Modularity in motor control: from muscle synergies to cognitive action representation [PDF]
Frontiers in Computational Neuroscience, 2015 Mastering a rich repertoire of motor behaviors, as humans and other animals do, is a surprising and still a poorly understood outcome of evolution, development, and learning.
Andrea ed'Avella +5 more
doaj +3 more sources
Generalized Pose Decoupled Network for Unsupervised 3D Skeleton Sequence-Based Action Representation Learning. [PDF]
Cyborg Bionic Syst, 2022 Human action representation is derived from the description of human shape and motion. The traditional unsupervised 3-dimensional (3D) human action representation learning method uses a recurrent neural network (RNN)-based autoencoder to reconstruct the ...
Liu M, Meng F, Liang Y.
europepmc +2 more sources
Self-Supervised Action Representation Learning Based on Asymmetric Skeleton Data Augmentation [PDF]
Sensors, 2022 Contrastive learning has received increasing attention in the field of skeleton-based action representations in recent years. Most contrastive learning methods use simple augmentation strategies to construct pairs of positive samples.
Hualing Zhou +5 more
doaj +2 more sources
Action representation in the mouse parieto-frontal network. [PDF]
Sci Rep, 2020 The posterior parietal cortex (PPC) and frontal motor areas comprise a cortical network supporting goal-directed behaviour, with functions including sensorimotor transformations and decision making.
Tombaz T +7 more
europepmc +2 more sources
Unsupervised Facial Action Representation Learning by Temporal Prediction [PDF]
Frontiers in Neurorobotics, 2022 Due to the cumbersome and expensive data collection process, facial action unit (AU) datasets are generally much smaller in scale than those in other computer vision fields, resulting in overfitting AU detection models trained on insufficient AU images ...
Chongwen Wang, Zicheng Wang
doaj +2 more sources
Unaware Processing of Tools in the Neural System for Object-Directed Action Representation. [PDF]
J Neurosci, 2017 The hypothesis that the brain constitutively encodes observed manipulable objects for the actions they afford is still debated. Yet, crucial evidence demonstrating that, even in the absence of perceptual awareness, the mere visual appearance of a ...
Tettamanti M +3 more
europepmc +2 more sources
Modeling the Maturation of Grip Selection Planning and Action Representation: Insights from Typical and Atypical Motor Development. [PDF]
Frontiers in Psychology, 2016 We investigated the purported association between developmental changes in grip selection planning and improvements in an individual’s capacity to represent action at an internal level (i.e., motor imagery).
Ian eFuelscher +4 more
doaj +2 more sources
A topographical organization for action representation in the human brain. [PDF]
Hum Brain Mapp, 2015 How the human brain represents distinct motor features into a unique finalized action still remains undefined. Previous models proposed the distinct features of a motor act to be hierarchically organized in separated, but functionally interconnected ...
Handjaras G +5 more
europepmc +2 more sources
Predicted action-effects shape action representation through pre-activation of alpha oscillations [PDF]
Communications BiologyActions are typically accompanied by sensory feedback (or action-effects). Action-effects, in turn, influence the action. Theoretical accounts of action control assume a pre-activation of action-effects prior to action execution.
Xin Wang +3 more
doaj +2 more sources
Action representation in patients with bilateral vestibular impairments. [PDF]
PLoS ONE, 2011 During mental actions subjects feel themselves performing a movement without any corresponding motor output. Although broad information is available regarding the influence of central lesions on action representation, little is known about how peripheral
Laurent Demougeot +3 more
doaj +2 more sources