Better time-intensity trade revealed by bilateral giant magnetostrictive bone conduction.
Sound lateralization tests were performed to compare the magnet coil bone-conduction headphone with the giant magnetostrictive bone-conduction headphone using 18 healthy participants. Although, no significant difference between these bone-conduction headphones was obtained for the interaural time difference and interaural intensity difference, a significant difference was obtained for the time-intensity trade. This revealed that the difference between the headphones is apparent in the integration of the heterogeneous sensations of the time and intensity difference at the cognitive level, but no difference is apparent between the homogeneous sensations of the discrimination of interaural time difference or interaural intensity difference at the sensory level. It was concluded that the difference at the cognitive level indicates the better performance of the giant magnetostrictive headphone.
Kuroki
Sozo
S
Department of Sensory and Motor Neuroscience, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. soozoojp@anet.ne.jp
Kaga
Kimitaka
K
D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D001844:Bone Conduction / Q000502:physiology* / Q000528:radiation effects; D004007:Dichotic Listening Tests / Q000379:methods; D004307:Dose-Response Relationship, Radiation; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008280:Magnetics; D008297:Male; D013017:Sound Localization / Q000502:physiology* / Q000528:radiation effects; D013997:Time Factors