scholarly journals Intensive Differential Thresholds for Octave Band Noise

1959 ◽  
Vol 31 (1) ◽  
pp. 128-128
Author(s):  
Arnold M. Small ◽  
W. Edward Bacon ◽  
James L. Fozard
Keyword(s):  
Octave Band ◽  
Band Noise

Decay of Temporary Threshold Shift in Noise

1973 ◽  
Vol 16 (2) ◽  
pp. 267-270 ◽  
Author(s):  
John H. Mills ◽  
Seija A. Talo ◽  
Gloria S. Gordon
Keyword(s):  
Sound Field ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Octave Band ◽  
Band Noise ◽  
Lower Asymptote

Groups of monaural chinchillas trained in behavioral audiometry were exposed in a diffuse sound field to an octave-band noise centered at 4.0 k Hz. The growth of temporary threshold shift (TTS) at 5.7 k Hz from zero to an asymptote (TTS ∞ ) required about 24 hours, and the growth of TTS at 5.7 k Hz from an asymptote to a higher asymptote, about 12–24 hours. TTS ∞ can be described by the equation TTS ∞ = 1.6(SPL-A) where A = 47. These results are consistent with those previously reported in this journal by Carder and Miller and Mills and Talo. Whereas the decay of TTS ∞ to zero required about three days, the decay of TTS ∞ to a lower TTS ∞ required about three to seven days. The decay of TTS ∞ in noise, therefore, appears to require slightly more time than the decay of TTS ∞ in the quiet. However, for a given level of noise, the magnitude of TTS ∞ is the same regardless of whether the TTS asymptote is approached from zero, from a lower asymptote, or from a higher asymptote.

Temporary threshold shift in pinnipeds induced by octave‐band noise in water

1999 ◽  
Vol 106 (4) ◽  
pp. 2251-2251
Author(s):  
David Kastak ◽  
Brandon L. Southall ◽  
Ronald J. Schusterman ◽  
Colleen J. Reichmuth
Keyword(s):  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Octave Band ◽  
Band Noise

scholarly journals The masking of octave-band noise by broad-spectrum noise: A comparison of infant and adult thresholds

1981 ◽  
Vol 30 (2) ◽  
pp. 101-106 ◽  
Author(s):  
Dale Bull ◽  
Bruce A. Schneider ◽  
Sandra E. Trehub
Keyword(s):  
Broad Spectrum ◽  
Octave Band ◽  
Band Noise

scholarly journals Temporal summation of 500-Hz tones and octave-band noise bursts in infants and adults

1995 ◽  
Vol 57 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Kathleen M. Berg ◽  
Amy E. Boswell
Keyword(s):  
Temporal Summation ◽  
Octave Band ◽  
Band Noise

Effects of Infrasound on Involuntary Eye Movement during Fixation

1989 ◽  
Vol 8 (4) ◽  
pp. 130-133 ◽  
Author(s):  
Hiroshi Takigawa ◽  
Fukiko Kawade ◽  
Hiroshi Sakamoto
Keyword(s):  
Eye Movement ◽  
Frequency Band ◽  
Low Frequency ◽  
Octave Band ◽  
Ocular Reflex ◽  
Eyes Closed ◽  
Band Noise ◽  
Vestibulo Ocular Reflex ◽  
Eyes Open ◽  
Healthy Males

This study was undertaken in order to clarify the effects of infrasound on vestibular functions by comparing observations of eye movement under exposure to infrasound and audible noise. Twenty-five healthy males were exposed to a wide octave-band noise, (approx. 125 Hz to 4kHz) or to 16 Hz or 5 Hz at 95 dB for 3 minutes. Their involuntary eye movement with the eyes visually fixed in the horizontal direction was measured before and during exposure with their eyes open and closed. The extent of eye movement before the exposure was significantly greater with eyes closed than with eyes open. This difference was intensified by 5-Hz exposure, but exposure to the noise of 16-Hz infrasound had no effect. The power percentage in the low frequency-band, determined by spectral analysis of the eye movement, was significantly greater with eyes closed than with eyes open before the exposure. This increase in the power percentage in the low frequency-band was reinforced by the 16- and 5-Hz exposures, while no effect was observed upon exposure to the noise. These results suggest that the potential of the vestibulo-ocular reflex was increased upon exposure to infrasound, regardless of whether or not the subjects perceived any sensation.

TTS In Squirrel monkeys to 4 kHz octave band noise of long duration

1977 ◽  
Vol 62 (S1) ◽  
pp. S95-S95
Author(s):  
D. W. Nielsen ◽  
R. G. Turner ◽  
R. Fitton ◽  
D. Fowler
Keyword(s):  
Squirrel Monkeys ◽  
Octave Band ◽  
Band Noise ◽  
Long Duration
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