ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2014
Dense distributed processing in a hindlimb scratch motor network.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- Neurotransmitters and Motoneuron Contacts of Multifunctional and Behaviorally Specialized Turtle Spinal Cord Interneurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020Article
- Central pattern generators in the turtle spinal cord: selection among the forms of motor behaviors.Journal of neurophysiology · 2018Review
- The Spinal Neurons Exhibit an ON-OFF and OFF-ON Firing Activity Around the Onset of Fictive Scratching Episodes in the Cat.Frontiers in cellular neuroscience · 2018Article
- Spike threshold dynamics in spinal motoneurons during scratching and swimming.The Journal of physiology · 2017Article
- Spinal control of motor outputs by intrinsic and externally induced electric field potentials.Journal of neurophysiology · 2017Review
- Spinal Cord Preparation from Adult Red-eared Turtles for Electrophysiological Recordings during Motor Activity.Bio-protocol · 2017Article
- Motor control ofeLife · 2017Article
- Irregular Firing and High-Conductance States in Spinal Motoneurons during Scratching and Swimming.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016Article
- Origin of thoracic spinal network activity during locomotor-like activity in the neonatal rat.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015Article
- Divisive gain modulation of motoneurons by inhibition optimizes muscular control.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015Article
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In reduced preparations, hindlimb movements can be generated by a minimal network of neurons in the limb innervating spinal segments. The network of neurons that generates real movements is less well delineated. In an ex vivo carapace-spinal cord preparation from adult turtles (Trachemys scripta elegans), we show that ventral horn interneurons in mid-thoracic spinal segments are functionally integrated in the hindlimb scratch network. First, mid-thoracic interneurons receive intense synaptic input during scratching and behave like neurons in the hindlimb enlargement. Second, some mid-thoracic interneurons activated during scratching project descending axons toward the hindlimb enlargement. Third, elimination of mid-thoracic segments leads to a weakening of scratch rhythmicity. We conclude that densely innervated interneurons in mid-thoracic segments contribute to hindlimb scratching and may be part of a distributed motor network that secures motor coherence.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.