dc.contributor.author | Casas-Torremocha, Diana | |
dc.contributor.author | Porrero, César | |
dc.contributor.author | Rodriguez-Moreno, Javier | |
dc.contributor.author | García-Amado, María | |
dc.contributor.author | Lübke, Joachim H.R. | |
dc.contributor.author | Núñez Molina, Ángel | |
dc.contributor.author | Clascá, Francisco | |
dc.contributor.other | UAM. Departamento de Anatomía, Histología y Neurociencia | es_ES |
dc.date.accessioned | 2019-10-24T15:19:11Z | |
dc.date.available | 2019-10-24T15:19:11Z | |
dc.date.issued | 2019-03-27 | |
dc.identifier.citation | Brain Structure and Function 224.4 (2019):1627-1645 | en_US |
dc.identifier.issn | 1863-2653 (print) | es_ES |
dc.identifier.issn | 1863-2661 (online) | es_ES |
dc.identifier.uri | http://hdl.handle.net/10486/688975 | |
dc.description.abstract | Rodents extract information about nearby objects from the movement of their whiskers through dynamic computations that are carried out by a network of forebrain structures that includes the thalamus and the primary sensory (S1BF) and motor (M1wk) whisker cortices. The posterior nucleus (Po), a higher order thalamic nucleus, is a key hub of this network, receiving cortical and brainstem sensory inputs and innervating both motor and sensory whisker-related cortical areas. In a recent study in rats, we showed that Po inputs differently impact sensory processing in S1BF and M1wk. Here, in C57BL/6 mice, we measured Po synaptic bouton layer distribution and size, compared cortical unit response latencies to “in vivo” Po activation, and pharmacologically examined the glutamatergic receptor mechanisms involved. We found that, in S1BF, a large majority (56%) of Po axon varicosities are located in layer (L)5a and only 12% in L2–L4, whereas in M1wk this proportion is inverted to 18% and 55%, respectively. Light and electron microscopic measurements showed that Po synaptic boutons in M1wk layers 3–4 are significantly larger (~ 50%) than those in S1BF L5a. Electrical Po stimulation elicits different area-specific response patterns. In S1BF, responses show weak or no facilitation, and involve both ionotropic and metabotropic glutamate receptors, whereas in M1wk, unit responses exhibit facilitation to repetitive stimulation and involve ionotropic NMDA glutamate receptors. Because of the different laminar distribution of axon terminals, synaptic bouton size and receptor mechanisms, the impact of Po signals on M1wk and S1BF, although simultaneous, is likely to be markedly different. | en_US |
dc.description.sponsorship | This study was supported by European Union’s Horizon
2020 (Grant Agreement no. 785907 HBP SGA2) and Ministerio
de Economía y Competitividad/Fondo Europeo para el Desarrollo
Regional (MINECO/FEDER) Grant BFU2017-88549 to F.C., and
MINECO/FEDER Grant BFU2012-36107 to A.N. | en_US |
dc.format.extent | 19 pag. | es_ES |
dc.format.mimetype | application/pdf | en |
dc.language.iso | eng | en |
dc.publisher | Springer (part of Springer Nature) | en_US |
dc.relation.ispartof | Brain Structure and Function | en_US |
dc.rights | © 2019, The Author(s). | en_US |
dc.subject.other | Cerebral cortex | en_US |
dc.subject.other | Excitatory synaptic boutons | en_US |
dc.subject.other | Higher order thalamus | en_US |
dc.subject.other | Metabotropic receptors | en_US |
dc.subject.other | NMDA receptors | en_US |
dc.subject.other | Thalamocortical projections | en_US |
dc.title | Posterior thalamic nucleus axon terminals have different structure and functional impact in the motor and somatosensory vibrissal cortices | en_US |
dc.type | article | en |
dc.subject.eciencia | Medicina | es_ES |
dc.relation.publisherversion | https://doi.org/10.1007/s00429-019-01862-4 | es_ES |
dc.identifier.doi | 10.1007/s00429-019-01862-4 | es_ES |
dc.identifier.publicationfirstpage | 1627 | es_ES |
dc.identifier.publicationissue | 4 | es_ES |
dc.identifier.publicationlastpage | 1645 | es_ES |
dc.identifier.publicationvolume | 224 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/785907/EU//HBP SGA2 | es_ES |
dc.relation.projectID | Gobierno de España. BFU2017-88549 | es_ES |
dc.relation.projectID | Gobierno de España. BFU2012-36107 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | en |
dc.rights.cc | Reconocimiento | es_ES |
dc.rights.accessRights | openAccess | en |
dc.authorUAM | Casas Torremocha, Diana (281230) | |
dc.authorUAM | Clasca Cabre, Francisco (259664) | |
dc.authorUAM | Porrero Calzado, Cesar (261418) | |
dc.authorUAM | Rodríguez Moreno, Javier (262570) | |
dc.authorUAM | Núñez Molina, Ángel (259225) | |
dc.facultadUAM | Facultad de Medicina | |