Effect of training on human underwater sound‐localization ability

1975 ◽  
Vol 57 (5) ◽  
pp. 1212-1213 ◽  
Author(s):  
James L. Stouffer ◽  
E. Thomas Doherty ◽  
Harry Hollien
Keyword(s):  
Sound Localization ◽  
Underwater Sound ◽  
Localization Ability

Sound Localization Ability of Young Children With Bilateral Cochlear Implants

2007 ◽  
Vol 28 (4) ◽  
pp. 479-485 ◽  
Author(s):  
Jan-Willem Beijen ◽  
Ad F. M. Snik ◽  
Emmanuel A. M. Mylanus
Keyword(s):  
Young Children ◽  
Cochlear Implants ◽  
Sound Localization ◽  
Bilateral Cochlear Implants ◽  
Localization Ability

Correlation Between the Activity of Single Auditory Cortical Neurons and Sound-Localization Behavior in the Macaque Monkey

2000 ◽  
Vol 83 (5) ◽  
pp. 2723-2739 ◽  
Author(s):  
Gregg H. Recanzone ◽  
Darren C. Guard ◽  
Mimi L. Phan ◽  
Tien-I K. Su
Keyword(s):  
Auditory Cortex ◽  
Sound Localization ◽  
Cortical Neurons ◽  
Primary Auditory Cortex ◽  
Macaque Monkey ◽  
Auditory Space ◽  
Spatial Sensitivity ◽  
Acoustic Space ◽  
Localization Ability ◽  
Primate Cerebral Cortex

Lesion studies have indicated that the auditory cortex is crucial for the perception of acoustic space, yet it remains unclear how these neurons participate in this perception. To investigate this, we studied the responses of single neurons in the primary auditory cortex (AI) and the caudomedial field (CM) of two monkeys while they performed a sound-localization task. Regression analysis indicated that the responses of ∼80% of neurons in both cortical areas were significantly correlated with the azimuth or elevation of the stimulus, or both, which we term “spatially sensitive.” The proportion of spatially sensitive neurons was greater for stimulus azimuth compared with stimulus elevation, and elevation sensitivity was primarily restricted to neurons that were tested using stimuli that the monkeys also could localize in elevation. Most neurons responded best to contralateral speaker locations, but we also encountered neurons that responded best to ipsilateral locations and neurons that had their greatest responses restricted to a circumscribed region within the central 60° of frontal space. Comparing the spatially sensitive neurons with those that were not spatially sensitive indicated that these two populations could not be distinguished based on either the firing rate, the rate/level functions, or on their topographic location within AI. Direct comparisons between the responses of individual neurons and the behaviorally measured sound-localization ability indicated that proportionally more neurons in CM had spatial sensitivity that was consistent with the behavioral performance compared with AI neurons. Pooling the responses across neurons strengthened the relationship between the neuronal and psychophysical data and indicated that the responses pooled across relatively few CM neurons contain enough information to account for sound-localization ability. These data support the hypothesis that auditory space is processed in a serial manner from AI to CM in the primate cerebral cortex.

Auditory Disorder Following Bilateral Temporal Lobe Insult: Report of a Case

1972 ◽  
Vol 37 (4) ◽  
pp. 523-535 ◽  
Author(s):  
James Jerger ◽  
Larry Lovering ◽  
Max Wertz
Keyword(s):  
Hearing Loss ◽  
Temporal Lobe ◽  
Sound Localization ◽  
Severe Hearing Loss ◽  
Present Patient ◽  
Sensitivity Loss ◽  
Significant Difference ◽  
Localization Ability ◽  
Bilateral Lesions ◽  
The Brain

Audiologic data are presented for a patient with bilateral temporal lobe damage. Neuropathology examination of the brain at autopsy confirmed site of lesion. Audiologic results on this patient are contrasted to results obtained in 1969 by Jerger et al. on another patient with presumed bilateral lesions of the temporal lobe. The two patients showed striking similarities. Both experienced transient aphasia but no hearing problems after the first (left-sided) episode. Both reported severe hearing loss after the second (right-sided) episode. In both cases, the presumed sensitivity loss had essentially recovered within three months of the second episode. Both showed marked inability to recognize either single words or sentences. This profound deficit did not improve significantly, even under ideal listening conditions, in either patient during the period of study. In contrast to the striking similarities between the two patients, there was one significant difference. Whereas the 1969 patient could not localize sounds in space, the present patient’s sound localization ability was unimpaired. This finding seemed related to an interaural imbalance in the relation between loudness and signal duration. The 1969 patient had such an imbalance and could not localize effectively. The present patient did not have an imbalance and localized accurately. This finding indicates that impairment in sound localization is not an invariable concomitant of temporal lobe disease.

scholarly journals Subliminal Underwater Sound Localization

1973 ◽  
Vol 53 (1) ◽  
pp. 336-336 ◽  
Author(s):  
H. Hollien ◽  
J. Kinney ◽  
S. Feinstein ◽  
P. Hollien
Keyword(s):  
Sound Localization ◽  
Underwater Sound
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