Niccolò Zampieri
@niccolozampieri.bsky.social
160 followers
180 following
9 posts
Group leader @ MDC
https://www.mdc-berlin.de/zampieri
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Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Rémi Ronzano
@remironzano.bsky.social
· Sep 2
Evidence of spinal cord comparator modules for rapid corrections of movements
Successful movement requires continuous adjustments in response to changes in internal and external environments. To do so, neural circuits continuously compare efference copies of motor commands with sensory input to respond to sensory prediction errors. Some responses need to be very fast and, for limbs, likely occur in as yet undefined spinal cord circuits. Here, we describe spinal circuits involving dI3 neurons, showing that they receive multimodal sensory inputs and direct efferent copies from both Renshaw cells and motor neurons. We further show that they form connections to motor pools, including diverging connections to antagonist motor nuclei. Reducing dI3 neuronal activity diminished stumbling responses, as did disrupting Renshaw cell circuits, providing evidence for a comparator role of dI3 neurons for online corrections. Together, our findings reveal a pivotal role for dI3 neurons functioning as comparators of internal predictions and external sensory feedback to mediate rapid corrections of ongoing movements. ### Competing Interest Statement Robert M. Brownstone is a co-founder and director of Sania Therapeutics Inc. Wellcome Trust, https://ror.org/029chgv08, 221610/Z/20/Z, 227433/Z/23/Z, 225674/Z/22/Z Royal Society, NIF\R1\192316 Canadian Institutes of Health Research, https://ror.org/01gavpb45, PJT 180556, PJT 162357 Biotechnology and Biological Sciences Research Council, BB/S005943/1
www.biorxiv.org
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
David Sussillo
@sussillodavid.bsky.social
· Jul 23
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Cell Reports
@cp-cellreports.bsky.social
· Jul 15
A vestibulospinal pathway for context-dependent motor control of the mouse tail
Lacava et al. characterize a descending vestibulospinal pathway originating from the spinal vestibular nucleus that targets spinal segments controlling tail muscles in mice. Activation of this pathway increases tail rotation during challenging balancing task.
dlvr.it
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Reposted by Niccolò Zampieri
Camilla Bellone
@bellonec.bsky.social
· Jul 11
Professeur-e ordinaire, professeur-e associé-e (6454)
Chaire d'excellence - développement, évolution moléculaire et cellulaire des circuits cérébraux // Full Professor or Associate Professor Chair of Excellence Development, Molecular and Cellula...
jobs.unige.ch
Reposted by Niccolò Zampieri
Development
@dev-journal.bsky.social
· Jul 9