摘要
Objective:Toreportvestibularevokedmyogenicpotentialsfromdifferentrecordingsites(neckextensorormassetermuscles)inminiaturepigsandrats.Methods:Potentialswererecordedusing1000HztoneburstsfromtheneckextensormuscleormassetermuscleinnormaladultBamaminiaturepigsandratsanesthetizedwith3%pentobarbitalsodiumandSumianxinⅡ.Results:At80dBSPL,thefirstpositivewave(Pwave)ofVEMPswasrecognizablein58%ofratswithalatencyof6.45±0.23msandanamplitudeof1.45±0.49μVwhenrecordedfromtheneckextensormuscle,andin50%ofratswithalatencyof6.38±0.34msandanamplitudeof1.57±0.35μVwhenrecordedfromthemassetermuscle.Inminiaturepigs,atthesamestimulusintensity,Pwavewasrecognizablein58%oftheanimalswithalatencyof7.65±0.64msandanamplitudeof1.66±0.34μVwhenrecordedfromtheneckextensormuscle,andin50%oftheanimalswithalatencyof7.65±0.64msandanamplitudeof0.31±0.28μVwhenrecordedfromthemassetermuscle.Conclusion:VEMPcanbeinducedfrombothneckextensorandmassetermusclesintheminiaturepigandrat.Foragivenspecies,thesiteofrecordingaffectsPwaveinductionrateandamplitudebutnotlatency.Consistencyandrepeatabilityanalysissuggeststhatthemassetermuscleisabetterrecordingsiteinminiaturepigswhilethecervicalextensorisabetterrecordingsiteinrats.Foragivenrecordingsite,bothlatencyandamplitudeofthePwaveareslightlygreaterinminiaturepigsthaninrats.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
