summating potential and this appeared to be more sensitive indicator of changes occurring cochlea than pure tone audiometry speech discrimination. A pathophysiological explanation for observation is offered possibility as pointer prognosis endolymphatic sac surgery discussed.
Conclusion: Transtympanic electrocochleography (TT ECochG) is helpful for the confirmation of Meniere's disease using tone burst stimuli to measure amplitude frequency specific summating potentials (SP) but not when click evoked potential versus action ratio (SP/AP). Objectives: To evaluate effectiveness TT ECochG as a means confirming clinical diagnosis disease. Patients and methods: A total 2717 patients were referred between August 1998 September 2008. Each patient was assessed...
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A straight, vertical post-aural incision for the 'Cochlear' multichannel cochlear implant has been evaluated in 52 patients (20 adults and 32 children). Nineteen of children were under three years age five these two age. The 7 cm long is placed approximately 3 mm behind post-auricular crease runs from tip mastoid to a point above superior attachment pinna. heals within several days. Because straight interruption blood supply flaps raised least possible. This also minimizes possibility scalp...