I'm conducting research in musical psychophysics. I'm interested in prediction/expectation and am hoping to use max as a platform to do some reaction time measurements. The subject will hear the physical stimulus (a melodic contour) and register a response as to the direction of contour with a keypress ("up" "down" or "same"). Faster reaction time means faster neural processing means stronger expectation.
The USB keyboards seem to have a nontrivial (~15-50ms) latency due to the quantisation of the PC clock and built in keyboard delays. The problem is the jitter on this value. Is there a way within max, if not to remove key press latency altogether, to standardise the latency so that the total response time can be calibrated?
I've scoured the forums a bit to no avail. Also this paper reports a 1ms temporal precision with keypress detection in max but doesn't mention how this was achieved. -
We have access at the lab to all the standard psych response gadgets but they only seem to be compatible with matlab.
Thanks in advance -- Narayan