Q5.3 Current Progress - TritonXR/Disorder GitHub Wiki

We have implemented 3/3 tests intended for analyzing Parkinson's patients: 1. Tremor Test, 2. Cutting Test, and 3. Water Test. All tests were developed to reflect measurements from the MDS-UPDRS, MDS-UDysRS, and SE-ADL exams.

In the Tremor Test, we use the position data generated from the user's controllers at 2 instructed positions to differentiate essential tremor vs. Parkinstonian tremor. At the first position, the user is instructed to hold out his/her arms parallel to the floor (active phase). At the second position, the user is asked to rest the controllers is his/her lap (resting phase). In patients with essential tremor, we expect tremors to be present mainly in the active phase. Meanwhile, we expect Parkinson's patients to be marked with tremor throughout both the active and resting phase.

In the Cutting Test, users are asked to cut various models of food. Since Parkinson's disease inhibits patients' control of movement and these patients typically move slower, we are interested in correlating time-of-task-completion to the severity of symptoms.

The third test, the Water Test, is a more quantitative version of an existing test for Dyskinesia in Parkinson's patients. Patients are asked to move a cup of water/coffee from one end of the table to the other. Meanwhile, the amount of "liquid" spilled will be quantified after the user sets the cup down.

For this test, we have divided the height of the liquid into 10 cylinders. Each cylinder has a specific angular threshold that will cause the topmost cylinder to disappear suprathreshold.