手臂振动作业对脑干听觉诱发电位和视觉诱发电位及体感诱发电位的影响

Effects of Hand-arm Vibration on the Brain Stem Auditory,Visual and Somatosensory Evoked Potentials

目的研究手臂振动作业对中枢神经系统功能的影响。方法将50名砂轮磨光工分为白指组和接振组,另选取非磨光作业车工28名为对照组,对3组工人进行脑干听觉诱发电位(BAEP)、视觉诱发电位(VEP)及短潜伏期体感诱发电位(SLSEP)的测定。结果与对照组比较,白指组BAEP各波潜伏期及各峰间潜伏期显著延长,接振组Ⅲ波潜伏期及各峰间潜伏期显著延长,差异均有显著性意义(P<0.01);与对照组比较,白指组VEP各波潜伏期显著延长,接振组P100、N135波潜伏期显著延长,差异均有显著性意义(P<0.05);与对照组比较,白指组、接振组SLSEPN9-13波潜伏期显著延长差异均有显著性意义(P<0.05)。结论手臂振动可致中枢神经系统功能的紊乱。

Objective To explore the effects of hand-arm vibration（HAV） on the functions of central nervous system.Methods A total of 50 grinders were chosen and divided into vibration-induced white finger positive or VWF（＋） group and negative or VWF（-） groups.And 28 non grinders were chosen as the control group.The changes of brain stem auditory evoked potential（BAEP）,visual evoked potential（VEP） and short-latency somatosensory evoked potential（SLSEP） were tested in each group.Results Compared with the control group,the latency of each wave and interpeak latencies of BAEP prolonged significantly in VWF（＋） group（P〈0.01）,and the latency of Ⅲ wave and interpeak latencies prolonged significantly in VWF（-） group（P〈0.01）.Compared with the control group,the latency of each wave of VEP prolonged significantly in VWF（＋） group（P〈0.05）,and latencies of P100 wave and N135 wave prolonged significantly in VWF（-） group（P〈0.05）.Compared with the control group,the latency of N9-13 wave of ALSEP prolonged significantly in VWF（＋） group and VWF（-） group（P〈0.05）.Conclusion HAV can lead to the functional disorders of central nervous system.