منابع مشابه
Neuronal synchrony measures
A neuronal synchrony measure is a number that quantifies the level of synchrony of a large population of neurons within a network. It is usually normalized to be between 0 and 1. It is equal to 0 when the neurons in the population fire in an asynchronized manner, it is equal to 1 when all those neurons fire in full synchrony, exactly at the same times, and it is between 0 and 1 for partially sy...
متن کاملAstrocytes orchestrate neuronal synchrony
Astrocytes orchestrate neuronal synchrony stroctyes are known to modulate synaptic communication between neurons. Now, colleagues report that astrocytes can elicit slow inward currents outside of synapses and thus activate synchronous responses in multiple neurons. During periods of intense neural activity, calcium oscillations are triggered in astrocytes, inducing the cells to release glutamat...
متن کاملNeuronal synchrony: peculiarity and generality.
Synchronization in neuronal systems is a new and intriguing application of dynamical systems theory. Why are neuronal systems different as a subject for synchronization? (1) Neurons in themselves are multidimensional nonlinear systems that are able to exhibit a wide variety of different activity patterns. Their "dynamical repertoire" includes regular or chaotic spiking, regular or chaotic burst...
متن کاملReading Neuronal Synchrony with Depressing Synapses
A recent experiment showed that neurons in the primary auditory cortex of the monkey do not change their mean firing rate during an ongoing tone stimulus. The only change was an enhanced correlation among the individual spike trains during the tone. We show that there is an easy way to extract this coherence information in the cortical cell population by projecting the spike trains through depr...
متن کاملNeuronal synchrony during anesthesia: a thalamocortical model.
There is growing evidence in favor of the temporal-coding hypothesis that temporal correlation of neuronal discharges may serve to bind distributed neuronal activity into unique representations and, in particular, that theta (3.5-7.5 Hz) and delta (0.5 < 3.5 Hz) oscillations facilitate information coding. The theta- and delta-rhythms are shown to be involved in various sleep stages, and during ...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2007
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.1347