منابع مشابه
Neural Population Dynamics during Reaching Are Better Explained by a Dynamical System than Representational Tuning
Recent models of movement generation in motor cortex have sought to explain neural activity not as a function of movement parameters, known as representational models, but as a dynamical system acting at the level of the population. Despite evidence supporting this framework, the evaluation of representational models and their integration with dynamical systems is incomplete in the literature. ...
متن کاملNeural Dynamics of Reaching following Incorrect or Absent Motor Preparation
Moving is thought to take separate preparation and execution steps. During preparation, neural activity in primary motor and dorsal premotor cortices achieves a state specific to an upcoming action but movements are not performed until the execution phase. We investigated whether this preparatory state (more precisely, prepare-and-hold state) is required for movement execution using two complem...
متن کاملMacroscopic Neural Oscillation during Skilled Reaching Movements in Humans
The neural mechanism of skilled movements, such as reaching, has been considered to differ from that of rhythmic movement such as locomotion. It is generally thought that skilled movements are consciously controlled by the brain, while rhythmic movements are usually controlled autonomously by the spinal cord and brain stem. However, several studies in recent decades have suggested that neural n...
متن کاملTitle : Neural Representation During Visually Guided Reaching 1 in
Title: Neural Representation During Visually Guided Reaching 1 in Macaque Posterior Parietal Cortex 2 3 4 5 Authors: Barbara Heider, Anushree Karnik, Nirmala Ramalingam and Ralph 6 M. Siegel 7 8 9 Affiliation: Center for Molecular and Behavioral Neuroscience 10 Rutgers University 11 Newark, New Jersey 07102 12 13 14 Running head: Properties of parietal neurons for reaching 15 16 17 Contact info...
متن کاملNeural models of reaching
Plamondon & Alimi (P&A) have unified much data on speed/accuracy trade-offs during reaching movements using a deltalognormal form factor that describes “the asymptotic behavior of a large number of dependent linear systems,” notably neuromuscular systems. Their approach raises questions about whether a large number of systems is needed, whether they are linear, and whether the results disclose ...
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ژورنال
عنوان ژورنال: Nature
سال: 2012
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature11129