"The temporal modulation appeared as a spatial pattern known as a ‘phantom array’ during the saccade. The appearance of the pattern enabled the discrimination of flicker from steady light at frequencies that in 11 observers averaged 1.98 kHz."
I personally can see it at substantially higher frequencies. And note that displaying 2kHz flicker requires a 4kHz monitor.
https://journals.sagepub.com/doi/abs/10.1177/147715351243636...
"The temporal modulation appeared as a spatial pattern known as a ‘phantom array’ during the saccade. The appearance of the pattern enabled the discrimination of flicker from steady light at frequencies that in 11 observers averaged 1.98 kHz."
I personally can see it at substantially higher frequencies. And note that displaying 2kHz flicker requires a 4kHz monitor.