A wide variety of speech processing strategies for multichannel auditory prostheses were compared in studies of two patients implanted with the UCSF electrode array. Each strategy was evaluated using tests of vowel and consonant confusions, with and without lipreading. Included among the strategies were the compressed analog processor of the present… (More)
Auditory brainstem responses were recorded from an experimental group of 15 children with early histories of recurrent middle ear disease for the purpose of examining the effects of reduced auditory input on auditory brainstem function. The responses from these children were analyzed in terms of absolute latencies, interwave latencies and latency shifts… (More)
The purpose of this investigation was to describe the effects of rate of stimulus presentation on the brainstem electric response in groups selected as models for such brainstem disorders as demyelinating diseases and focal lesions. Two groups, infants and geriatric adults, were chosen as models because of their known neurological differences from a normal… (More)
The acute effects of electroconvulsive therapy on brain stem auditory evoked potentials were investigated in 6 psychiatric inpatients. Even during the induced seizure, no significant effects were noted, a finding consistent with the stability of these far-field potentials.
The utilization of the latency of the brainstem auditory evoked response to estimate the status of high frequency hearing is rapidly becoming a part of the audiologist's clinical armamentarium. Because it is important to utilize the most efficient rate of stimulus presentation, the present investigation was undertaken to provide some initial latency… (More)
The feasibility of utilizing maximum length sequence analysis (MLSA) with newborns was examined on 40 premature infants residing in a neonatal intensive care unit (NICU). Auditory brainstem responses (ABRs) were initially obtained using a conventional stimulus rate of 33.3/sec. Using MLSA, responses were also recorded using much faster stimulus rates… (More)
Organic single crystals provide an ideal model for studying the factors that influence chemical processes in structured media. Reaction trajectories are well defined and reveal the influence of spontaneous mechanical stresses equivalent to tens of thousands of atmospheres. Analysis of molecular and crystal structures helps to explain both local mechanical… (More)