Publications

Identification of Patient-Specific EMG Detectors for Robot-Assisted Therapy Using Rest and Move State EMG Data
Monisha Yuvaraj, A T Prabakar, Varadhan SKM, Etienne Burdet, Ander Ramos-Murguialday, Sivakumar Balasubramanian
IEEE Access, 2025 (Accepted)


Influence of grasp context-dependent uncertainty on sensorimotor integration during object manipulation is independent of stimulus history
Swarnab Dutta and Varadhan SKM
Scientific Reports, 2025
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Autoencoder-based Approaches for Upper Limb Use Detection
Parvathy Neelakanan, Varadhan SKM, Sivakumar Balasubramanian
IEEE Access, 2025
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Exploring Synergistic Patterns in Bimanual Distal Limb Movements Through Low Dimensional Representations
Prajwal Shenoy and Varadhan SKM
Scientific Reports, 2025
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Underactuated Finger Design: A Minimalistic Approach Towards Biomimetic Prosthetic Finger
Vignesh Sompur, Varadhan SKM, and Asokan Thondiyath
IEEE Access, 2025
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Grasp-dependent modulations in EEG - EMG coherence are observed in young but not older adults
Balasubramanian Eswari, Sivakumar Balasubramanian, and Varadhan SKM
IEEE Transactions on Neural Systems & Rehabilitation Engineering, 2025
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Carpal tunnel release surgery restores force control but not force coordination in CTS patients
Thomas Jacob*, Mohamed Ibrahim B K, Vishnu Babu G, Shyamnath Krishna Pandian K, R Krishnamoorthy, G Karthikeyan, P Jeyakumar, V S Valarmathy, Jahir Hussain, C S Ezhilavan, K Sridhar, Sivakumar Balasubramanian, and Varadhan SKM
Scientific Reports, 2025
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Comparable neural and behavioural performance in dominant and non-dominant hands during grasping tasks
Balasubramanian Eswari, Sivakumar Balasubramanian, and Varadhan SKM
Scientific Reports, 2025
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Mission: Dexterous Functionality—Redesigning the Palmar Configuration Paradigm of Underactuated Prosthetic Hands
Sompur Vignesh, Varadhan SKM, and Asokan Thondiyath
Applied Sciences, 2025
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Grasp context-dependent uncertainty alters the relative contribution of anticipatory and feedback-based mechanisms in object manipulation
Swarnab Dutta and Varadhan SKM
Neuropsychologia, 2024
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Task demands modulate distal limb handedness: A comparative analysis of prehensile synergies of the dominant and non-dominant hand
Prajwal Shenoy and Varadhan SKM
Scientific Reports, 2024
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Older individuals do not show task specific variations in EEG band power and finger force coordination
Balasubramanian Eswari, Sivakumar Balasubramanian, and Varadhan SKM
IEEE Transactions on Biomedical Engineering, 2024
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A systematic investigation of detectors for low signal-to-noise ratio EMG signals
Yuvaraj M, Raja P, David A, Burdet E, S.K.M Varadhan, and Balasubramanian S
F1000Research, 2024
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Comparison of synergy patterns between the right and left hand while performing postures and object grasps
Shenoy P, Gupta A, and S.K.M. Varadhan
Scientific Reports, 2023
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How to train your posture: Haptic feedback can be used for postural adaptation of the trunk during upper-limb motor training
Agarwal R, Hussain A, Domenico C., and S.K.M Varadhan
IEEE Transactions on Haptics, 2023
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Artificial hand for prosthetic applications
Vignesh Sompur, Asokan Thondiyath, Varadhan SKM
Patent Granted, 2023


Posture correction system and method thereof
Rakhi Agarwal, Vignesh Sompur, Varadhan SKM, and Domenico Campolo
Patent Granted, 2023


Comparing algorithms for assessing upper limb use with inertial measurement units
Subash T, David A, Reeta Janet Surekha S, Gayathri S, Samuelkamaleshkumar S, Magimairaj HP, Malesevic N, Antfolk C, SKM Varadhan, Melendez-Calderon A, and Balasubramanian S
Frontiers in Physiology, 2022
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Evidence to support the mechanical advantage hypothesis of grasping at low force levels
Rajakumar B and S.K.M. Varadhan
Scientific Reports, 2022
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Let the Force Guide You: A Performance-Based Adaptive Algorithm for Postural Training using Haptic Feedback
Agarwal R, Hussain A, S.K.M Varadhan, and Domenico C
Frontiers in Human Neuroscience, 2022
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Inverse saxophone – a device to study the role of individual finger perturbations on grasp stability
Jacob T, Dutta S, Annamalai S J, and S.K.M Varadhan
Motor Control, 2022


Design and Validation of an IMU Based Full Hand Kinematic Measurement System
Shenoy P, Gupta A, and S.K.M Varadhan
IEEE Access, 2022
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Datasets of fingertip forces while grasping a handle with unsteady thumb platform
Rajakumar B and S.K.M Varadhan
Scientific Data, 2022
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Support for mechanical advantage hypothesis of grasping cannot be explained only by task mechanics
Rajakumar B, Dutta S, S.K.M Varadhan
Scientific Reports, 2022
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Methods for Measurement and Analysis of Full Hand Angular Kinematics Using Electromagnetic Tracking Sensors
Shenoy P, Sompur V, and S.K.M Varadhan
IEEE Access, 2022
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Role of post-trial visual feedback on unintentional force drift during isometric finger force production tasks
Balamurugan S, Dhanush R, Varadhan S.K.M
Motor Control, 2021


Distinct behavior of the little finger during the vertical translation of an unsteady thumb platform while grasping
Rajakumar B, Varadhan S.K.M
Scientific Reports, 2021
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A Framework for Sensor-Based Assessment of Upper-Limb Functioning in Hemiparesis
David A, Subash T, S.K.M Varadhan, Melendez-Calderon A, Balasubramanian S
Frontiers in Human Neuroscience, 2021
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Quantification of the relative arm use in patients with hemiparesis using inertial measurement units
David A, StephenSukumaran ReethaJanetSureka, Sankaralingam Gayathri, Salai Jeyseelan Annamalai, Selvaraj Samuelkamleshkumar, Anju Kuruvilla, Henry Prakash Magimairaj, SKM Varadhan, and Sivakumar Balasubramanian
Journal of Rehabilitation and Assistive Technologies Engineering, 2021
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Comparable behaviour of ring and little fingers due to an artificial reduction in thumb contribution to hold objects
Rajakumar B and Varadhan SKM
PeerJ, 2020
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Finger pressing task data collected with and without post-trial performance feedback
Balamurugan S and Varadhan SKM
Data in Brief, 2020
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Motor sequence learning data collected continuously for fifteen days of practice using a novel glove-based typing device
Dhanush Rachaveti and Varadhan SKM
Data in Brief, 2020
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Wrist Posture Does Not Influence Finger Interdependence
Niranjan Chakrabhavi and Varadhan SKM
Journal of Applied Biomechanics, 2019


Posture similarity index: a method to compare hand postures in synergy space
Bhatt, Nayan, and Varadhan Skm
PeerJ, 2018
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Thumbs up: movements made by the thumb are smoother and larger than fingers in finger-thumb opposition tasks
Rachaveti, Dhanush, Niranjan Chakrabhavi, Vaisakh Shankar, and Varadhan Skm
PeerJ, 2018
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Age effects on rotational hand action
Varadhan SKM, Wei Zhang, Vladimir M. Zatsiorsky and Mark L. Latash
Human Movement Science, 2012
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Adaptive increase in force variance during fatigue in tasks with low redundancy
Tarkeshwar Singh, Varadhan SKM, Vladmir M. Zatsiorsky and Mark L. Latash
Neuroscience Letters, 2010
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Variance components in discrete force production tasks
Varadhan SKM, Vladmir M. Zatsiorsky and Mark L. Latash
Experimental Brain Research, 2010
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Fatigue and motor redundancy: adaptive increase in finger force variance in multi-finger tasks
Tarkeshwar Singh, Varadhan SKM, Vladmir M. Zatsiorsky and Mark L. Latash
Journal of Neurophysiology, 2010
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The sources of two components of variance: An example of multifinger cyclic force production tasks at different frequencies
Jason Friedman, Varadhan SKM, Vladimir M. Zatsiorsky, Mark L. Latash
Experimental Brain Research, 2009
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