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research article

The mouse motor system contains multiple premotor areas and partially follows human

Lazari, Alberto
•
Tachrount, Mohamed
•
Valverde, Juan Miguel
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May 28, 2024
Cell Reports

While humans are known to have several premotor cortical areas, secondary motor cortex (M2) is often considered to be the only higher -order motor area of the mouse brain and is thought to combine properties of various human premotor cortices. Here, we show that axonal tracer, functional connectivity, myelin mapping, gene expression, and optogenetics data contradict this notion. Our analyses reveal three premotor areas in the mouse, anterior -lateral motor cortex (ALM), anterior -lateral M2 (aM2), and posterior -medial M2 (pM2), with distinct structural, functional, and behavioral properties. By using the same techniques across mice and humans, we show that ALM has strikingly similar functional and microstructural properties to human anterior ventral premotor areas and that aM2 and pM2 amalgamate properties of human pre-SMA and cingulate cortex. These results provide evidence for the existence of multiple premotor areas in the mouse and chart a comparative map between the motor systems of humans and mice.

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Type
research article
DOI
10.1016/j.celrep.2024.114191
Web of Science ID

WOS:001240362800002

Author(s)
Lazari, Alberto
•
Tachrount, Mohamed
•
Valverde, Juan Miguel
•
Papp, Daniel
•
Beauchamp, Antoine
•
Mccarthy, Paul
•
Ellegood, Jacob
•
Grandjean, Joanes
•
Johansen-Berg, Heidi
•
Zerbi, Valerio  
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Date Issued

2024-05-28

Publisher

Cell Press

Published in
Cell Reports
Volume

43

Issue

5

Article Number

114191

Subjects

Life Sciences & Biomedicine

•

D Three Mouse Premotor Areas (Alm

•

Am2

•

Pm2) Have Distinct

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GR-ZERBI  
FunderGrant Number

WIN Seed Grant from the Wellcome Centre for Integrative Neuroimaging

EPA Cephalosporin Fund

Biotechnology and Biological Sciences Research Council

BB/N019814/1

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Available on Infoscience
July 3, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/208995
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