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Pitch discrimination of patterned electric stimulationa)
a)Portions of this work were presented at the 2004 American Auditory Society annual meeting, Scottsdale, AZ, 7–9 March 2004.
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10.1121/1.1937228
/content/asa/journal/jasa/118/1/10.1121/1.1937228
http://aip.metastore.ingenta.com/content/asa/journal/jasa/118/1/10.1121/1.1937228

Figures

Image of FIG. 1.
FIG. 1.

The histogram of the interspike intervals for a single neuron fiber in response to a pure tone with frequency of (top panel) and a biphasic pulse train with stimulation rate of (reproduced from Javel).

Image of FIG. 2.
FIG. 2.

(a) The interspike-interval histograms for three different types of stimuli: jittered pulses, probabilistic pulses, and auditory-model-generated pulses (from top to bottom). (b) The pulse trains for the three different types of stimuli. Only the first of the pulse trains are shown here.

Image of FIG. 3.
FIG. 3.

Individual data (panels) in pitch discrimination of jittered pulses in terms of the difference limen (Hz) as a function of the standard deviation at four standard frequencies (100, 250, 500 and ). Each data point is the mean of three trials and the error bars show the standard deviation of these trials.

Image of FIG. 4.
FIG. 4.

The average pitch discrimination data for jittered pulses as a function of the number of active electrodes at four standard frequencies (panels). In each panel, different symbols represent pitch discrimination in difference limens with standard deviation of 0, 0.1, 0.2, and 0.3.

Image of FIG. 5.
FIG. 5.

Individual data (panels) in pitch discrimination of probabilistic pulses in terms of the difference limen (Hz) as a function of the pulse probability at four standard frequencies (100, 250, 500, and ). Each data point is the mean of three trials and the error bars show the standard deviation of these trials.

Image of FIG. 6.
FIG. 6.

The average pitch discrimination data for probabilistic pulses as a function of the number of active electrodes at four standard frequencies (panels). In each panel, different symbols represent pitch discrimination in difference limens with probability of 1, 0.8, 0.5, and 0.3.

Image of FIG. 7.
FIG. 7.

The average pitch discrimination data auditory-model-generated pulses (closed symbols connected by the solid line) and the fixed-rate pulses (open circles connected by the dashed line) as a function of the number of active electrodes at four standard frequencies (panels). Data were averaged across three subjects and different electrode spacing. The error bars show the standard deviation of the three subjects.

Tables

Generic image for table
TABLE I.

Subject information of the three Nucleus-24 cochlear-implant users who participated in this study.

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/content/asa/journal/jasa/118/1/10.1121/1.1937228
2005-07-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pitch discrimination of patterned electric stimulationa)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/118/1/10.1121/1.1937228
10.1121/1.1937228
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