Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli.

Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli. Research Abstract Details 

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Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli. Abstract Text:

Ali Israr,Hong Z Tan,Charlotte M Reed,

Frequency and amplitude discrimination thresholds along the kinesthetic to cutaneous continuum were evaluated on the left index fingerpad using a multifinger tactual display. Target stimuli were presented either in isolation (no-masker condition) or in the presence of masking stimuli (one- or two-masker conditions). Six reference target signals in the frequency range 2-300 Hz (two each from low-, medium-, and high-frequency regions) and at an amplitude of either 20 or 35 dB sensation levels (SL) were used. In the no-masker condition, the range of frequency Weber fraction was 0.13-0.38 and 0.14-0.28, and the range of amplitude discrimination threshold was 1.82-2.98 dB and 1.65-2.71 dB, at 20 and 35 dB SL, respectively. In the masking conditions, average frequency Weber fractions rose to 0.60 and 0.46, and average amplitude thresholds rose to 3.63 and 3.72 dB, at 20 and 35 dB SL, respectively. In general, thresholds were largest in the two-masker condition and lowest in the no-masker condition. Although the frequency and amplitude thresholds generally increased in the presence of masking stimuli, there was some indication of channel independence for low- and high-frequency target stimuli. The implications of the results for tactual communication of speech are discussed.

Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli. Publishing Authors By Initials

A Israr,HZ Tan,CM Reed,

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Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of the Acoustical Society of America

VOLUME: 120

Page Numbers: 2789-800

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 0001-4966

DAY: 30

MONTH: Nov

YEAR: 2006

Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

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Grant and Affiliation Information for Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli.

AFFILIATION: Haptic Interface Research Laboratory, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907, USA. israr@purdue.edu

Country: United States

AGENCY: United States NIDCD

GRANT: R01 DC00126

ACRONYM: DC

MEDLINETA: J Acoust Soc Am

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