Simulating the effects of spread of electric excitation on musical tuning and melody identification with a cochlear implant

Anthony J. Spahr, Leonid M. Litvak, Michael Dorman, Ashley R. Bohanan, Lakshmi N. Mishra

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Purpose: To determine why, in a pilot study, only 1 of 11 cochlear implant listeners was able to reliably identify a frequency-to-electrode map where the intervals of a familiar melody were played on the correct musical scale. The authors sought to validate their method and to assess the effect of pitch strength on musical scale recognition in normal-hearing listeners. Method: Musical notes were generated as either sine waves or spectrally shaped noise bands, with a center frequency equal to that of a desired note and symmetrical (log-scale) reduction in amplitude away from the center frequency. The rate of amplitude reduction was manipulated to vary pitch strength of the notes and to simulate different degrees of current spread. The effect of the simulated degree of current spread was assessed on tasks of musical tuning/scaling, melody recognition, and frequency discrimination. Results: Normal-hearing listeners could accurately and reliably identify the appropriate musical scale when stimuli were sine waves or steeply sloping noise bands. Simulating greater current spread degraded performance on all tasks. Conclusions: Cochlear implant listeners with an auditory memory of a familiar melody could likely identify an appropriate frequency-to-electrode map but only in cases where the pitch strength of the electrically produced notes is very high.

Original languageEnglish (US)
Pages (from-to)1599-1606
Number of pages8
JournalJournal of Speech, Language, and Hearing Research
Volume51
Issue number6
DOIs
StatePublished - Dec 1 2008

Fingerprint

Cochlear Implants
listener
Hearing
Noise
Electrodes
scaling
stimulus
discrimination
Recognition (Psychology)
Tuning
Cochlear Implant
Melody
Listeners
performance
Musical Scales
Discrimination (Psychology)

Keywords

  • Cochlear implant
  • Music perception
  • Simulation
  • Spatial selectivity

ASJC Scopus subject areas

  • Speech and Hearing

Cite this

Simulating the effects of spread of electric excitation on musical tuning and melody identification with a cochlear implant. / Spahr, Anthony J.; Litvak, Leonid M.; Dorman, Michael; Bohanan, Ashley R.; Mishra, Lakshmi N.

In: Journal of Speech, Language, and Hearing Research, Vol. 51, No. 6, 01.12.2008, p. 1599-1606.

Research output: Contribution to journalArticle

Spahr, Anthony J. ; Litvak, Leonid M. ; Dorman, Michael ; Bohanan, Ashley R. ; Mishra, Lakshmi N. / Simulating the effects of spread of electric excitation on musical tuning and melody identification with a cochlear implant. In: Journal of Speech, Language, and Hearing Research. 2008 ; Vol. 51, No. 6. pp. 1599-1606.
@article{00e54322f16c4c73a2b291c70a98a88b,
title = "Simulating the effects of spread of electric excitation on musical tuning and melody identification with a cochlear implant",
abstract = "Purpose: To determine why, in a pilot study, only 1 of 11 cochlear implant listeners was able to reliably identify a frequency-to-electrode map where the intervals of a familiar melody were played on the correct musical scale. The authors sought to validate their method and to assess the effect of pitch strength on musical scale recognition in normal-hearing listeners. Method: Musical notes were generated as either sine waves or spectrally shaped noise bands, with a center frequency equal to that of a desired note and symmetrical (log-scale) reduction in amplitude away from the center frequency. The rate of amplitude reduction was manipulated to vary pitch strength of the notes and to simulate different degrees of current spread. The effect of the simulated degree of current spread was assessed on tasks of musical tuning/scaling, melody recognition, and frequency discrimination. Results: Normal-hearing listeners could accurately and reliably identify the appropriate musical scale when stimuli were sine waves or steeply sloping noise bands. Simulating greater current spread degraded performance on all tasks. Conclusions: Cochlear implant listeners with an auditory memory of a familiar melody could likely identify an appropriate frequency-to-electrode map but only in cases where the pitch strength of the electrically produced notes is very high.",
keywords = "Cochlear implant, Music perception, Simulation, Spatial selectivity",
author = "Spahr, {Anthony J.} and Litvak, {Leonid M.} and Michael Dorman and Bohanan, {Ashley R.} and Mishra, {Lakshmi N.}",
year = "2008",
month = "12",
day = "1",
doi = "10.1044/1092-4388(2008/07-0254)",
language = "English (US)",
volume = "51",
pages = "1599--1606",
journal = "Journal of Speech, Language, and Hearing Research",
issn = "1092-4388",
publisher = "American Speech-Language-Hearing Association (ASHA)",
number = "6",

}

TY - JOUR

T1 - Simulating the effects of spread of electric excitation on musical tuning and melody identification with a cochlear implant

AU - Spahr, Anthony J.

AU - Litvak, Leonid M.

AU - Dorman, Michael

AU - Bohanan, Ashley R.

AU - Mishra, Lakshmi N.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Purpose: To determine why, in a pilot study, only 1 of 11 cochlear implant listeners was able to reliably identify a frequency-to-electrode map where the intervals of a familiar melody were played on the correct musical scale. The authors sought to validate their method and to assess the effect of pitch strength on musical scale recognition in normal-hearing listeners. Method: Musical notes were generated as either sine waves or spectrally shaped noise bands, with a center frequency equal to that of a desired note and symmetrical (log-scale) reduction in amplitude away from the center frequency. The rate of amplitude reduction was manipulated to vary pitch strength of the notes and to simulate different degrees of current spread. The effect of the simulated degree of current spread was assessed on tasks of musical tuning/scaling, melody recognition, and frequency discrimination. Results: Normal-hearing listeners could accurately and reliably identify the appropriate musical scale when stimuli were sine waves or steeply sloping noise bands. Simulating greater current spread degraded performance on all tasks. Conclusions: Cochlear implant listeners with an auditory memory of a familiar melody could likely identify an appropriate frequency-to-electrode map but only in cases where the pitch strength of the electrically produced notes is very high.

AB - Purpose: To determine why, in a pilot study, only 1 of 11 cochlear implant listeners was able to reliably identify a frequency-to-electrode map where the intervals of a familiar melody were played on the correct musical scale. The authors sought to validate their method and to assess the effect of pitch strength on musical scale recognition in normal-hearing listeners. Method: Musical notes were generated as either sine waves or spectrally shaped noise bands, with a center frequency equal to that of a desired note and symmetrical (log-scale) reduction in amplitude away from the center frequency. The rate of amplitude reduction was manipulated to vary pitch strength of the notes and to simulate different degrees of current spread. The effect of the simulated degree of current spread was assessed on tasks of musical tuning/scaling, melody recognition, and frequency discrimination. Results: Normal-hearing listeners could accurately and reliably identify the appropriate musical scale when stimuli were sine waves or steeply sloping noise bands. Simulating greater current spread degraded performance on all tasks. Conclusions: Cochlear implant listeners with an auditory memory of a familiar melody could likely identify an appropriate frequency-to-electrode map but only in cases where the pitch strength of the electrically produced notes is very high.

KW - Cochlear implant

KW - Music perception

KW - Simulation

KW - Spatial selectivity

UR - http://www.scopus.com/inward/record.url?scp=56849107798&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56849107798&partnerID=8YFLogxK

U2 - 10.1044/1092-4388(2008/07-0254)

DO - 10.1044/1092-4388(2008/07-0254)

M3 - Article

C2 - 18664681

AN - SCOPUS:56849107798

VL - 51

SP - 1599

EP - 1606

JO - Journal of Speech, Language, and Hearing Research

JF - Journal of Speech, Language, and Hearing Research

SN - 1092-4388

IS - 6

ER -