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首页> 外文期刊>Indian journal of physiology and pharmacology >EFFECT OF COLOR OF FLASH STIMULUS ON VARIABILITY OF FLASH VISUAL EVOKED POTENTIAL LATENCIES
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EFFECT OF COLOR OF FLASH STIMULUS ON VARIABILITY OF FLASH VISUAL EVOKED POTENTIAL LATENCIES

机译：闪光刺激颜色对闪存视觉诱发潜在延迟变异性的影响

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Abstract : Visual Evoked Potentials (VEPs) are evoked potentials generated in response to visual stimuli. The flash VEP (FVEP) is used less frequently than pattern-reversal VEP (PR-VEP) because; it shows great variations in both latency and amplitude in normal subjects. The advantage of FVEP is its feasibility in non-cooperative subjects, which circumvents the major limitation of PR-VEP. The present study was undertaken to assess the effect of change of color of flashlight on variability of FVEP latencies. Healthy subjects in the age group of 18-30 years underwent the standard stimulus using white light, followed by altered stimuli done with red and blue light. 2 trials were given for each eye, for each type of stimulus. The same set of studies was repeated at the same clock time the following day. The inter-individual and intra-individual variability in the peak latency of P2 and N2 waveforms was assessed using coefficient of variation (COV). Both inter-individual and intra-individual variability was less when monochromatic light was used. Between red and blue FVEP, inter-individual variability was less in blue FVEP and the results of intra-individual variability was inconclusive. Monochromatic stimulation preferably with blue light reduced both inter-individual and intra-individual variability seen in latency of P2 and N2 waveforms in FVEP and hence recommended in preference to standard white stimulus for FVEP recording.
机译：摘要：视觉诱发电位（VEPS）是响应视觉刺激而产生的潜力。 Flash Vep（FVEP）比模式反转VEP（PR-VEP）更频繁地使用，因为;它显示了正常对象中延迟和幅度的巨大变化。 FVEP的优点是其在非合作科目中的可行性，这些受试者的可行性是避免PEP的主要限制。本研究旨在评估手电筒颜色变化变化对FVEP延迟变异性的影响。 18 - 30年龄组的健康受试者经历了白光的标准刺激，然后用红色和蓝光进行了改变的刺激。每只眼睛给出2种试验，每种刺激都会给出。在第二天的同一时钟时间重复相同的研究组。使用变异系数（COV）评估P2和N2波形的峰值等潜水时间的个体间和互变异性。当使用单色光时，个体间和单独的个体变异性均少。在红色和蓝色FVEP之间，蓝色FVEP间的各种变异性较少，内部变异性的结果不确定。单色刺激优选地具有蓝光，在FVEP中的P2和N2波形的潜伏期内降低了个体间和内部可变异性，因此建议优先于用于FVEP记录的标准白色刺激。

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