Abstract
Temporal gap detection thresholds were measured between perceptually dissimilar electrical markers in cochlear implant listeners. Both markers were presented to the same electrode pair. The amplitude and pulse rate of the first marker were fixed, and gap thresholds were measured as a function of either the pulse rate or the amplitude of the second marker. In either case, U-shaped functions were obtained, with lowest gap thresholds occurring when the two markers were similar in both amplitude and pulse rate. Because the two markers were presented to the same electrode pair, the data cannot be accounted for on the basis of across-channel interactions. It is hypothesized that when different markers are used, the perceptual discontinuity from the first marker to the second is similar to the sensation of a brief gap, and dominates the gap detection process. Thus, gap threshold functions with electrically dissimilar markers sever more as indicators of perceptual distance between the markers and less as measures of temporal resolution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2515-2519 |
| Number of pages | 5 |
| Journal | Journal of the Acoustical Society of America |
| Volume | 103 |
| Issue number | 5 I |
| DOIs | |
| State | Published - May 1 1998 |
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ASJC Scopus subject areas
- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics
Cite this
Within-channel gap detection using dissimilar markers in cochlear implant listeners. / Chatterjee, Monita; Fu, Qian Jie; Shannon, Robert V.
In: Journal of the Acoustical Society of America, Vol. 103, No. 5 I, 01.05.1998, p. 2515-2519.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Within-channel gap detection using dissimilar markers in cochlear implant listeners
AU - Chatterjee, Monita
AU - Fu, Qian Jie
AU - Shannon, Robert V.
PY - 1998/5/1
Y1 - 1998/5/1
N2 - Temporal gap detection thresholds were measured between perceptually dissimilar electrical markers in cochlear implant listeners. Both markers were presented to the same electrode pair. The amplitude and pulse rate of the first marker were fixed, and gap thresholds were measured as a function of either the pulse rate or the amplitude of the second marker. In either case, U-shaped functions were obtained, with lowest gap thresholds occurring when the two markers were similar in both amplitude and pulse rate. Because the two markers were presented to the same electrode pair, the data cannot be accounted for on the basis of across-channel interactions. It is hypothesized that when different markers are used, the perceptual discontinuity from the first marker to the second is similar to the sensation of a brief gap, and dominates the gap detection process. Thus, gap threshold functions with electrically dissimilar markers sever more as indicators of perceptual distance between the markers and less as measures of temporal resolution.
AB - Temporal gap detection thresholds were measured between perceptually dissimilar electrical markers in cochlear implant listeners. Both markers were presented to the same electrode pair. The amplitude and pulse rate of the first marker were fixed, and gap thresholds were measured as a function of either the pulse rate or the amplitude of the second marker. In either case, U-shaped functions were obtained, with lowest gap thresholds occurring when the two markers were similar in both amplitude and pulse rate. Because the two markers were presented to the same electrode pair, the data cannot be accounted for on the basis of across-channel interactions. It is hypothesized that when different markers are used, the perceptual discontinuity from the first marker to the second is similar to the sensation of a brief gap, and dominates the gap detection process. Thus, gap threshold functions with electrically dissimilar markers sever more as indicators of perceptual distance between the markers and less as measures of temporal resolution.
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U2 - 10.1121/1.422772
DO - 10.1121/1.422772
M3 - Article
VL - 103
SP - 2515
EP - 2519
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
SN - 0001-4966
IS - 5 I
ER -