Effects of Click Intensity and Frequency on the Brain-Stem Auditory Evoked Potentials in the Common Marmoset (Callithrix jacchus)

Journal of Veterinary Medical Science

Mikihiko TOKURIKI¹  Takuma HARADA¹ 

[1] Department of Veterinary Physiology, Faculty of Agriculture, Yamaguchi University

关键词: brain-stem auditory evoked potential (BAEP);    click stimulation;    marmoset;    stimulus frequency;    stimulus intensity;   

DOI  :  10.1292/jvms.59.561

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(43)Brain-stem auditory evoked potentials (BAEPs) were recorded in 20 common marmosets (Callithrix jacchus) to investigate the effects of click frequency up to 99 kHz, in consideration of the higher hearing range of the marmoset, and intensity on wave forms and peak latencies. According to the results of BAEP recordings at frequencies of 4, 32, and 99 kHz, the number of components recorded was affected by the stimulus intensity and the clicks at an intensity of 80 dB peak equivalent sound pressure level (pe SPL) had the maximum number of clear components. Therefore, it was indicated that click stimulations at an intensity of 80 dB pe SPL over a broad range of frequencies appears to be useful for recording the maximum number of components in marmosets and may increase the information obtainable from BAEPs. BAEP latencies were prolonged as the stimulus intensity decreased from 100 to 50 dB pe SPL. The effects of stimulus frequency on the wave latencies and amplitudes in response to 80 dB pe SPL at frequencies between 0.5 and 99 kHz revealed various changes: the amplitude of wave I increased at 16 and 32 kHz, but that of waves III and V increased at 4-8 and 64-99 kHz. These increases in amplitudes of the waves may correlate with higher synchronous activity of the peripheral or central auditory pathways.

【 授权许可】

Unknown