In vitro and in vivo examination of the spatial and temporal distribution of syn...
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
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...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
Proyectos interesantes
NeuroVision
The organisation of functional microcircuits in visual corte...
2M€
Cerrado
VESTIBCELLDYNAMICS
Voltage and calcium dynamics and synaptic transmission withi...
166K€
Cerrado
In vivo Plasticity
Neuronal circuits and synaptic mechanisms of experience depe...
100K€
Cerrado
CHANNELRHODOPSIN
Information processing in distal dendrites of neocortical la...
180K€
Cerrado
MEMORIES
Mapping dEndritic inforMation prOcessing in behaving mice us...
203K€
Cerrado
SINGLESITE
Pre and postsynaptic signaling at single synaptic contacts
2M€
Cerrado
Información proyecto VisualDendrite
Líder del proyecto
INSTITUT PASTEUR
No se ha especificado una descripción o un objeto social para esta compañía.
TRL
4-5
Presupuesto del proyecto
194K€
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
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.