Is there a function or code to specify the amplitude and hertz of vibrating stimuli?
The task will run on tablets
E.g., two pairs of stimuli are presented. Participants are asked to place their left and right fingers on each image and need to decide which of the two images vibrated more. Each time a participant responds correctly, the vibration amplitude of stimuli increases by 2 amps.
You can read about vibration intensity and its problems here: