Thesis (B.Sc)--University of Hong Kong, 2001. / "A dissertation submitted in partial fulfilment of the requirements for the Bachelor of Science (Speech and Hearing Sciences), The University of Hong Kong, April 30, 1999 [i.e. 2001]." Also available in print.

Thesis ( M Med (Anaesthesiology)--University of Limpopo, 2011. / Introduction: Multiple studies have described a variable incidence of transient hearing loss (hypoacousis) from 0.4% to 40% after subarachnoid block, especially in the low-frequencies range (125 – 500 Hz) (1, 2). The mechanism of transient hypoacousis is attributed to leakage of cerebrospinal fluid, which leads to a decrease in perilymph pressure within the cochlear. Hypothesis: The study hypothesis was based on an assumption that hearing loss is more frequent in young patients who undergo spinal anaesthesia in comparison with elderly patients. Objective: 1) To determine the incidence of hearing loss after spinal anaesthesia in the young versus elderly patients. Materials and Methods: Ninety-eight male patients (ASA 1 - 11) scheduled for cystoscopy under spinal anaesthesia were recruited for the study. Recruitment of patients for the study was age-dependent and was divided into two groups: One group (49 patients) had patients aged between 17 and 44 years (Group Y) and the other group had 49 patients aged between 45 and 77 years made up group two (GROUP E). Subarachnoid injection at L3-4 was performed using a standard 22-gauge Quincke spinal needle with patients in the sitting position and 2,5 ml to 3 ml of 0.5% isobaric bupivacaine was administered. Patients were evaluated on the day before spinal anaesthesia by pure tone audiometry at three different frequency sounds viz. 125 – 500 Hz (Low frequency), 500 – 2000 Hz (Speech frequency) and at 2000 – 4000 Hz (High frequency). This assessment was repeated 48 hours after the spinal block was given. Statistical Analysis: Analysis was descriptive providing information on the mean (or median) and standard deviation of the variables for each of the two groups. The results of the audiometry were analyzed using repeated measures analysis of variance and transformation to p-value. Differences in outcomes of the study between the two groups were recorded as being statistically significant if p-value is ≤ 0.05. Results: No patient from the two groups developed hearing loss either at low or high frequencies. However, there was a statistically significant improvement in audiometric results (p-value ranging from 0.0001 and 0.063) 48 hours post-surgery in the elderly group as compared with patients in the younger group. Conclusion: The study revealed no hearing loss post-spinal anaesthesia in both groups. It did, however, show that the elderly group have better hearing acuity at all three frequency levels of sound compared to the younger group after spinal anaesthesia.

No description available.

Thesis (M. Sc.)--University of Hong Kong, 1998. / Includes bibliographical references (leaf 50-54).

published_or_final_version / Speech and Hearing Sciences / Master / Master of Science in Audiology

published_or_final_version / Speech and Hearing Sciences / Master / Master of Science in Audiology

Soldiers rely predominantly on vision to detect targets, yet other senses may cue their sense of sight. Contrarily, most army combat simulations employ only visual cues. The focus of this thesis is to enhance combat simulations by providing a method by which computer-generated entities can detect and locate objects via a phenomenon known as "sound localization." The Auditory Detection Program is used to represent a human's hearing, and data from a sound localization experiment are analyzed to determine how to best represent the event in which an individual hears a sound and then estimates the location of the sound's source. The resulting algorithms are coded into the Army's combat simulation, COMBAT XXI, and the "face-validation" method is used to determine if the algorithms enhance the realism of the simulation. The data analysis consists of Shapiro-Wilks Tests for Normaility, Friedman's Tests for Randomized Block Experiment, and Wilcoxon Rank-Sum Tests using the Bonferroni Correction. Implementing this model in COMBAT XXI improves the simulation by making it more realistic.

Digitized by Kansas Correctional Industries

This thesis explores ways in which technology is influencing the lives of hard of hearing people at the start of the 21st century. The thesis develops and is grounded in a distinction between people who referred to as ‘deaf’ and those who are referred to as ‘hard of hearing.’ It is argued that there is a lack of recognition of the special needs of hard of hearing people in deaf and disability discourses and more generally in everyday communication. This lack of recognition is analogous to the absence of women from many forms of social analysis until the latter part of the 20th century. In light of this clearer specification of the people under consideration, attention shifts to a consideration of the various technologies they can access. The context within which these technologies are used is one in which, unlike many deaf people who form an integrated community that is differentiated and separate from the general society, hard of hearing people have tended to become socially isolated within the hearing community. This understanding of the potential for social isolation allows the specific significance of generic computer technology for this group to come to the fore. As a consequence the thesis focuses upon a detailed examination of the place of a hard of hearing online real community in the lives of a number of hard of hearing people.

Thesis (M. Aud.)--University of Canterbury, 2007. / Typescript (photocopy). Includes bibliographical references (leaves 61-64). Also available via the World Wide Web.