نتایج جستجو برای: dendritic structure

تعداد نتایج: 1615344  

Journal: :Journal of the Japan Institute of Metals and Materials 1966

Journal: :IOP conference series 2023

Abstract Dendritic deformation induced by convection of thermal fluid is one the factors leading to dendrite fragmentation and plays a crucial role in grain structure alloy, which lacks in-depth understanding. In this paper, we simulate flow-induced mechanical dendrites during solidification Al-4.5wt.%Cu alloy combining cellular automaton-finite volume method (CA-FVM) for growth finite element ...

Journal: :Acta neurobiologiae experimentalis 2008
Carlo Sala Ilaria Cambianica Francesca Rossi

The large majority of excitatory synapses are located on dendritic spines which are discrete membrane protrusions present on neuronal dendrites. Interestingly the highly heterogeneous morphology of dendritic spines is thought to be the morphological basis for synaptic plasticity associated to learning and memory formation. Indeed dendritic spines structure is regulated by molecular mechanisms t...

Journal: :Current Biology 2005
Ritsuko Fujii Shigeo Okabe Tomoe Urushido Kiyoshi Inoue Atsushi Yoshimura Taro Tachibana Toru Nishikawa Geoffrey G. Hicks Toru Takumi

Neuronal dendrites, together with dendritic spines, exhibit enormously diverse structure. Selective targeting and local translation of mRNAs in dendritic spines have been implicated in synapse remodeling or synaptic plasticity. The mechanism of mRNA transport to the postsynaptic site is a fundamental question in local dendritic translation. TLS (translocated in liposarcoma), previously identifi...

Journal: :Neuron 2014
Zuzana Šišková Daniel Justus Hiroshi Kaneko Detlef Friedrichs Niklas Henneberg Tatjana Beutel Julika Pitsch Susanne Schoch Albert Becker Heinz von der Kammer Stefan Remy

Dendritic structure critically determines the electrical properties of neurons and, thereby, defines the fundamental process of input-to-output conversion. The diversity of dendritic architectures enables neurons to fulfill their specialized circuit functions during cognitive processes. It is known that this dendritic integrity is impaired in patients with Alzheimer's disease and in relevant mo...

Journal: :Journal of neurophysiology 2016
Ying Zhu Fabrizio Gabbiani

Individual neurons in several sensory systems receive synaptic inputs organized according to subcellular topographic maps, yet the fine structure of this topographic organization and its relation to dendritic morphology have not been studied in detail. Subcellular topography is expected to play a role in dendritic integration, particularly when dendrites are extended and active. The lobula gian...

Journal: :Journal of neurophysiology 2009
Maurice Meseke Jan Felix Evers Carsten Duch

During nervous system development, different classes of neurons obtain different dendritic architectures, each of which receives a large number of input synapses. However, it is not clear whether synaptic inputs are targeted to specific regions within a dendritic tree and whether dendritic tree geometry and subdendritic synapse distributions might be optimized to support proper neuronal input-o...

Journal: :Journal of neurophysiology 2008
Quan Wen Dmitri B Chklovskii

Over hundreds of millions of years, evolution has optimized brain design to maximize its functionality while minimizing costs associated with building and maintenance. This observation suggests that one can use optimization theory to rationalize various features of brain design. Here, we attempt to explain the dimensions and branching structure of dendritic arbors by minimizing dendritic cost f...

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