Zobrazeno 1 - 10
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pro vyhledávání: '"Dabaghian, Y"'
Recently discovered constituents of the brain waves -- the oscillons -- provide high-resolution representation of the extracellular field dynamics. Here we study the most robust, highest-amplitude oscillons that manifest in actively behaving rats and
Externí odkaz:
http://arxiv.org/abs/2404.13851
Alzheimer's disease (AD) is a complex neurodegenerative condition that manifests at multiple levels and involves a spectrum of abnormalities ranging from the cellular to cognitive. Here, we investigate the impact of AD-related tau-pathology on hippoc
Externí odkaz:
http://arxiv.org/abs/2403.15926
Autor:
Dabaghian, Y.
We propose a mechanism enabling the appearance of border cells -- neurons firing at the boundaries of the navigated enclosures. The approach is based on the recent discovery of discrete complex analysis on a triangular lattice, which allows construct
Externí odkaz:
http://arxiv.org/abs/2305.04165
Our current understanding of brain rhythms is based on quantifying their instantaneous or time-averaged characteristics. What remains unexplored, is the actual structure of the waves -- their shapes and patterns over finite timescales. To address thi
Externí odkaz:
http://arxiv.org/abs/2205.03503
Autor:
Dabaghian, Y.
In the mammalian brain, many neuronal ensembles are involved in representing spatial structure of the environment. In particular, there exist cells that encode the animal's location and cells that encode head direction. A number of studies have addre
Externí odkaz:
http://arxiv.org/abs/2108.03532
A common approach to interpreting spiking activity is based on identifying the firing fields---regions in physical or configuration spaces that elicit responses of neurons. Common examples include hippocampal place cells that fire at preferred locati
Externí odkaz:
http://arxiv.org/abs/2108.03518
Autor:
Dabaghian, Y.
Various neurophysiological and cognitive functions are based on transferring information between spiking neurons via a complex system of synaptic connections. In particular, the capacity of presynaptic inputs to influence the postsynaptic outputs---t
Externí odkaz:
http://arxiv.org/abs/1810.11769
It is widely accepted that the hippocampal place cells' spiking activity produces a cognitive map of space. However, many details of this representation's physiological mechanism remain unknown. For example, it is believed that the place cells exhibi
Externí odkaz:
http://arxiv.org/abs/1509.01677
We present exact, explicit, convergent periodic-orbit expansions for individual energy levels of regular quantum graphs. One simple application is the energy levels of a particle in a piecewise constant potential. Since the classical ray trajectories
Externí odkaz:
http://arxiv.org/abs/quant-ph/0110109
Publikováno v:
Phys. Rev. E {\bf 63}, 066201 (2001)
Based on quantum graph theory we establish that the ray-splitting trace formula proposed by Couchman {\it et al.} (Phys. Rev. A {\bf 46}, 6193 (1992)) is exact for a class of one-dimensional ray-splitting systems. Important applications in combinator
Externí odkaz:
http://arxiv.org/abs/quant-ph/0107094