@article{bai_tacca_liu_buxton_lewek_feng_huang_2025, title={Evaluating Cognitive Workload With the Auditory Stroop Task While Using a Lower Limb Prosthesis: a Feasibility Study}, DOI={10.1109/ICORR66766.2025.11062936}, abstractNote={This study explored the feasibility of using the auditory Stroop task to assess cognitive workload in a dual-task paradigm. Performance on two tasks-counting backward by 3 and the auditory Stroop task-was measured across two conditions: participants' own passive device and a direct EMGcontrolled (dEMG) device. Results based on individual participants' data indicated that the auditory Stroop task effectively captured more consistent dual-task costs under cognitively demanding conditions, whereas the backward counting task exhibited minimal and less consistent performance deterioration. Participant interviews suggested that the backward counting task might be less sensitive to workload because participants could use strategies, while no strategies were reported for the auditory Stroop task. Although the findings are promising, this study was limited by a small sample size, which precluded statistical analysis. Future research should involve larger samples to confirm the auditory Stroop task's validity for measuring cognitive workload while using a lower limb prosthesis.}, journal={2025 INTERNATIONAL CONFERENCE ON REHABILITATION ROBOTICS, ICORR}, author={Bai, Xiaolu and Tacca, Joshua R. and Liu, Ming and Buxton, Elizabeth D. and Lewek, Michael D. and Feng, Jing and Huang, He Helen}, year={2025}, month={May}, pages={1227–1232} }
 @article{tacca_mituniewicz_driscoll_buxton_lewek_huang_2025, title={Guided Training with Visual Feedback can Improve Direct Electromyography Control of Prosthetic Ankles and Sit-to-Stand Performance: A Case Study}, url={http://dx.doi.org/10.1109/icorr66766.2025.11063161}, DOI={10.1109/ICORR66766.2025.11063161}, abstractNote={Direct electromyography (EMG)-controlled prostheses can allow people with amputation (PWA) to directly control their prosthetic ankle. This versatile control can assist with a variety of activities of daily life (ADL), including rising from and sitting down into a chair (i.e., sit-to-stand (S2S)). However, direct EMG control may be limited by a PWA's ability to activate their residual muscles. Physical therapy training with visual feedback may allow PWA to better utilize direct EMGcontrolled prostheses. One PWA (transtibial) completed four training sessions with physical therapy guidance and visual feedback of their dorsiflexor and plantarflexor EMG during S2S tasks using a direct EMG-controlled prosthesis. They returned two weeks after the fourth training session and repeated S2S tasks without physical therapist guidance or visual feedback. We found that as the training progressed, residual EMG activation became more similar to the intact limb and was retained when feedback was removed. We also found that S2S movement was smoother (less jerk) during the retention session compared to the first training session. Our results demonstrate the potential of physical therapy with visual feedback to improve PWA's utilization of direct EMG-controlled ankle prostheses and performance in tasks related to ADL.}, journal={2025 International Conference On Rehabilitation Robotics (ICORR)}, author={Tacca, Joshua R. and Mituniewicz, Austin L. and Driscoll, Brendan and Buxton, Elizabeth D. and Lewek, Michael D. and Huang, He Helen}, year={2025}, month={May}, pages={1524–1529} }