In vitro and in vivo examination of the spatial and temporal distribution of synaptic inputs and synaptic integration in layer 2/3 visual cortical neurons

Projektinformationen

VisualDendrite

ID Finanzhilfevereinbarung: 301362

Abgeschlossenes Projekt

Startdatum 22 Mai 2013

Enddatum 21 Mai 2015

Finanziert unter

• Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)

Gesamtkosten € 193 594,80

EU-Beitrag € 193 594,80

Koordiniert durch

INSTITUT PASTEUR
France

Ziel

A particularity of neurons in sensory cortex is to be tuned to specific stimulation features ; for example, in the primary visual cortex, some neurons are selective for the orientation of the stimulus. The large dendritic trees of pyramidal cortical neurons extend over hundreds of microns, allowing neurons to receive thousands of synaptic inputs. Neurons integrate and compute these inputs to produce an action potential output that will excite target cells. The dendritic tree likely serves as a substrate for these computations, through the interaction between synaptic inputs, the tree topology, and the distributions of intrinsic channels in dendrites. Elucidating the mechanisms by which dendrites implement these computations in response to functional stimuli is crucial to the understanding of how stimulus-specificity is performed in sensory neurons.
Thin dendrites are not accessible to patch-clamp, but two-photon microscopy allows the measurement of [Ca2+] and voltage fluctuations using fluorescent reporters.
We will investigate these questions in rat visual cortical neurons in vitro (in response to photoactivation of group of synapses), and in vivo (in response to visual stimulation), by measuring optically the dynamics of voltage and Ca2+ in single dendrites, in combination with somatic electrophysiological recordings and mathematical modeling of dendritic computations.

Wissenschaftliches Gebiet

• natural sciences › mathematics › pure mathematics › topology
• natural sciences › physical sciences › optics › microscopy
• natural sciences › mathematics › applied mathematics › mathematical model

Programm/Programme

• FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)

Thema/Themen

• FP7-PEOPLE-2011-IEF - Marie-Curie Action: "Intra-European fellowships for career development"

Aufforderung zur Vorschlagseinreichung

FP7-PEOPLE-2011-IEF
Andere Projekte für diesen Aufruf anzeigen

Finanzierungsplan

MC-IEF - Intra-European Fellowships (IEF)

Koordinator

INSTITUT PASTEUR

Kontakt Verwaltung

Marie-Laure Rosso (Dr.)

• EU-Beitrag: € 193 594,80
• Adresse: RUE DU DOCTEUR ROUX 25-28 ; 75724 Paris ; Frankreich
• Region: Ile-de-France › Ile-de-France › Paris
• Aktivitätstyp: Research Organisations
• Gesamtkosten: Keine Daten