TY - Generic T1 - Toward improved surgical training: Delivering smoothness feedback using haptic cues T2 - Haptics Symposium (HAPTICS) Y1 - 2018 A1 - W. H. Jantscher A1 - S. Pandey A1 - P. Agarwal A1 - S. H. Richardson A1 - B. R. Lin A1 - M. D. Byrne A1 - M. K. O'Malley KW - biomechanics KW - biomedical education KW - computer based training KW - coordinated movement KW - delayed nature KW - dexterity KW - Feedback KW - frequency-domain measure KW - haptic cues KW - Haptic interfaces KW - Measurement KW - medical computing KW - mirror tracing task KW - mirror-tracing task KW - Mirrors KW - motor skill acquisition KW - movement smoothness KW - Navigation KW - qualitative nature KW - real-time feedback KW - skilled movement KW - smoothness-based feedback KW - spectral arc length KW - surgery KW - surgical training KW - Task analysis KW - training KW - vibrotactile cue AB -

Surgery is a challenging domain for motor skill acquisition, and compounding this difficulty is the often delayed and qualitative nature of feedback that is provided to trainees. In this paper, we explore the effectiveness of providing real-time feedback of movement smoothness, a characteristic associated with skilled and coordinated movement, via a vibrotactile cue. Subjects performed a mirror-tracing task that requires coordination and dexterity similar in nature to that required in endovascular surgery. Movement smoothness, measured by spectral arc length, a frequency-domain measure of movement smoothness, was encoded in a vibrotactile cue. Performance of the mirror tracing task with smoothness-based feedback was compared to position-based feedback (where the subject was alerted when they moved outside the path boundary) and to a no-feedback control condition. Although results of this pilot study failed to indicate a statistically significant effect of smoothness-based feedback on performance, subjects receiving smoothness-based feedback altered their task completion strategies to improve speed and accuracy, while those receiving position-based feedback or no feedback only improved in terms of increased accuracy. In tasks such as surgery where both speed and accuracy are vital to positive patient outcomes, the provision of smoothness-based feedback to the surgeon has the potential to positively influence performance.

JF - Haptics Symposium (HAPTICS) PB - IEEE CY - San Francisco, CA ER - TY - Generic T1 - Skill transfer in a simulated underactuated dynamic task T2 - Proceedings. RO-Man 2003. The 12th IEEE International Workshop on Robot and Human Interactive Communication (IEEE Cat. No. 03TH8711) Y1 - 2003 A1 - O'Malley, M.K. A1 - Abhishek Gupta KW - computer based training KW - Haptic interfaces KW - learning (artificial intelligence) KW - Virtual reality AB -

Machine-mediated teaching of dynamic task completion is typically implemented with passive intervention via virtual fixtures or active assist by means of record and replay strategies. During interaction with a real dynamic system however, the user relies on both visual and haptic feedback in order to elicit desired motions. This work investigates skill transfer from assisted to unassisted modes for a Fitts' type targeting task with an underactuated dynamic system. Performance, in terms of between target tap times, is measured during an unassisted baseline session and during various types of assisted training sessions. It is hypothesized that passive and active assist modes that are implemented during training of a dynamic task could improve skill transfer to a real environment or unassisted simulation of the task. Results indicate that transfer of skill is slight but significant for the assisted training modes

JF - Proceedings. RO-Man 2003. The 12th IEEE International Workshop on Robot and Human Interactive Communication (IEEE Cat. No. 03TH8711) CY - Millbrae, CA, USA UR - http://dx.doi.org/10.1109/ROMAN.2003.1251864 N1 -

underactuated dynamic system;Fitts' type;skill transfer;haptic feedback;

ER -