A peripheral model of gap detection

2016 ◽  
Vol 140 (4) ◽  
pp. 3329-3329
Author(s):  
Willy Wong ◽  
Hugo Lepage
Keyword(s):  
Gap Detection ◽  
Peripheral Model

Temporal-Gap Detection by Cochlear Prosthesis Users

1989 ◽  
Vol 32 (4) ◽  
pp. 849-856 ◽  
Author(s):  
John P. Preece ◽  
Richard S. Tyler
Keyword(s):  
Magnitude Estimation ◽  
Stimulus Level ◽  
Electrode Placement ◽  
Frequency Effect ◽  
Gap Detection ◽  
Cochlear Prosthesis ◽  
Sensation Level

Minimum-detectable gaps for sinusoidal stimuli were measured for three users of a multi electrode cochlear prosthesis as functions of stimulus level, frequency, and electrode place within the cochlea. Stimulus level was scaled by sensation level and by growth-of-loudness functions generated for each condition by direct magnitude estimation. Minimum-detectable gaps decreased with increase in either sensation level or loudness, up to a plateau. When compared at equal sensation levels, the minimum-detectable gaps decreased with frequency increases. The frequency effect on minimum-detectable gaps is reduced if the data are considered at equal loudness. Comparison across place of stimulation within the cochlea showed minimum-detectable gaps to be shorter for more basal electrode placement at low stimulus levels. No differences in minimum-detectable gap as a function of place were found at higher stimulus levels.

scholarly journals Audiograms, gap detection thresholds, and frequency difference limens in cannabinoid receptor 1 knockout mice

2016 ◽  
Vol 332 ◽  
pp. 217-222 ◽  
Author(s):  
Katrina L. Toal ◽  
Kelly E. Radziwon ◽  
David P. Holfoth ◽  
Matthew A. Xu-Friedman ◽  
Micheal L. Dent
Keyword(s):  
Knockout Mice ◽  
Cannabinoid Receptor ◽  
Frequency Difference ◽  
Gap Detection ◽  
Cannabinoid Receptor 1 ◽  
Detection Thresholds

Correlations among within-Channel and between-Channel Auditory Gap-Detection Thresholds in Normal Listeners

Perception ◽  
10.1068/p5116 ◽  
2004 ◽  
Vol 33 (3) ◽  
pp. 371-378 ◽  
Author(s):  
Dennis P Phillips ◽  
Jennifer C Smith
Keyword(s):  
Gap Detection ◽  
Detection Thresholds

Neural Responses in Primary Auditory Cortex Mimic Psychophysical, Across-Frequency-Channel, Gap-Detection Thresholds

2000 ◽  
Vol 84 (3) ◽  
pp. 1453-1463 ◽  
Author(s):  
Jos J. Eggermont
Keyword(s):  
Auditory Cortex ◽  
Cortical Neurons ◽  
Primary Auditory Cortex ◽  
Noise Burst ◽  
Gap Detection ◽  
Frequency Content ◽  
Neural Responses ◽  
Frequency Channel ◽  
Interval Representations ◽  
Onset Response

Responses of single- and multi-units in primary auditory cortex were recorded for gap-in-noise stimuli for different durations of the leading noise burst. Both firing rate and inter-spike interval representations were evaluated. The minimum detectable gap decreased in exponential fashion with the duration of the leading burst to reach an asymptote for durations of 100 ms. Despite the fact that leading and trailing noise bursts had the same frequency content, the dependence on leading burst duration was correlated with psychophysical estimates of across frequency channel (different frequency content of leading and trailing burst) gap thresholds in humans. The duration of the leading burst plus that of the gap was represented in the all-order inter-spike interval histograms for cortical neurons. The recovery functions for cortical neurons could be modeled on basis of fast synaptic depression and after-hyperpolarization produced by the onset response to the leading noise burst. This suggests that the minimum gap representation in the firing pattern of neurons in primary auditory cortex, and minimum gap detection in behavioral tasks is largely determined by properties intrinsic to those, or potentially subcortical, cells.

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