Table 2 Participant's rating of the computer brain interface
Category | Question | Likert scale (Range: 1–5) Mean (SD) | |
|---|---|---|---|
Acceptance | The device is comfortable to wear | 3.6 (1.2) | 4.1 (0.9) |
The device sits well at the back of the head | 4.5 (0.67) | ||
The calibration process is effortless | 4.1 (0.7) | ||
Input / Output | The input delays were consistent | 3.7 (1.3) | 3.6 (1.2) |
The application followed my intentions | 4.1 (0.9) | ||
The application reacted quickly to inputs | 2.6 (1.0) | ||
Controlling the application was straightforward | 4.2 (1.0) | ||
User Study Task | The task was easy to understand | 4.6 (0.5) | 4.5 (0.7) |
I felt comfortable with the task | 4.2 (0.7) | ||
The path was well visible in the 3D model | 4.6 (0.7) | ||
Application | I had enough time to get familiar with the application | 4.8 (0.4) | 4.1 (1.2) |
The user interface is simple and comprehensive | 4.7 (0.6) | ||
The CT images are large enough | 4.9 (0.3) | ||
The 3D model in the application was useful | 3.5 (1.5) | ||
I think the 3D model in the application would be useful while surgery | 3.4 (1.5) | ||
The application allowed for fine grained adjustments | 3.5 (1.0) | ||
Overall Impressions | Overall device impression | 4.1 (0.8) | 3.8 (1.0) |
I would use the device in the operation room | 3.5 (1.1) | ||
I prefer this input method over the state-of-the art | 3.7 (1.0) | ||