Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching
Joint Authors
Brown, Emery N.
Putrino, David F.
Ghosh, Soumya
Chen, Zhe
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-09
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Neurons in the Primary Motor Cortex (MI) are known to form functional ensembles with one another in order to produce voluntary movement.
Neural network changes during skill learning are thought to be involved in improved fluency and accuracy of motor tasks.
Unforced errors during skilled tasks provide an avenue to study network connections related to motor learning.
In order to investigate network activity in MI, microwires were implanted in the MI of cats trained to perform a reaching task.
Spike trains from eight groups of simultaneously recorded cells (95 neurons in total) were acquired.
A point process generalized linear model (GLM) was developed to assess simultaneously recorded cells for functional connectivity during reaching attempts where unforced errors or no errors were made.
Whilst the same groups of neurons were often functionally connected regardless of trial success, functional connectivity between neurons was significantly different at fine time scales when the outcome of task performance changed.
Furthermore, connections were shown to be significantly more robust across multiple latencies during successful trials of task performance.
The results of this study indicate that reach-related neurons in MI form dynamic spiking dependencies whose temporal features are highly sensitive to unforced movement errors.
American Psychological Association (APA)
Putrino, David F.& Chen, Zhe& Ghosh, Soumya& Brown, Emery N.. 2011. Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching. Neural Plasticity،Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-470176
Modern Language Association (MLA)
Putrino, David F.…[et al.]. Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching. Neural Plasticity No. 2011 (2011), pp.1-15.
https://search.emarefa.net/detail/BIM-470176
American Medical Association (AMA)
Putrino, David F.& Chen, Zhe& Ghosh, Soumya& Brown, Emery N.. Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching. Neural Plasticity. 2011. Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-470176
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-470176