Accuracy and precision of visual stimulus timing in PsychoPy: no timing errors in standard usage.

Accuracy and precision of visual stimulus timing in PsychoPy: no timing errors in standard usage.
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DOI:
10.1371/journal.pone.0112033
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Vadillo MA
Vadillo MA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Garaizar P;Vadillo MA

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在最近发表在PLoS ONE上的一篇报告中,我们发现PsychoPy的性能在很短的时间间隔内就会下降,这表明它可能并不完全适合需要非常短的刺激的实验。本研究旨在提供最新版本的PsychoPy (v1.80)在不同硬件/软件条件下的最新性能评估。总的来说,结果表明,PsychoPy在呈现简短的视觉刺激时可以达到很高的精度和准确性。虽然在非常苛刻的基准测试中偶尔会发现计时错误,但没有理由认为它们会对研究人员开发的标准实验造成任何问题。
In a recent report published in PLoS ONE, we found that the performance of PsychoPy degraded with very short timing intervals, suggesting that it might not be perfectly suitable for experiments requiring the presentation of very brief stimuli. The present study aims to provide an updated performance assessment for the most recent version of PsychoPy (v1.80) under different hardware/software conditions. Overall, the results show that PsychoPy can achieve high levels of precision and accuracy in the presentation of brief visual stimuli. Although occasional timing errors were found in very demanding benchmarking tests, there is no reason to think that they can pose any problem for standard experiments developed by researchers.
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