Spatiotemporal dynamics of neuronal networks with synaptic depression. Spatially structured waves and oscillations in neuronal networks with synaptic depression and adaptation

Spatiotemporal dynamics of neuronal networks with synaptic depression. Spatially structured waves and oscillations in neuronal networks with synaptic depression and adaptation

Zachary Kilpatrick

     

бумажная книга



Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-3-6393-0948-5
Объём: 212 страниц
Масса: 344 г
Размеры(В x Ш x Т), см: 23 x 16 x 2

We analyze the spatiotemporal dynamics of systems of nonlocal integro–differential equations, which all represent neuronal networks with synaptic depression and spike frequency adaptation. These networks support a wide range of spatially structured waves, pulses, and oscillations, which are suggestive of phenomena seen in cortical slice experiments and in vivo. In an excitatory network with synaptic depression and adaptation, we study traveling waves, spiral waves, standing bumps, and synchronous oscillations. Analyzing standing bumps in the network with only depression, we find the stability of bumps is determined by the spectrum of a piecewise smooth operator. When the space–clamped network supports limit cycles, target wave emitting oscillating cores and spiral waves arise in the spatially-extended network. We then proceed to study binocular rivalry in a competitive neuronal network with synaptic depression. Rivalry arises as limit cycles in the space-clamped system and double bump instabilities in the spatially-extended system. Finally, we find inhomogeneities in the spatial connectivity of a neuronal network with adaptation can cause wave propagation failure.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

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