منابع مشابه
Spine plasticity in the motor cortex.
Dendritic spines are the postsynaptic sites of the majority of excitatory synapses in the mammalian central nervous system. The morphology and dynamics of dendritic spines change throughout the lifespan of animals, in response to novel experiences and neuropathologies. New spines form rapidly as animals learn new tasks or experience novel sensory stimulations. This is followed by a selective el...
متن کاملPlasticity and primary motor cortex.
One fundamental function of primary motor cortex (MI) is to control voluntary movements. Recent evidence suggests that this role emerges from distributed networks rather than discrete representations and that in adult mammals these networks are capable of modification. Neuronal recordings and activation patterns revealed with neuroimaging methods have shown considerable plasticity of MI represe...
متن کاملTransient spine expansion and learning-induced plasticity in layer 1 primary motor cortex.
Experience-dependent regulation of synaptic strength in the horizontal connections in layer 1 of the primary motor cortex is likely to play an important role in motor learning. Dendritic spines, the primary sites of excitatory synapses in the brain, are known to change shape in response to various experimental stimuli. We used a rat motor learning model to examine connection strength via field ...
متن کاملSkill-dependent Plasticity in Uninjured Motor Cortex
J Rehabil Med Suppl 41, 2003 DOI 10.1080/16501960310010070 It is now widely recognized that the cerebral cortex of adult human and non-human mammals is capable of widespread functional and structural plasticity. During the learning of new skills, cortical regions associated with sensorimotor function of the body parts most utilized for the skilled task come to be represented over larger cortica...
متن کاملTransient Neural Plasticity in Human Motor Cortex
INTRODUCTION: Brain’s plasticity forms the basis of many of our daily functions including memory and learning. It is then intuitive to speculate that certain changes have occurred to the brain comparing before and after the training/learning. However, the exact neuronal processes that are altered are poorly understood, especially for human studies in which available tools are limited. Recent st...
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ژورنال
عنوان ژورنال: Current Opinion in Neurobiology
سال: 2011
ISSN: 0959-4388
DOI: 10.1016/j.conb.2010.07.010