视觉电生理闪光参数测量误差研究

定翔; 董伟; 刘文丽; 李姣; 陈燕

视觉电生理闪光参数测量误差研究

定翔^1, ,,
董伟²,
刘文丽¹,
李姣¹,
陈燕¹

1.
中国计量科学研究院,北京 100013;
2.
哈尔滨工业大学,黑龙江哈尔滨 150001

基金项目:

国家科技支撑计划项目（2011BAI02B06）

详细信息

通讯作者:
定翔（1984-），男，回族，湖北洪湖人，博士，副研究员，主要从事医用光学计量研究。 Email：dingxiang@nim.ac.cn

中图分类号: TN152+2；TB96
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出版历程
- 刊出日期: 2014-11-14

Measurement errors of flash parameters in visual electrophysiology

1.
National Institute of Metrology,Beijing 100013;
2.
Harbin Institute of Technology,Harbin 150001

摘要

摘要: 闪光参数准确与否对于视觉电生理检查结果有效性具有重要意义。针对视觉电生理闪光参数特点，建立了闪光测量系统等效电路模型，基于传递函数理论分析了闪光测量系统参数对闪光强度、时程和波形测量误差的影响，以氙灯和LED为实验对象研究了系统参数在测量不同类型闪光时的误差。提出了减小测量误差以及消除测量闪光强度和LED闪光时程理论误差的方法并进行了实验验证。采用所述方法在不同系统参数下测量LED闪光强度结果的标准差为0.17%，LED闪光时程结果标准差为0.07%，可认为基本不变，实验与理论分析结果吻合。
- 闪光测量 /
- 动态参数 /
- 氙灯闪光 /
- LED闪光 /
- 视觉电生理
Abstract: The accuracy of flash parameters is critical to visual electrophysiological examination. An equivalent circuit model of the flash measurement system was established according to the characteristics of visual electrophysiological flashes. The influence of parameters of the flash measurement system on measurement error of flash waveform, intensity and duration was analyzed theoretically and experimentally. Xeon lamp and LED flash sources were tested. Experiments were carried out to investigate how measurement errors varied with parameters of the measurement system. The method for reducing the measurement errors respect to different application requirements was proposed, as well as the method to eliminate the theoretical errors when measuring the flash duration of LED and the flash intensity, which were demonstrated by experiments. The intensity and duration of LED flash were measured at different system parameters by using the proposed methods. Results demonstrated that the standard deviation of the flash intensity is 0.17% and that of the duration is 0.07%, which can be regarded as constants, showing good consistence with theoretical analysis.
- flash measurement /
- dynamic parameter /
- Xeon flash /
- LED flash /
- visual electrophysiology

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参考文献(1)

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文章访问数: 1272
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视觉电生理闪光参数测量误差研究

通讯作者:
定翔（1984-），男，回族，湖北洪湖人，博士，副研究员，主要从事医用光学计量研究。 Email：dingxiang@nim.ac.cn

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Measurement errors of flash parameters in visual electrophysiology

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视觉电生理闪光参数测量误差研究

通讯作者: 定翔（1984-），男，回族，湖北洪湖人，博士，副研究员，主要从事医用光学计量研究。 Email：dingxiang@nim.ac.cn

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出版历程

Measurement errors of flash parameters in visual electrophysiology

计量

出版历程

目录

相关数据库

广告合作

友情链接

帮助中心

通讯作者:
定翔（1984-），男，回族，湖北洪湖人，博士，副研究员，主要从事医用光学计量研究。 Email：dingxiang@nim.ac.cn