Department of Clinical Aerospace Medicine, the Fourth Military Medical University, Xi′an 710032, China; 2. Cadet Brigade,the Fourth Military Medical University, Xi′an 710032, China
Objective To compare the effects of liquid crystal display (LCD) and organic light emitting diode (OLED) on the pattern visual evoked potential (PVEP) and the isolated-check visual evoked potential (icVEP). Methods In this self control study, 8 healthy male volunteers (16 eyes), aged 22.1±3.0 years, were recruited to measure PVEPs and icVEPs using the Neucodia Visual Electrophysiological Diagnostic Systems with either the LCD or the OLED． The test sequences of different displays and test items were random． All measurements were performed by the same examiner． Paired t-tests were used to compare the results of the two systems． Results Compared with LCD, the OLED-measured P100 amplitudes of the PVEPs, including 4.8 cpd, 3.2 cpd, 2.4 cpd, and 1.2 cpd, improved significantly (OD: t=2.554, 2.785, 2.508, 2.982; OS: t=3.496, 3.148, 3.954, 2.786; all P＜0.05)．Compared with LCD, the OLED-measured P100 latencies decreased (OD: t=-7.985, -5.069, -14.145, -9.466, OS: t=-9.186, -6.470, -14.700, -22.454, all P＜0.01) as did the N75 (spatial frequencies: 4.8 cpd, 3.2 cpd, 2.4 cpd; OD: t=6.448, 5.181, 3.411; OS: t=8.973, 4.730, 7.937, all P＜0.05） and N135 (OD: t=3.042, 2.576, 6.859; OS: t=3.989, 3.304, 4.657, all P＜0.05） latencies (all P＜0.05)． There were no differences between LCD and OLED for latencies for N75 and N135 (all P＞0.05)． The signal-to-noise ratios of the icVEPs measured by OLED were significantly better than for LCD (OD: t=3.879; OS: t=2.981; both P＜0.05)． Conclusion Different displays have distinct effects on PVEP and icVEP． Strong visual electrophysiological signals were easier to evoke by OLED． It is necessary to set up a corresponding reference value for each display and to record the distinctions between them when analyzing the results of visual electrophysiological examinations．
赵冠华,陈涛,丁一峰,孙凯,严伟明,吴飞,张作明. 不同种类显示器对图形刺激诱发电位的影响[J]. 中华眼视光学与视觉科学杂志, 2017, 19(3): 141-145.
ZHAO Guanhua,CHEN Tao,DING Yifeng,SUN Kai,YAN Weiming,WU Fei,ZHANG Zuoming. The effects of different displays on the isolated-check VEP andpattern VEP. Chinese Journal of Optometry Ophthalmology and Visual science, 2017, 19(3): 141-145. DOI: DOI:10.3760/cma.j.issn.1674-845X.2017.03.004
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