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. 2019 May 28;10:358. doi: 10.3389/fneur.2019.00358

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Copyright © 2019 Boukhvalova, Fan, Weideman, Harris, Kowalczyk, Pham, Kosa and Bielekova.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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MS test suite user-interface for Level Test. (A) This interface allows the operator to enter practice mode, switch users, access help tutorials, visualize a patient's trend with time, and submit feedback regarding application bugs. (B) The suite currently contains nine different tests, which can be accessed in Practice Mode (shown here) or Trial Mode. These tests refresh daily, and the clinician can change a patient's prescription to assign difficulty Levels 1 (easiest) −3 (most difficult) or to skip an appendage. (C) The Level Test interface displays a countdown and instructions on how to complete the test. The time remaining is displayed in a blue bar across the top of the screen. The user controls the red ball, which is randomly generated at a point 450 pixels (px) from the center of the screen. As the ball moves across the screen, the nearest concentric circle is highlighted in green. The goal of the test is to tilt the phone so that the red ball travels to and remains in the green center of the screen.