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JNEUROSCI.3211-18.2019.pdf | 8.33 MB | Adobe PDF | 見る/開く |
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DCフィールド | 値 | 言語 |
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dc.contributor.author | Ohtsuki, Gen | en |
dc.contributor.alternative | 大槻, 元 | ja |
dc.date.accessioned | 2020-01-15T04:59:30Z | - |
dc.date.available | 2020-01-15T04:59:30Z | - |
dc.date.issued | 2020-01-08 | - |
dc.identifier.issn | 0270-6474 | - |
dc.identifier.issn | 1529-2401 | - |
dc.identifier.uri | http://hdl.handle.net/2433/245395 | - |
dc.description | 小脳神経細胞の樹状突起で新規の学習原理を発見 --小脳プルキンエ細胞の樹状突起では、樹状突起の興奮性が入力の伝搬を決める--. 京都大学プレスリリース. 2019-11-26. | ja |
dc.description | Dendrites filtering neuron's excitement. 京都大学プレスリリース. 2019-12-09. | en |
dc.description.abstract | The role of dendrites in the integration of widespread synaptic activity has been studied in experiments and theories (Johnston et al., 1996; Magee, 2007). However, whether the conduction of synaptic currents from dendrites to the soma depends on excitability of those dendritic branches is unclear. How modulation of the branch excitability affects the conduction of synaptic inputs and their selection on dendrites is also elusive. Here, I performed simultaneous voltage-clamp recordings from the soma and dendrites of single cerebellar Purkinje neurons in male Sprague-Dawley rats and analyzed the relationship between spontaneous excitatory postsynaptic currents (EPSCs) on both sides. I found that EPSCs on distal dendrites have a salient discordance in amplitude, compared to those on the soma. Furthermore, individual ratios of the EPSC concurrently recorded on the soma and dendrites were not unique, but discrete, suggesting the occurrence of various attenuations in different paths of dendritic branches to the soma. The obtained data and simulations indicate several distinct groups (4.5 ± 0.3, n = 22 somato-dendritic recordings) of co-occurred synaptic inputs in Purkinje cell dendrites. This clustering of synaptic currents was suggested to emerge at farther distances than the secondary bifurcations. Finally, ratios of the co-EPSCs were uniformly distributed after either intrinsic plasticity induction or SK-channel blockade. Overall, results suggest that in Purkinje cells the excitability along the dendrite processes modulates the conduction of EPSCs and makes active inputs heterogeneous through SK channel activity, intrinsic plasticity and dendritic branching. These properties of dendrites may confer branch-specific computational power to neurons. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Society for Neuroscience | en |
dc.rights | Copyright © 2020 Ohtsuki | en |
dc.rights | This is an open-access article distributed under the terms of the Creative Commons Attribution License Creative Commons Attribution 4.0 International, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. | en |
dc.subject | branch-specific clustering | en |
dc.subject | cerebellar Purkinje cells | en |
dc.subject | dendrites | en |
dc.subject | intrinsic plasticity | en |
dc.subject | SK channels | en |
dc.subject | synaptic currents | en |
dc.title | Modification of synaptic-input clustering by intrinsic excitability plasticity on cerebellar Purkinje cell dendrites | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Journal of Neuroscience | en |
dc.identifier.volume | 40 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 267 | - |
dc.identifier.epage | 282 | - |
dc.relation.doi | 10.1523/JNEUROSCI.3211-18.2019 | - |
dc.textversion | publisher | - |
dc.address | The Hakubi Center for Advanced Research, Kyoto University・Department of Biophysics, Kyoto University Graduate School of Science | en |
dc.identifier.pmid | 31754008 | - |
dc.relation.url | https://www.kyoto-u.ac.jp/ja/research-news/2019-11-26 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 26710002 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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