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1
Predicting speech perception outcomes for children using multichannel cochlear implants [Abstract]
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2
Cognitive processing in children using cochlear implants: the relationship between visual memory, attention, and executive functions and developing language skills
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3
Speech perception outcomes for older patients using the nucleus cochlear implant [Abstract]
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4
Factors affecting speech perception outcomes for older children using multichannel cochlear implants
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5
Short-term auditory memory in children using cochlear implants
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6
Inhibition underlies the encoding of short voice onset times in the ventral cochlear nucleus
Abstract: This is an abstract of a paper from Proceedings of the Australian Neuroscience Society 2001 published by Australian Neuroscience Society. This version is reproduced with the permission of publisher. ; Recent experiments in our laboratory have shown that voice onset time (VOT), the time between consonant release and the first glottal pulse of an ensuing vowel, is effectively encoded by neurons within the ventral cochlear nucleus (VCN). In this investigation we examined the possible neural mechanisms which may underlie this VOT encoding. In male rats anaesthetised with urethane (2.5g1kg i.p), microelectrodes containing 1M potassium acetate, were inserted into the VCN. Speech stimuli consisting of 3 syllables spoken naturally by a male and female were presented at double rate and 3 intensities (/bεt/, /dεt/, and /gεt/ at 45, 65 and 75 dB SPL). Intracellular recordings were made in 12 neurons, eight of which had a response to pure tones typical of spherical bushy neurons, responding in a primary-like (PL) fashion. The remaining cells were classified as either globular bushy (n=2) or stellate cells (n=2). In PL neurons, the VOT period was associated with hyperpolarisation. The duration and amplitude of this hyperpolarising influence was greater for female speech. These PL units showed better encoding of VOT than other cell types in which hyperpolarisation was less evident and action > potentials were often evoked during this period at the highest intensity level. We propose that this hyperpolarisation is due to stimulation of inhibitory sidebands by the high frequency frication noise within the VOT period. This inhibition reduces the probability of action potential generation during the VOT period and enhances the salience of the voice onset enabling more effective encoding of VOT than seen in the auditory nerve. ; 28-31 January
Keyword: cochlear implants; otolaryngology; speech perception; voice onset time
URL: http://hdl.handle.net/11343/27085
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7
A comparison of a new prototype Tickle Talker with a Tactaid 7
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8
Electrode discrimination and speech perception in young children using cochlear implants
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9
Application of the cochlear implant to profoundly hearing impaired adolescents: re-visiting the inclusion criterion for older children
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10
The relationship between speech perception and electrode discrimination in cochlear implantees
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11
Speech perception as a function of electrical stimulation rate: using the nucleus 24 cochlear implant system
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12
The development of speech perception in children using cochlear implants: effects of etiologic factors and delayed milestones
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13
What factors contribute to successful outcomes for children using cochlear implants
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14
Short-term auditory memory in children using cochlear implants and its relevance to receptive language [Abstract]
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15
The effect of rate of stimulation of the auditory nerve on phoneme recognition
Clark, Graeme M.; Grayden, David B.. - : Australian Speech Science and Technology Association, 2000
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16
Speech perception in noise with cochlear implant and hearing aid for implanted adolescents
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17
Generalisation of tactile perceptual skills to new context following tactile-alone word recognition training with the Tickle Talker
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18
Latest results for adults & children using cochlear implants & future implications
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19
Hearing levels and speech perception prior to cochlear implantation - are they predictive of outcomes for adult implant users?
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20
Acquisition of a tactile-alone vocabulary by normally hearing users of the Tickle Talker
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