I-Chieh Lee

Works (15)

Updated: April 5th, 2024 12:10

2023 article

Artificial intelligence meets medical robotics

Yip, M., Salcudean, S., Goldberg, K., Althoefer, K., Menciassi, A., Opfermann, J. D. D., … Lee, I.-C. (2023, July 14). SCIENCE, Vol. 381, pp. 141–146.

By: M. Yip *, S. Salcudean *, K. Goldberg *, K. Althoefer *, A. Menciassi *, J. Opfermann *, A. Krieger *, K. Swaminathan * ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023

2023 article

Development and Online Validation of an Intrinsic Fault Detector for a Powered Robotic Knee Prosthesis

2023 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, IROS, pp. 2158–2164.

By: A. Naseri n, M. Liu n, I. Lee n & H. Huang n 

TL;DR: This paper focuses on designing an active fault detector for a robotic knee prosthesis and demonstrates its effectiveness in real time, and expects that this detector can be integrated into a fault tolerance strategy to enhance the reliability and safety of robotic prosthetic legs, enabling users to perform their everyday tasks with greater confidence. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: March 4, 2024

2023 journal article

Harnessing Machine Learning and Physiological Knowledge for a Novel EMG-Based Neural-Machine Interface

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 70(4), 1125–1136.

By: J. Berman n, R. Hinson n, I. Lee n & H. Huang n 

Contributors: J. Berman n, R. Hinson n, I. Lee n & H. Huang n 

author keywords: Electromyography; Decoding; Solid modeling; Electrodes; Artificial neural networks; Muscles; Machine learning; Artificial neural network; electromyography (EMG); musculoskeletal model; neural machine interface; reinforcement learning
MeSH headings : Electromyography / methods; Hand / physiology; Upper Extremity; Posture; Machine Learning
TL;DR: Combining the concepts of machine learning and musculoskeletal modeling has resulted in a more robust joint kinematics decoder than either concept individually, which may result in a novel, highly reliable controller for powered prosthetic hands. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: March 15, 2023

2023 journal article

Investigating the Association of Quantitative Gait Stability Metrics With User Perception of Gait Interruption Due to Control Faults During Human-Prosthesis Interaction

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 31, 4693–4702.

By: A. Naseri n, I. Lee n, H. Huang n  & M. Liu n

author keywords: Gait stability measurements; internal disturbance in robotic prosthesis; powered knee prosthesis; individuals with transfemoral amputation; gait stability perception
TL;DR: The results showed that the center of pressure progression in the sagittal plane and knee momentum can potentially estimate the users’ perceptions of gait stability when experiencing disturbances, which can help improve the development and evaluation ofgait stability control algorithms in robotic prosthetic devices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: January 2, 2024

2023 journal article

Offline Evaluation Matters: Investigation of the Influence of Offline Performance of EMG-Based Neural-Machine Interfaces on User Adaptation, Cognitive Load, and Physical Efforts in a Real-Time Application

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 31, 3055–3063.

By: R. Hinson n, J. Berman n, I. Lee n, W. Filer * & H. Huang n 

author keywords: EMG decoding; neural machine interface; cognitive load; adaptation
TL;DR: The results imply that the offline performance of EMG-based NMIs provide important insight to users’ abilities to utilize them and should play an important role in research and development of novel NMI algorithms. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023

2022 journal article

A simplified model for whole-body angular momentum calculation

MEDICAL ENGINEERING & PHYSICS, 111.

By: M. Liu n, A. Naseri n, I. Lee n, X. Hu n, M. Lewek n & H. Huang n 

Contributors: M. Liu n, A. Naseri n, I. Lee n, X. Hu n, M. Lewek n & H. Huang n 

author keywords: Angular momentum; Gait stability; Wearable system; Rigid body model
MeSH headings : Humans; Biomechanical Phenomena; Gait; Lower Extremity; Amputation, Surgical; Motion
TL;DR: This study developed a simplified rigid body model by merging connected body segments to reduce the number of body segments, which need to be monitored, and demonstrated that the Lbody could be estimated by a seven-segment model accurately for both people with and without lower extremity amputation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 27, 2023

2022 journal article

Characterizing Prosthesis Control Fault During Human-Prosthesis Interactive Walking Using Intrinsic Sensors

IEEE ROBOTICS AND AUTOMATION LETTERS, 7(3), 8307–8314.

By: A. Naseri n, M. Liu n, I. Lee n, W. Liu n & H. Huang n 

Contributors: A. Naseri n, M. Liu n, I. Lee n, W. Liu n & H. Huang n 

author keywords: Prosthetics and exoskeletons; safety in HRI; failure detection and recovery; physical human-robot interaction
TL;DR: A procedure to study human-robot fault tolerance and inform the future design of robust prosthesis control is presented and the potential of using machine-learning-based schemes in identifying prostheses control faults based on intrinsic sensors on the prosthesis is demonstrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 29, 2022

2022 journal article

Human-prosthesis cooperation: combining adaptive prosthesis control with visual feedback guided gait

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 19(1).

By: B. Fylstra n, I. Lee n, M. Li  n, M. Lewek* & H. Huang n 

Contributors: B. Fylstra n, I. Lee n, M. Li  n, M. Lewek* & H. Huang n 

author keywords: Human-in-the-loop optimization; Transfemoral amputee; Powered prosthesis tuning; Visual feedback; Gait
MeSH headings : Humans; Feedback, Sensory; Gait; Artificial Limbs; Walking; Biomechanical Phenomena; Prosthesis Design; Amputees
TL;DR: Novel insights are provided on human-prosthesis interaction when cooperating in walking which may guide the future successful adoption of this paradigm in prosthesis control personalization or human-in-the-loop optimization to improve the prosthesis user’s gait performance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: January 3, 2023

2022 journal article

Is there a trade-off between economy and task goal variability in transfemoral amputee gait?

JOURNAL OF NEUROENGINEERING AND REHABILITATION, 19(1).

By: I. Lee n, B. Fylstra n, M. Liu n, T. Lenzi * & H. Huang n 

Contributors: I. Lee n, B. Fylstra n, M. Liu n, T. Lenzi * & H. Huang n 

author keywords: Mechanical energy; Goal equivalent manifold; Transfemoral amputee; Energy recovery rate; Walking
MeSH headings : Amputees; Artificial Limbs; Gait / physiology; Goals; Humans; Walking / physiology
TL;DR: This study investigated how unilateral transfemoral amputees regulate step and stride variability based on the task to achieve energy economy and found a negative relationship between energy recovery rate and non-goal-equivalent variability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: April 4, 2022

2022 journal article

Toward Safe Wearer-Prosthesis Interaction: Evaluation of Gait Stability and Human Compensation Strategy Under Faults in Robotic Transfemoral Prostheses

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 30, 2773–2782.

By: I. Lee n, M. Liu n, M. Lewek n, X. Hu n, W. Filer  n & H. Huang n 

Contributors: I. Lee n, M. Liu n, M. Lewek n, X. Hu n, W. Filer  n & H. Huang n 

author keywords: Prosthetics; Robots; Knee; Legged locomotion; IP networks; Impedance; Training; Gait stability; machine fault; powered knee prosthesis; transfemoral amputee; user-prosthesis interaction
MeSH headings : Amputees; Artificial Limbs; Biomechanical Phenomena; Gait; Humans; Prosthesis Design; Robotic Surgical Procedures; Robotics; Walking
TL;DR: The results showed that the error tolerable bound is dependent on the gait phase and the direction of torque change, and may assist the future design of an auto-tuning algorithm, volitionally-controlled powered prosthetic legs, and training of gait stability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 31, 2022

2021 article

Direct Myoelectric Control Modifies Lower Limb Functional Connectivity: A Case Study

2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC), pp. 6573–6576.

By: W. Liu*, A. Fleming*, I. Lee* & H. Huang* 

Contributors: W. Liu*, A. Fleming*, I. Lee* & H. Huang* 

MeSH headings : Amputees; Artificial Limbs; Electromyography; Humans; Lower Extremity; Muscle, Skeletal
TL;DR: This preliminary study applies functional connectivity analysis to an individual with unilateral lower-limb amputation during postural sway task and identifies a stronger connection between residual and intact below knee modules with improved bilateral symmetry after amputee acquired skills to better control the powered prosthetic ankle. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 7, 2022

2021 journal article

Multifractal roots of suprapostural dexterity

HUMAN MOVEMENT SCIENCE, 76.

By: D. Kelty-Stephen *, I. Lee n, N. Carver *, K. Newell * & M. Mangalam *

author keywords: Biotensegrity; Center of mass; Center of pressure; Fractal; Hurst exponent; Postural sway
MeSH headings : Adult; Algorithms; Biomechanical Phenomena; Female; Fractals; Humans; Male; Models, Statistical; Motor Skills; Nonlinear Dynamics; Postural Balance / physiology; Posture / physiology; Regression Analysis; Young Adult
TL;DR: Findings indicate that the balance of SD within stable bounds may depend on a tendency for temporal correlations to self-correct across time, and are interpreted as part of the growing evidence that multifractal nonlinearity is a modeling strategy that resonates strongly with ecological-psychological approaches to perception and action. (via Semantic Scholar)
Source: Web Of Science
Added: April 19, 2021

2020 journal article

Visual effort moderates postural cascade dynamics

NEUROSCIENCE LETTERS, 742.

By: M. Mangalam *, I. Lee n, K. Newell * & D. Kelty-Stephen *

author keywords: Center of pressure; Ergonomics; Inverse power law; Multiscale PDF; Postural control; Quiet stance
MeSH headings : Adolescent; Adult; Eye Movements / physiology; Female; Humans; Male; Photic Stimulation / methods; Postural Balance / physiology; Psychomotor Performance / physiology; Random Allocation; Visual Fields / physiology; Visual Perception / physiology; Young Adult
Source: Web Of Science
Added: February 8, 2021

2019 journal article

Postural coordination and control to the precision demands of light finger touch

EXPERIMENTAL BRAIN RESEARCH, 237(5), 1339–1346.

By: I. Lee n, M. Pacheco * & K. Newell *

author keywords: Light touch; Dual-task; Quiet standing; Correlation dimension; Wavelet analysis
MeSH headings : Adult; Biomechanical Phenomena; Female; Fingers; Humans; Male; Postural Balance / physiology; Posture / physiology; Touch Perception / physiology; Young Adult
TL;DR: The integrated nature of information availability, task requirements, and the emergent postural organization reflected in COP–COM coupling is pointed out. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: June 17, 2019

2019 journal article

The precision demands of viewing distance modulate postural coordination and control

HUMAN MOVEMENT SCIENCE, 66, 425–439.

By: I. Lee n, M. Pacheco * & K. Newell *

author keywords: Precision; Posture; Dynamical systems; Information
TL;DR: The findings show that the natural act of looking to the same feature in the environment as a function of visual viewing distance can lead to quantitative and qualitative changes in the dynamics of posture, consistent with the view that postural facilitation and information availability are integrated in the perceptual-motor dynamics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: September 3, 2019

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