Effects of noise on detection of amplitude increments of sinusoidal vibration of the skin

G. A. Gescheider, R. T. Verrillo, D. G. Pelli

Research output: Contribution to journalArticle

Abstract

Vibrotactile thresholds for detecting a 300-Hz signal in the presence of both a 300-Hz sinusoidal pedestal and a background noise were measured as a function of the amplitudes of the pedestal and noise. Threshold increased monotonically as a function of the amplitude of the noise, but was a nonmonotonic function of the amplitude of the sinusoidal pedestal. Negative masking, in which the pedestal facilitated detection of the test stimulus, was observed in the absence of background noise and in the presence of subthreshold background noise when the pedestal was near or below threshold. Negative masking disappeared when the experiment was conducted in the presence of moderately intense to intense background noise. The results are consistent with a peripheral high-energy threshold for taction.

Original languageEnglish (US)
Pages (from-to)348-353
Number of pages6
JournalJournal of the Acoustical Society of America
Volume91
Issue number1
DOIs
StatePublished - Jan 1992

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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