TY - JOUR
T1 - Assessment of inner ear bone vibrations during auditory stimulation by bone conduction and by soft tissue conduction
AU - Chordekar, Shai
AU - Perez, Ronen
AU - Adelman, Cahtia
AU - Sohmer, Haim
PY - 2013/9
Y1 - 2013/9
N2 - Background: Soft tissue conduction (STC), a recently described mode of auditory stimulation elicited when the clinical bone vibrator is applied to skin sites over the head, neck, and thorax, complements air conduction (AC) and bone conduction (BC), elicited by the same vibrator. The study assessed skull bone vibrations induced during STC and BC stimulation. Methods: The experiments were conducted on fat sand rats. Thresholds of auditory nerve brainstem evoked responses (ABRs) were recorded and compared to the lowest- intensity sound stimuli that elicited vibrations at the bony vestibule of the inner ear detected by a laser Doppler vibrometer. Results: Vibrations were detected during BC but not during STC stimulation. ABR was recorded to both STC and to BC stimulation. Conclusions: Low-intensity STC stimulation does not induce vibrations of the inner ear, showing that STC apparently does not involve mechanisms based on vibrations of bone.
AB - Background: Soft tissue conduction (STC), a recently described mode of auditory stimulation elicited when the clinical bone vibrator is applied to skin sites over the head, neck, and thorax, complements air conduction (AC) and bone conduction (BC), elicited by the same vibrator. The study assessed skull bone vibrations induced during STC and BC stimulation. Methods: The experiments were conducted on fat sand rats. Thresholds of auditory nerve brainstem evoked responses (ABRs) were recorded and compared to the lowest- intensity sound stimuli that elicited vibrations at the bony vestibule of the inner ear detected by a laser Doppler vibrometer. Results: Vibrations were detected during BC but not during STC stimulation. ABR was recorded to both STC and to BC stimulation. Conclusions: Low-intensity STC stimulation does not induce vibrations of the inner ear, showing that STC apparently does not involve mechanisms based on vibrations of bone.
KW - Bone conduction
KW - Laser Doppler vibrometer
KW - Soft tissue conduction
KW - Vibrations
UR - http://www.scopus.com/inward/record.url?scp=84888105072&partnerID=8YFLogxK
U2 - 10.1515/jbcpp-2013-0058
DO - 10.1515/jbcpp-2013-0058
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C2 - 23893679
AN - SCOPUS:84888105072
SN - 0792-6855
VL - 24
SP - 201
EP - 204
JO - Journal of Basic and Clinical Physiology and Pharmacology
JF - Journal of Basic and Clinical Physiology and Pharmacology
IS - 3
ER -