Touchscreen interface for reporting SCS evoked percepts
The RNEL-PerceptMapper is a simple multitouch interface that allows researchers to document the location and perceptual quality of sensations evoked via electrical stimulation of the nervous system. This GUI was developed at the University of Pittsburgh's Rehab Neural Engineering labs for studies focused on restoring sensation via spinal cord stimulation in upper and lower limb amputees.
For each repetition of stimulation, the subject can mark the location of the sensory percept with a free-hand drawing indicating the outline of the evoked percept on an image of the appropriate body segment, i.e., hand, arm, leg, sole etc. The percept quality can be recorded using several commonly used descriptors: touch, pressure, sharp, electrical, tickle, itch, pins and needles, movement, temperature, pain due to stimulation, phantom limb pain and can be modified to add custom descriptors. Each descriptor has an associated scale ranging from 0–10 to record the corresponding perceived intensity. This set of descriptors have been used previously to characterize evoked sensory percepts.
Working code is available on Github at the link
