Table 14.

Metrics of the target achievement test used by the nine HGR models.

Metric	Description
Throughput	Ratio between the index of difficulty and the movement time, which is the time (in seconds) [107].
Path Efficiency	Ratio between the straight line distance and the actual distance traveled [107,126].
Overshoot	Ratio between overshoots and number of targets. The ability to stop on a target [107,126].
Average Speed	Average nonzero speed of the cursor over the course of the trial [107,126].
Completion Rate	Ratio between the completed trials and the number of trials within the allowed time (i.e., trial time) [50,126].
Stopping Distance	Total distance traveled (path length) during the dwell time [108].
Completion Time	Time from movement initiation to the completion of the trial [31].
Real-time Accuracy	Ratio between correct predictions and number of predictions during the completion time [127].
Length Error	Ratio between distance beyond the total required distance, and the total required distance [31].
Reaction Time	Time from a target appearance and the first move of the cursor/virtual prosthesis [113].