Imperial College London
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Dr Shlomi Haar

Faculty of Medicine, Department of Brain Sciences

Edmond and Lily Safra Research Fellow and UK DRI Fellow
 
 
 
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Contact

 

s.haar Website

 
 
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Location

 

Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Haar:2017:10.1101/097824,
author = {Haar, S and Donchin, O and Dinstein, I},
doi = {10.1101/097824},
journal = {The Journal of Neuroscience},
pages = {9076--9085},
title = {Individual movement variability magnitudes are predicted by cortical neural variability},
url = {http://dx.doi.org/10.1101/097824},
volume = {37},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Humans exhibit considerable motor variability even across trivial reaching movements. This variability can be separated into specific kinematic components such as extent and direction that are thought to be governed by distinct neural processes. Here, we report that individual subjects (males and females) exhibit different magnitudes of kinematic variability, which are consistent (within individual) across movements to different targets and regardless of which arm (right or left) was used to perform the movements. Simultaneous fMRI recordings revealed that the same subjects also exhibited different magnitudes of fMRI variability across movements in a variety of motor system areas. These fMRI variability magnitudes were also consistent across movements to different targets when performed with either arm. Cortical fMRI variability in the posterior–parietal cortex of individual subjects explained their movement–extent variability. This relationship was apparent only in posterior-parietal cortex and not in other motor system areas, thereby suggesting that individuals with more variable movement preparation exhibit larger kinematic variability. We therefore propose that neural and kinematic variability are reliable and interrelated individual characteristics that may predispose individual subjects to exhibit distinct motor capabilities.
AU  - Haar,S
AU  - Donchin,O
AU  - Dinstein,I
DO  - 10.1101/097824
EP  - 9085
PY  - 2017///
SN  - 0270-6474
SP  - 9076
TI  - Individual movement variability magnitudes are predicted by cortical neural variability
T2  - The Journal of Neuroscience
UR  - http://dx.doi.org/10.1101/097824
UR  - https://www.jneurosci.org/content/37/37/9076
UR  - http://hdl.handle.net/10044/1/104609
VL  - 37
ER  -
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