Fig. 1

The Tongue-Trackpad and Visual Feedback Graphical User Interface. (A) The top image shows a size small (S) device with the diamond-shaped pads etched on the electronic board forming the active sensing area (shown in green). The device is hermetically sealed with thermoplastic. The bottom image shows the electronic board and a subject-specific impression of the upper teeth, acquired via the Bite Registration material. The personalized impression ensures a secure fit of the device to the teeth. (B) Customized graphical user interface displaying the exploration area of the device, the position of the center of the tongue tip contact is depicted by a 1-millimeter diameter dot. The cumulative history of the contacts is illustrated by previous dots, providing an overview of the path taken during exploration.