比较搜索线圈和红外眼动追踪记录的眼动情况。
Comparing eye movements recorded by search coil and infrared eye tracking.
作者信息
Schmitt Kai-Uwe, Muser Markus H, Lanz Christian, Walz Felix, Schwarz Urs
机构信息
Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Gloriastrasse 35, 8092, Zurich, Switzerland.
出版信息
J Clin Monit Comput. 2007 Feb;21(1):49-53. doi: 10.1007/s10877-006-9057-5. Epub 2006 Nov 22.
OBJECTIVE
The performance of a new video-based infrared eye tracker (IR) was compared to the magnetic search coil technique (SC). Since the IR offers interesting possibilities as a diagnostic tool in neuro-ophthalmology, it was investigated whether the new device has overcome shortcomings that were reported from former IR systems.
METHODS
Horizontal saccades were recorded using the IR and the SC. The IR allowed eye movement recordings at different sampling rates ranging from 250 Hz to 1000 Hz while the SC recorded at 1000 Hz.
RESULTS/CONCLUSIONS: The results show that the IR and the SC were in good agreement and produced similar results. In contrast to other studies, the influence of the sampling rate of the IR was small. The saccade main-sequences did not show significant differences. The latency times observed for both systems were mainly in the short-latency range.
目的
将一种新型基于视频的红外眼动仪（IR）的性能与磁搜索线圈技术（SC）进行比较。由于IR作为神经眼科诊断工具具有诸多有趣的可能性，因此研究了该新设备是否克服了以往IR系统所报告的缺点。
方法
使用IR和SC记录水平扫视。IR允许以250Hz至1000Hz的不同采样率记录眼动，而SC以1000Hz进行记录。
结果/结论：结果表明，IR和SC具有良好的一致性并产生相似的结果。与其他研究不同，IR采样率的影响较小。扫视主序列未显示出显著差异。两个系统观察到的潜伏期主要处于短潜伏期范围内。
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