Literaturdatenbank
Literaturdatenbank |
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Patterson, W. C. (1966). Hearing in the turtle. Journal of Auditory Research, 6(4), 453–464.
Added by: Admin (21 Nov 2009 11:53:21 UTC) |
| Resource type: Journal Article BibTeX citation key: Patterson1966 View all bibliographic details  |
Categories: General Keywords: akustische Kommunikation = acoustic communication, Emydidae, Physiologie = physiology, Schildkröten = turtles + tortoises, Trachemys, Trachemys scripta Creators: Patterson Collection: Journal of Auditory Research |
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| Abstract |
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ABSOLUTE AUDITORY AND VIBRATORY THRESHOLDS WERE OBTAINED IN EACH OF 4 TURTLES (Trachemys scripta) WITH AN AVOIDANCE-CONDITIONING PARADIGM EMPLOYING SHOCK AS THE UCS AND HEAD WITHDRAWAL AS THE RESPONSE. AUDITORY SENSITIVITY TO AIRBORNE STIMULI WAS DETERMINED FROM ABOUT 64-1000 CPS WITH MAXIMUM SENSITIVITY FROM 400-700 CPS. SENSITIVITY TO VIBRATION ACCELERATION IMPARTED TO THE SHELL RANGED FROM 20-800 CPS WITH UNIFORM SENSITIVITY MEASURED IN INCHES/SEC/SEC THROUGHOUT THIS RANGE. CALIBRATION OF SHELL VIBRATION INDUCED BY AERIAL SOUND AT AUDITORY THRESHOLD VALUES INDICATED CLEARLY THAT TURTLES HEAR; THE INDUCED VIBRATION FROM THE LOUDSPEAKER AT AIRBORNE ACOUSTIC THRESHOLD WAS WELL BELOW VIBRATORY THRESHOLD VALUES. BILATERAL TRANSECTION OF THE COLUMELLA HAD DELETERIOUS EFFECTS UPON HEARING, SS RESPONDING TO AIRBORNE SOUND ONLY AT INTENSITY LEVELS SUFFICIENT TO PRODUCE SHELL VIBRATION EQUIVALENT TO THAT AT THE VIBRATION THRESHOLDS. (16 REF.)
Added by: Admin |