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 - Robotic training and clinical assessment of forearm and wrist movements after incomplete spinal cord injury: A case study T2 - 2011 IEEE International Conference on Rehabilitation Robotics Y1 - 2011 A1 - N. Yozbatiran A1 - J. Berliner A1 - C. Boake A1 - M. K. O'Malley A1 - Z. Kadivar A1 - G. E. Francisco KW - age 24 yr KW - arm motor function recovery KW - ASIA upper-extremity motor score KW - biomechanics KW - clinical assessment KW - electrically-actuated forearm KW - Forearm KW - forearm movement KW - forearm pronation KW - forearm supination KW - functional independence measure KW - functional tasks KW - grip KW - Haptic interfaces KW - Humans KW - injuries KW - Jebsen-Taylor hand function test KW - Joints KW - Male KW - medical robotics KW - Medical treatment KW - Muscles KW - neurophysiology KW - patient movement capabilities KW - Patient rehabilitation KW - Patient treatment KW - pinch strength KW - radial-ulnar deviation KW - rehabilitation applications KW - robotic training KW - Robots KW - Spinal Cord Injuries KW - spinal cord injury KW - training KW - Wrist KW - wrist extension KW - wrist flexion KW - wrist haptic exoskeleton device KW - wrist movement KW - Young Adult AB -

The effectiveness of a robotic training device was evaluated in a 24-year-old male, cervical level four, ASIA Impairment Scale D injury. Robotic training of both upper extremities was provided for three hr/day for ten consecutive sessions using the RiceWrist, an electrically-actuated forearm and wrist haptic exoskeleton device that has been designed for rehabilitation applications. Training involved wrist flexion/extension, radial/ulnar deviation and forearm supination/pronation. Therapy sessions were tailored, based on the patient's movement capabilities for the wrist and forearm, progressed gradually by increasing number of repetitions and resistance. Outcome measures included the ASIA upper-extremity motor score, grip and pinch strength, the Jebsen-Taylor Hand Function test and the Functional Independence Measure. After the training, improvements were observed in pinch strength, and functional tasks. The data from one subject provides valuable information on the feasibility and effectiveness of robotic-assisted training of forearm and hand functions after incomplete spinal cord injury.

JF - 2011 IEEE International Conference on Rehabilitation Robotics ER -