Hi,
I am also conducting research on the effect of High-Definition transcranial direct stimulation (HD-tDCS) on implicit motor sequence learning, via SRTT (serial reaction time task). 20 participants receive 30min stimulation, 20 receive 15min, and 20 are the control group (sham) and receive no stimulation.
In order to exclude the data of participants whose reaction times may have been affected by the stimulation (discomfort, itching, distraction, slight burning, etc.), participants must fill out an "unpleasantness" survey, consisting of several questions to their perceived unpleasantness.
My question is: How can I empirically/ statistically choose a cut-off value, in order to determine from which point on, data has to be excluded?
Thank you so much in advance for ideas and answers.
Kindly,
Ladina
I am also conducting research on the effect of High-Definition transcranial direct stimulation (HD-tDCS) on implicit motor sequence learning, via SRTT (serial reaction time task). 20 participants receive 30min stimulation, 20 receive 15min, and 20 are the control group (sham) and receive no stimulation.
In order to exclude the data of participants whose reaction times may have been affected by the stimulation (discomfort, itching, distraction, slight burning, etc.), participants must fill out an "unpleasantness" survey, consisting of several questions to their perceived unpleasantness.
My question is: How can I empirically/ statistically choose a cut-off value, in order to determine from which point on, data has to be excluded?
Thank you so much in advance for ideas and answers.
Kindly,
Ladina
