My track has missed samples, even though my detection settings are fine
There are two possible causes for this problem:
There is more infomation being processed by EthoVision than your computer processor can cope with (especially if you have multiple arenas):
Do not have other programs running at the same time as EthoVision is acquiring data
Remember to also make sure that programs do not run in the background (look in the system tray at the bottom right of your screen)
Use tracking from video files, with Detection Determines Speed turned on.
If you are tracking live with NTSC, under some circumstances you will see that every 30 seconds or so a couple of 'extra' samples come in, which are dropped by EthoVision. You can see this clearly in the track editor (Acquisition menu) or raw data export file.
These samples will not significantly affect your dependant variable statistics
We have carried out extensive testing to be sure that the timing information is still good; experiment durations etc are still correct
If you want to stop this hapenig, you can first make video files and then track from those video files (with Detection Determines Speed turned on).