The spatial unmasking of pure tones by laboratory mice

Hearing in mice has been difficult to measure behaviorally. With GSR as the basic tool, the sensitivity curve to pure tones in mice has been successfully outlined. The most sensitive frequency-intensity combination was 15 000 cps at 0-5 dB re: 0.0002 dyne/cm 2 , with responses noted from 1 000 to beyond 70 000 cps. Some problems of reliability of conditioning were encountered, as well as findings concerning the inverse relationship between the size of GSR to unattenuated tones and the sound pressure necessary to elicit conditioned responses at or near threshold. These data agree well with the sensitivity of single units of the eighth nerve of the mouse.

Download Full-text

Role of pinnae and head movements in localizing pure tones 1The authors would like to thank Mr. Remi Humbert for implementing the experiment in Turbo Pascal and for his further assistance.

Swiss Journal of Psychology ◽

10.1024//1421-0185.58.3.170 ◽

1999 ◽

Vol 58 (3) ◽

pp. 170-179 ◽

Cited By ~ 4

Author(s):

Barbara S. Muller ◽

Pierre Bovet

Keyword(s):

Sound Source ◽

Head Movement ◽

Movement Analysis ◽

Head Movements ◽

Sound Sources ◽

Localization Accuracy ◽

Sound Effects ◽

Posterior Quadrant ◽

Localization Performance ◽

Pure Tones

Twelve blindfolded subjects localized two different pure tones, randomly played by eight sound sources in the horizontal plane. Either subjects could get information supplied by their pinnae (external ear) and their head movements or not. We found that pinnae, as well as head movements, had a marked influence on auditory localization performance with this type of sound. Effects of pinnae and head movements seemed to be additive; the absence of one or the other factor provoked the same loss of localization accuracy and even much the same error pattern. Head movement analysis showed that subjects turn their face towards the emitting sound source, except for sources exactly in the front or exactly in the rear, which are identified by turning the head to both sides. The head movement amplitude increased smoothly as the sound source moved from the anterior to the posterior quadrant.

Download Full-text

Loudness perception for pure tones and for speech

PsycEXTRA Dataset ◽

10.1037/e526782009-001 ◽

1950 ◽

Author(s):

J. Donald Harris ◽

Cecil K. Myers

Keyword(s):

Pure Tones

Download Full-text

Genetic and Territory Effects on Social Behaviour and Testicular Function of Laboratory Mice in Dominance Hierarchy Model

PsycEXTRA Dataset ◽

10.1037/e554382012-138 ◽

2008 ◽

Author(s):

Arkady Bragin ◽

Irina Salomacheva ◽

Alexander Osadchuk

Keyword(s):

Social Behaviour ◽

Dominance Hierarchy ◽

Testicular Function ◽

Laboratory Mice ◽

Hierarchy Model

Download Full-text

Absolute Pitch and Its Frequency Range

Archives of Acoustics ◽

10.2478/v10168-011-0020-1 ◽

2011 ◽

Vol 36 (2) ◽

pp. 251-266 ◽

Cited By ~ 4

Author(s):

Andrzej Rakowski ◽

Piotr Rogowski

Keyword(s):

Single Case ◽

Random Order ◽

Absolute Pitch ◽

Screening Tests ◽

Music Students ◽

Frequency Range ◽

Musical Scale ◽

Loudness Level ◽

Pure Tones ◽

Upper Boundary

AbstractThis paper has two distinct parts. Section 1 includes general discussion of the phenomenon of "absolute pitch" (AP), and presentation of various concepts concerning definitions of "full", "partial" and "pseudo" AP. Sections 2-4 include presentation of the experiment concerning frequency range in which absolute pitch appears, and discussion of the experimental results. The experiment was performed with participation of 9 AP experts selected from the population of 250 music students as best scoring in the pitch-naming piano-tone screening tests. Each subject had to recognize chromas of 108 pure tones representing the chromatic musical scale of nine octaves from E0 to D#9. The series of 108 tones was presented to each subject 60 times in random order, diotically, with loudness level about 65 phon. Percentage of correct recognitions (PC) for each tone was computed. The frequency range for the existence of absolute pitch in pure tones, perceived by sensitive AP possessors stretches usually over 5 octaves from about 130.6 Hz (C3) to about 3.951 Hz (B7). However, it was noted that in a single case, the upper boundary of AP was 9.397 Hz (D9). The split-halves method was applied to estimate the reliability of the obtained results.

Download Full-text