On- and off-frequency compression estimated using a new version of the additivity of forward masking technique

Psychology

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https://doi.org/10.1121/1.3455844
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Keywords

PERIPHERAL AUDITORY COMPRESSION, MEMBRANE RESPONSE FUNCTIONS, SENSORINEURAL HEARING-LOSS, INNER HAIR CELL, BASILAR-MEMBRANE, CHINCHILLA COCHLEA, TUNING CURVES, OLIVOCOCHLEAR REFLEX, OTOACOUSTIC EMISSION, POTASSIUM CURRENTS

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On- and off-frequency compression estimated using a new version of the additivity of forward masking technique. / Plack, Christopher J.; Arifianto, Dhany.
In: Journal of the Acoustical Society of America, Vol. 128, No. 2, 08.2010, p. 771-786.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{3de38cd70bbc4f4fa8c6a52db06a46b8,

title = "On- and off-frequency compression estimated using a new version of the additivity of forward masking technique",

abstract = "On- and off-frequency compression at the 4000- and 8000-Hz cochlear places were estimated using a new version of the additivity of forward masking (AFM) technique, that measures the effects of combining two non-overlapping forward maskers. Instead of measuring signal thresholds to estimate compression of the signal as in the original AFM technique, the decrease in masker threshold in the combined-masker condition compared to the individual-masker conditions is used to estimate compression of the masker at the signal place. By varying masker frequency it is possible to estimate off-frequency compression. The maskers were 500-Hz-wide bands of noise, and the signal was a brief pure tone. Compression at different levels was estimated using different overall signal levels, or different masker-signal intervals. It was shown that the new AFM technique and the original AFM technique produce consistent results. Considerable compression was observed for maskers well below the signal frequency, suggesting that the assumption of off-frequency linearity used in other techniques may not be valid. Reducing the duration of the first masker from 200 to 20 ms reduced the compression exponent in some cases, suggesting a possible influence of olivocochlear efferent activity. ",

keywords = "PERIPHERAL AUDITORY COMPRESSION, MEMBRANE RESPONSE FUNCTIONS, SENSORINEURAL HEARING-LOSS, INNER HAIR CELL, BASILAR-MEMBRANE, CHINCHILLA COCHLEA, TUNING CURVES, OLIVOCOCHLEAR REFLEX, OTOACOUSTIC EMISSION, POTASSIUM CURRENTS",

author = "Plack, {Christopher J.} and Dhany Arifianto",

year = "2010",

month = aug,

doi = "10.1121/1.3455844",

language = "English",

volume = "128",

pages = "771--786",

journal = "Journal of the Acoustical Society of America",

issn = "0001-4966",

publisher = "Acoustical Society of America",

number = "2",

}

RIS

TY - JOUR

T1 - On- and off-frequency compression estimated using a new version of the additivity of forward masking technique

AU - Plack, Christopher J.

AU - Arifianto, Dhany

PY - 2010/8

Y1 - 2010/8

N2 - On- and off-frequency compression at the 4000- and 8000-Hz cochlear places were estimated using a new version of the additivity of forward masking (AFM) technique, that measures the effects of combining two non-overlapping forward maskers. Instead of measuring signal thresholds to estimate compression of the signal as in the original AFM technique, the decrease in masker threshold in the combined-masker condition compared to the individual-masker conditions is used to estimate compression of the masker at the signal place. By varying masker frequency it is possible to estimate off-frequency compression. The maskers were 500-Hz-wide bands of noise, and the signal was a brief pure tone. Compression at different levels was estimated using different overall signal levels, or different masker-signal intervals. It was shown that the new AFM technique and the original AFM technique produce consistent results. Considerable compression was observed for maskers well below the signal frequency, suggesting that the assumption of off-frequency linearity used in other techniques may not be valid. Reducing the duration of the first masker from 200 to 20 ms reduced the compression exponent in some cases, suggesting a possible influence of olivocochlear efferent activity.

AB - On- and off-frequency compression at the 4000- and 8000-Hz cochlear places were estimated using a new version of the additivity of forward masking (AFM) technique, that measures the effects of combining two non-overlapping forward maskers. Instead of measuring signal thresholds to estimate compression of the signal as in the original AFM technique, the decrease in masker threshold in the combined-masker condition compared to the individual-masker conditions is used to estimate compression of the masker at the signal place. By varying masker frequency it is possible to estimate off-frequency compression. The maskers were 500-Hz-wide bands of noise, and the signal was a brief pure tone. Compression at different levels was estimated using different overall signal levels, or different masker-signal intervals. It was shown that the new AFM technique and the original AFM technique produce consistent results. Considerable compression was observed for maskers well below the signal frequency, suggesting that the assumption of off-frequency linearity used in other techniques may not be valid. Reducing the duration of the first masker from 200 to 20 ms reduced the compression exponent in some cases, suggesting a possible influence of olivocochlear efferent activity.

KW - PERIPHERAL AUDITORY COMPRESSION

KW - MEMBRANE RESPONSE FUNCTIONS

KW - SENSORINEURAL HEARING-LOSS

KW - INNER HAIR CELL

KW - BASILAR-MEMBRANE

KW - CHINCHILLA COCHLEA

KW - TUNING CURVES

KW - OLIVOCOCHLEAR REFLEX

KW - OTOACOUSTIC EMISSION

KW - POTASSIUM CURRENTS

U2 - 10.1121/1.3455844

DO - 10.1121/1.3455844

M3 - Journal article

VL - 128

SP - 771

EP - 786

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 2

ER -

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