Changes in the integration of self motion and auditory spatial cues with age, hearing impairment, and use of hearing devices

2015 ◽  
Vol 137 (4) ◽  
pp. 2203-2203
Author(s):  
W. O. Brimijoin ◽  
Micheal A. Akeroyd
Keyword(s):  
Hearing Impairment ◽  
Spatial Cues ◽  
Hearing Devices ◽  
Auditory Spatial Cues ◽  
Self Motion

Neural Correlates in the Processing of Auditory Spatial Cues and Stimuli Direction

2007 ◽  
Author(s):  
Marco Sperduti ◽  
Ralf Veit ◽  
Andrea Caria ◽  
Paolo Belardinelli ◽  
Niels Birbaumer ◽  
...  
Keyword(s):  
Neural Correlates ◽  
Spatial Cues ◽  
Auditory Spatial Cues

Auditory Spatial Cueing in Visual Search Tasks: Effects of Amplitude, Contrast and Duration

1995 ◽  
Vol 39 (1) ◽  
pp. 109-113 ◽  
Author(s):  
Thomas Z. Strybel ◽  
Jan M. Boucher ◽  
Greg E. Fujawa ◽  
Craig S. Volp
Keyword(s):  
Visual Search ◽  
Visual Field ◽  
Peripheral Visual Field ◽  
Search Performance ◽  
Spatial Cues ◽  
Spatial Cueing ◽  
Search Tasks ◽  
Auditory Spatial Cues

The effectiveness of auditory spatial cues in visual search performance was examined in three experiments. Auditory spatial cues are more effective than abrupt visual onsets when the target appears in the peripheral visual field or when the contrast of the target is degraded. The duration of the auditory spatial cue did not affect search performance.

System And Method For Generating Auditory Spatial Cues

2011 ◽  
Vol 130 (4) ◽  
pp. 2313 ◽  
Author(s):  
Graham Naylor ◽  
S. Gert Weinrich
Keyword(s):  
Spatial Cues ◽  
Auditory Spatial Cues

scholarly journals Subthreshold resonance properties contribute to the efficient coding of auditory spatial cues

2014 ◽  
Vol 111 (22) ◽  
pp. E2339-E2348 ◽  
Author(s):  
M. W. H. Remme ◽  
R. Donato ◽  
J. Mikiel-Hunter ◽  
J. A. Ballestero ◽  
S. Foster ◽  
...  
Keyword(s):  
Spatial Cues ◽  
Efficient Coding ◽  
Resonance Properties ◽  
Subthreshold Resonance ◽  
Auditory Spatial Cues

scholarly journals Influence of envelope waveform on ITD sensitivity of neurons in the auditory midbrain

2017 ◽  
Vol 118 (4) ◽  
pp. 2358-2370 ◽  
Author(s):  
David Greenberg ◽  
Jessica J. M. Monaghan ◽  
Mathias Dietz ◽  
Torsten Marquardt ◽  
David McAlpine
Keyword(s):  
High Frequency ◽  
Spatial Information ◽  
Critical Factor ◽  
Neural Firing ◽  
Spatial Cues ◽  
Sound Energy ◽  
Factors Affecting ◽  
Stimulus Energy ◽  
Hearing Devices ◽  
Neuron Electrophysiology

Interaural time differences (ITDs) conveyed by the modulated envelopes of high-frequency sounds can serve as a cue for localizing a sound source. Klein-Hennig et al. ( J Acoust Soc Am 129: 3856, 2011) demonstrated the envelope attack (the rate at which stimulus energy in the envelope increases) and the duration of the pause (the interval between successive envelope pulses) as important factors affecting sensitivity to envelope ITDs in human listeners. Modulated sounds with rapid attacks and long pauses produce the lowest ITD discrimination thresholds. The duration of the envelope’s sustained component (sustain) and the rate at which stimulus energy falls at the offset of the envelope (decay) are only minor factors. We assessed the responses of 71 single neurons, recorded from the midbrains of 15 urethane-anesthetized tri-colored guinea pigs, to envelope shapes in which the four envelope components, i.e., attack, sustain, decay, and pause, were systematically varied. We confirmed the importance of the attack and pause components in generating ITD-sensitive responses. Analysis of neural firing rates demonstrated more neurons (49/71) show ITD sensitivity in response to “damped” stimuli (fast attack and slow decay) compared with “ramped” stimuli (slow attack and fast decay) (14/71). Furthermore, the lowest threshold for the damped stimulus (91 μs) was lower by a factor of 4 than that for the temporally reversed ramped envelope shape (407 μs). The data confirm the importance of fast attacks and optimal pause durations in generating sensitivity to ITDs conveyed in the modulated envelopes of high-frequency sounds and are incompatible with models of ITD processing based on the integration of sound energy over time. NEW & NOTEWORTHY Using single-neuron electrophysiology, we show that the precise shape of a sound’s “energy envelope” is a critical factor in determining how well midbrain neurons are able to convey information about auditory spatial cues. Consistent with human behavioral performance, sounds with rapidly rising energy and relatively long intervals between energy bursts are best at conveying spatial information. The data suggest specific sound energy patterns that might best be applied to hearing devices to aid spatial listening.

scholarly journals Re-weighting of Sound Localization Cues by Audiovisual Training

2019 ◽  
Author(s):  
Daniel P. Kumpik ◽  
Connor Campbell ◽  
Jan W.H. Schnupp ◽  
Andrew J King
Keyword(s):  
Sound Localization ◽  
Visual Cues ◽  
Transfer Functions ◽  
Contextual Information ◽  
Auditory Localization ◽  
Spatial Cues ◽  
Auditory Cues ◽  
Cue Weighting ◽  
Auditory Spatial Cues ◽  
Interaural Level Differences

AbstractSound localization requires the integration in the brain of auditory spatial cues generated by interactions with the external ears, head and body. Perceptual learning studies have shown that the relative weighting of these cues can change in a context-dependent fashion if their relative reliability is altered. One factor that may influence this process is vision, which tends to dominate localization judgments when both modalities are present and induces a recalibration of auditory space if they become misaligned. It is not known, however, whether vision can alter the weighting of individual auditory localization cues. Using non-individualized head-related transfer functions, we measured changes in subjects’ sound localization biases and binaural localization cue weights after ~55 minutes of training on an audiovisual spatial oddball task. Four different configurations of spatial congruence between visual and auditory cues (interaural time differences (ITDs) and frequency-dependent interaural level differences (interaural level spectra, ILS) were used. When visual cues were spatially congruent with both auditory spatial cues, we observed an improvement in sound localization, as shown by a reduction in the variance of subjects’ localization biases, which was accompanied by an up-weighting of the more salient ILS cue. However, if the position of either one of the auditory cues was randomized during training, no overall improvement in sound localization occurred. Nevertheless, the spatial gain of whichever cue was matched with vision increased, with different effects observed on the gain for the randomized cue depending on whether ITDs or ILS were matched with vision. As a result, we observed a similar up-weighting in ILS when this cue alone was matched with vision, but no overall change in binaural cue weighting when ITDs corresponded to the visual cues and ILS were randomized. Consistently misaligning both cues with vision produced the ventriloquism aftereffect, i.e., a corresponding shift in auditory localization bias, without affecting the variability of the subjects’ sound localization judgments, and no overall change in binaural cue weighting. These data show that visual contextual information can invoke a reweighting of auditory localization cues, although concomitant improvements in sound localization are only likely to accompany training with fully congruent audiovisual information.

scholarly journals Awareness of typical speech-language development among parents of children with hearing impairment

2021 ◽  
Vol 7 (7) ◽  
pp. 1136
Author(s):  
Pooja Pallavi ◽  
Aarti P. Waknis
Keyword(s):  
Language Development ◽  
Hearing Impairment ◽  
Active Role ◽  
Speech And Language ◽  
Significant Difference ◽  
Hearing Devices ◽  
Parental Counseling ◽  
Speech And Language Development ◽  
Normal Speech ◽  
Group 1

<p class="abstract"><strong>Background:</strong> Parents of children with hearing impairment who are aware of normal speech-language development play an effective and active role in the early detection, diagnosis, and habilitation of these children. Hence this study was aimed to explore the level of awareness about normal speech and language milestones in parents of children with hearing impairment.</p><p class="abstract"><strong>Methods:</strong> Questionnaire assessing the parents’ awareness of speech-language development in children from birth to 3 years was administered on 80 parents of children (birth to 5 years) with hearing impairment. These included 40 parents of children recently diagnosed with hearing impairment (group 1 HI-R) and 40 parents of children with hearing impairment who were fitted with appropriate hearing devices and enrolled in a speech and language habilitation program (group II HI-T).  </p><p class="abstract"><strong>Results:</strong> Results indicated that the level of awareness was moderate for both the groups for semantic and morphosyntax domains as well as total scores, but was low to moderate for the pragmatic domain. There was no statistically significant difference in the level of awareness between the two groups.</p><p class="abstract"><strong>Conclusions:</strong> Moderate awareness levels indicates that parents of children with hearing impairment need to be made aware about the normal speech and language development so that it can guide them in the habilitation process. This information although important does not appear to have been provided to the parents of children already undergoing habilitation. Thus, there is need of including this as a goal in parental counseling.</p>

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