ArticleScientific reports2018
Complex Upper-Limb Movements Are Generated by Combining Motor Primitives that Scale with the Movement Size.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- Spatiotemporal dynamics and substates underlie emotional signalling in facial movements.Scientific reports · 2026Article
- Advancing Wearable-Based Upper-Limb Stroke Recovery Assessment to the Clinic: A Comparison of Movement Segmentation Strategies.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026Article
- Reconstructing hand gestures with synergies extracted from dance movements.Scientific reports · 2025Article
- Submovements Derived from Wearable Sensors Capture Ataxia Severity and Differ Across Motor Tasks and Directions of Motion.Cerebellum (London, England) · 2025Article
- Effective training procedure for a simultaneous bimanual movement task in head-fixed mice.Frontiers in neural circuits · 2025Article
- Estimation of ataxia severity in children with ataxia-telangiectasia using ankle-worn sensors.Journal of neurology · 2023Article
- The impact of intrinsic muscle properties on simulated reaching performance.Computer methods in biomechanics and biomedical engineering · 2023Article
- A non-expensive bidimensional assessment can detect subtle alterations in gait performance in people in the early stages of Parkinson's disease.Frontiers in neurology · 2023Article
- A non-expensive bidimensional kinematic balance assessment can detect early postural instability in people with Parkinson's disease.Frontiers in neurology · 2023Article
- Understanding voluntary human movement variability through data-driven segmentation and clustering.Frontiers in human neuroscience · 2023Article
- A Kinematic Data-Driven Approach to Differentiate Involuntary Choreic Movements in Individuals With Neurological Conditions.IEEE transactions on bio-medical engineering · 2022Article
- A unified scheme for the benchmarking of upper limb functions in neurological disorders.Journal of neuroengineering and rehabilitation · 2022Article
- Decomposition of Reaching Movements Enables Detection and Measurement of Ataxia.Cerebellum (London, England) · 2021Article
- Predicting and Monitoring Upper-Limb Rehabilitation Outcomes Using Clinical and Wearable Sensor Data in Brain Injury Survivors.IEEE transactions on bio-medical engineering · 2021Article
- Application of Image Registration to Analyze the Clavicular Rotation of Normal Upper Limb Motion in the Sagittal Plane.Orthopaedic surgery · 2021Article
- Analysis of Visuo Motor Control between Dominant Hand and Non-Dominant Hand for Effective Human-Robot Collaboration.Sensors (Basel, Switzerland) · 2020Article
- Enabling precision rehabilitation interventions using wearable sensors and machine learning to track motor recovery.NPJ digital medicine · 2020Article
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Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The hand trajectory of motion during the performance of one-dimensional point-to-point movements has been shown to be marked by motor primitives with a bell-shaped velocity profile. Researchers have investigated if motor primitives with the same shape mark also complex upper-limb movements. They have done so by analyzing the magnitude of the hand trajectory velocity vector. This approach has failed to identify motor primitives with a bell-shaped velocity profile as the basic elements underlying the generation of complex upper-limb movements. In this study, we examined upper-limb movements by analyzing instead the movement components defined according to a Cartesian coordinate system with axes oriented in the medio-lateral, antero-posterior, and vertical directions. To our surprise, we found out that a broad set of complex upper-limb movements can be modeled as a combination of motor primitives with a bell-shaped velocity profile defined according to the axes of the above-defined coordinate system. Most notably, we discovered that these motor primitives scale with the size of movement according to a power law. These results provide a novel key to the interpretation of brain and muscle synergy studies suggesting that human subjects use a scale-invariant encoding of movement patterns when performing upper-limb movements.
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