Abstract
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.
Highlights
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 at providing an update of the performance of the more recent version of PsychoPy under ideal conditions
When we increased again the number of trials per loop in the 16.667 ms condition, we found again timing errors. This confirms that the timing errors that we found in PsychoPy so far should not be attributed to its ability to present very brief stimuli, but to the large number of trials per loop included in each test
Summary
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). The results show that PsychoPy can achieve high levels of precision and accuracy in the presentation of brief visual stimuli.
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