Manual JS configuration to capture onset times in exp output

Online experiments
18

Ah yep, that’s the problem then. Each time you use the addData method, you need to include both the variable you want to save, and a string indicating what you want to call it in the data file. At the moment you just have the former. So, it should look something like this:

psychoJS.experiment.addData("Img1", Img1.tStart);
psychoJS.experiment.addData("Img2", Img2.tStart);
psychoJS.experiment.addData("MaskImg", MaskImg.tStart);
psychoJS.experiment.addData("FixCross", FixCross.tStart);
psychoJS.experiment.addData("ResponseImg", ResponseImg.tStart);

You may want to play around with some different types of quotation marks if that exact code doesn’t work (I remember that being a problem earlier), but that’s the general idea.