Signal Propagation in Oblique Dendrites of CA1 Pyramidal Cells
نویسندگان
چکیده
منابع مشابه
Signal propagation in oblique dendrites of CA1 pyramidal cells.
The electrophysiological properties of the oblique branches of CA1 pyramidal neurons are largely unknown and very difficult to investigate experimentally. These relatively thin dendrites make up the majority of the apical tree surface area and constitute the main target of Schaffer collateral axons from CA3. Their electrogenic properties might have an important role in defining the computationa...
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Although radial oblique dendrites are a major synaptic input site in CA1 pyramidal neurons, little is known about their integrative properties. We have used multisite two-photon glutamate uncaging to deliver different spatiotemporal input patterns to single branches while simultaneously recording the uncaging-evoked excitatory postsynaptic potentials and local Ca2+ signals. Asynchronous input p...
متن کاملNormalization of Ca2+ signals by small oblique dendrites of CA1 pyramidal neurons.
Oblique dendrites of CA1 pyramidal neurons predominate in stratum radiatum and receive approximately 80% of the synaptic input from Schaffer collaterals. Despite this fact, most of our understanding of dendritic signal processing in these neurons comes from studies of the main apical dendrite. Using a combination of Ca2+ imaging and whole-cell recording techniques in rat hippocampal slices, we ...
متن کاملAssociative pairing enhances action potential back-propagation in radial oblique branches of CA1 pyramidal neurons.
Back-propagating action potentials (bAPs) are involved in associative synaptic plasticity and the modulation of dendritic excitability. We have used high-speed confocal and two-photon imaging to measure calcium and voltage signals associated with action potential propagation into oblique branches of CA1 pyramidal neurons in adult hippocampal slices. The spatial profile of the bAP-associated Ca(...
متن کاملDichotomy of action-potential backpropagation in CA1 pyramidal neuron dendrites.
In hippocampal CA1 pyramidal neurons, action potentials are typically initiated in the axon and backpropagate into the dendrites, shaping the integration of synaptic activity and influencing the induction of synaptic plasticity. Despite previous reports describing action-potential propagation in the proximal apical dendrites, the extent to which action potentials invade the distal dendrites of ...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2005
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00521.2005