Publications


Autoencoder-based Approaches for Upper Limb Use Detection
Parvathy Neelakandan, Varadhan SKM, Sivakumar Balasubramanian
IEEE Access, 2025
Key Figure


Exploring Synergistic Patterns in Bimanual Distal Limb Movements Through Low Dimensional Representations
Prajwal Shenoy and Varadhan SKM
Scientific Reports, 2025
Key Figure


Underactuated Finger Design: A Minimalistic Approach Towards Biomimetic Prosthetic Finger
Vignesh Sompur, Varadhan SKM, and Asokan Thondiyath
IEEE Access, 2025
Key Figure


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
Key Figure


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
Key Figure


Comparable neural and behavioural performance in dominant and non-dominant hands during grasping tasks
Balasubramanian Eswari, Sivakumar Balasubramanian, and Varadhan SKM
Scientific Reports, 2025
Key Figure


Mission: Dexterous Functionality—Redesigning the Palmar Configuration Paradigm of Underactuated Prosthetic Hands
Sompur Vignesh, Varadhan SKM, and Asokan Thondiyath
Applied Sciences, 2025
Key Figure


Grasp context-dependent uncertainty alters the relative contribution of anticipatory and feedback-based mechanisms in object manipulation
Swarnab Dutta and Varadhan SKM
Neuropsychologia, 2024


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
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


Artificial hand for prosthetic applications
Vignesh Sompur, Asokan Thondiyath, Varadhan SKM
2023

    Patent Granted


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

    Patent Granted


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
Key Figure


Evidence to support the mechanical advantage hypothesis of grasping at low force levels
Rajakumar B and S.K.M. Varadhan
Scientific Reports, 2022
Key Figure


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


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
Key Figure


Datasets of fingertip forces while grasping a handle with unsteady thumb platform
Rajakumar B and S.K.M Varadhan
Scientific Data, 2022
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


Finger pressing task data collected with and without post-trial performance feedback
Balamurugan S and Varadhan SKM
Data in Brief, 2020
Key Figure


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
Key Figure


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
Key Figure


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
Key Figure


Age effects on rotational hand action
Varadhan SKM, Wei Zhang, Vladimir M. Zatsiorsky and Mark L. Latash
Human Movement Science, 2012
Key Figure


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
Key Figure


Variance components in discrete force production tasks
Varadhan SKM, Vladmir M. Zatsiorsky and Mark L. Latash
Experimental Brain Research, 2010
Key Figure


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
Key Figure


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
Key Figure