About this Research Topic
When a hand is paralyzed by a spinal cord injury, the ipsilateral motor cortex immediately takes its control by reactivating its pre-existing neural pathway, which is normally suppressed and preserved in the course of development. The classical theory of adaptation supposes that adaptation is the process of updating parameters gradually with practice to reduce prediction errors of the sensory outcome. However, the human brain sometimes shows abrupt changes in behaviors and corresponding neural networks when confronted with severe damage to the body and the brain. Here, we focus on redundancy musculoskeletal and nervous systems and seek a principle for the brain to reorganize functional and computational connectivity to restructure sensorimotor maps and action selection rules.
We define Hyper-adaptability as the ability of the central nervous system (brain and spinal cord) to manage impairments of the sensory, motor, and cognitive functions, including those related to aging, by reactivating and recruiting pre-existing, latent but available networks that are implemented by new computational principles and practical functions. One of the essential elements of the Hyper-adaptability is to reconstruct the neural structure to compensate for the loss of neural function due to brain damage. Once the brain has rebuilt and engaged the new neural networks, the brain must also establish rules on how to use this network to generate ideal motor behaviors. In other words, reconstituting the sensorimotor control rule is also necessary for Hyper-adaptability. Thus, to understand hyper-adaptability, theoretical studies on how networks and functions need to be reconstructed must be integrated with empirical studies on how neural connectivity is reorganized and how this reorganization changes behaviors. The goal of this Research Topic is to gain insight into the neural and theoretical background of Hyper-adaptability by collecting recent outcomes of studies from broad scientific fields.
This Research Topic focuses on computational, behavioral, and neurophysiological studies regarding exceptional adaptation abilities in motor control, motor recovery, and perception. We seek Original Research, Review, Mini-Review, Hypothesis and Theory, Perspective, Clinical Trial, and Opinion articles that cover, but are not limited to, the following topics:
•Reconstruction of the bio-structure and challenges for preventing the decline of latent adaptive capacity
•Neural mechanisms of super-adaptation to body change
•Mechanisms of body cognition and emotion
•Alteration of brain dynamics as underlying mechanisms of hyper-adaptability
• Systems modeling hyper-adaptation mechanism for the reconstruction of neural structure
•Modeling ultra-adaptation to body changes
•Systematic understanding and realization of hyper-adaptive phenomena focusing on cognition and emotion
•Modelling hyper-adaptability in human postural control considering the role of neurotransmitters
Keywords: Motor Adaptation, Muscle Synergy, Postural Control, Body Agency
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