Sampling frequency and eye-tracking measures: how speed affects durations, latencies, and more
Sampling frequency and eye-tracking measures: how speed affects durations, latencies, and more
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采样频率和眼动追踪测量：速度如何影响持续时间、延迟等
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
K. Holmqvist
中科院分区：
文献类型：
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作者：
Richard Andersson;M. Nyström;K. Holmqvist
通过仿真研究了眼动跟踪中采样频率对常见因变量的影响。我们确定了两大类行为不同但一致的措施。研究了采样频率对这两组测量的影响，并进行了模拟，以估计需要多少数据来克服有限采样频率的不确定性。模拟数据和实际数据都被用来估计低采样频率产生的数据的时间不确定性。其目的是为使用眼动追踪的研究人员提供易于使用的启发式方法。例如，我们展示了如何用更多的数据和实验后的测量调整来补偿低采样频率的不确定性。这些发现主要对使用自然采样频率通常较低的设置的研究人员有影响。
We use simulations to investigate the effect of sampling frequency on common dependent variables in eye-tracking. We identify two large groups of measures that behave differently, but consistently. The effect of sampling frequency on these two groups of measures are explored and simulations are performed to estimate how much data are required to overcome the uncertainty of a limited sampling frequency. Both simulated and real data are used to estimate the temporal uncertainty of data produced by low sampling frequencies. The aim is to provide easy-to-use heuristics for researchers using eye-tracking. For example, we show how to compensate the uncertainty of a low sampling frequency with more data and postexperiment adjustments of measures. These findings have implications primarily for researchers using naturalistic setups where sampling frequencies typically are low.
影响因子：
1.8
作者：
Kagan, Igor;Gur, Moshe;Snodderly, D. Max
通讯作者：
Snodderly, D. Max