Results 31 to 40 of about 872,130 (322)
Theta- and gamma-band oscillatory uncoupling in the macaque hippocampus
Nested hippocampal oscillations in the rodent give rise to temporal dynamics that may underlie learning, memory, and decision making. Although theta/gamma coupling in rodent CA1 occurs during exploration and sharp-wave ripples emerge in quiescence, it is
Saman Abbaspoor+2 more
doaj +1 more source
Coupled electrophysiological, hemodynamic, and cerebrospinal fluid oscillations in human sleep
Fluid dynamics during sleep During non–rapid eye movement sleep, low-frequency oscillations in neural activity support memory consolidation and neuronal computation.
Nina E. Fultz+6 more
semanticscholar +1 more source
Evidence has amassed from both animal intracranial recordings and human electrophysiology that neural oscillatory mechanisms play a critical role in a number of cognitive functions such as learning, memory, feature binding and sensory gating.
John J Foxe, John J Foxe, Adam C. Snyder
doaj +1 more source
Inhibition controls asynchronous states of neuronal networks
Computations in cortical circuits require action potentials from excitatory and inhibitory neurons. In this mini-review, I first provide a quick overview of findings that indicate that GABAergic neurons play a fundamental role in coordinating spikes and ...
Mario eTreviño
doaj +1 more source
To characterize information transfer in defined brain circuits involving multiple brain regions and to evaluate underlying molecular mechanisms and their dysregulation in major brain diseases, a simple and reliable system is ultimately required for ...
Oleg eSenkov+4 more
doaj +1 more source
High Gamma Power Is Phase-Locked to Theta Oscillations in Human Neocortex
We observed robust coupling between the high- and low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of
R. Canolty+8 more
semanticscholar +1 more source
Background: The temporal pattern of ventricular repolarization is of critical importance in arrhythmogenesis. Enhanced beat-to-beat variability (BBV) of ventricular action potential duration (APD) is pro-arrhythmic and is increased during sympathetic ...
Bradley Porter+11 more
doaj +1 more source
Quantum correlations for two coupled oscillators interacting with two heat baths [PDF]
We study a system of two coupled oscillators (the $A$ oscillator) each of the oscillators linearly interacts with its own heat bath consisting of a set of independent harmonic oscillators (the $B$ oscillators). The initial state of the $A$ oscillator is taken to be coherent while the $B$ oscillators are in thermal states.
arxiv +1 more source
Low-dimensional dynamics of phase oscillators driven by Cauchy noise [PDF]
Phase oscillator systems with global sine-coupling are known to exhibit low-dimensional dynamics. In this paper, such characteristics are extended to phase oscillator systems driven by Cauchy noise. The low-dimensional dynamics solution agreed well with the numerical simulations of noise-driven phase oscillators in the present study.
arxiv +1 more source
Mechanisms of gamma oscillations.
Gamma rhythms are commonly observed in many brain regions during both waking and sleep states, yet their functions and mechanisms remain a matter of debate.
G. Buzsáki, Xiao-Jing Wang
semanticscholar +1 more source