Results 361 to 370 of about 14,230,890 (402)
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The cost of an action potential
Journal of Neuroscience Methods, 2000Neuronal modules, or 'cell-assemblies', comprising millions of mutually interconnected cells have been postulated to form the basis of many functions of the brain, such as mood, sleep, hunger, vigilance, and more. Depending on the extent of the module, neurocommunication in cell-assemblies might exceed metabolic resources. A medium-size (10000 neurons)
Paul Bach-y-Rita, Gaetano L. Aiello
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2015
In this chapter we meet the action potential, the fundamental electrical signalling mechanism used by the body. We introduce the cycle of ion movements associated with the generation of an action potential and the role of different ion gates. We then analyse the system of action potential generation in terms of a simple electrical circuit model.
Michael A. Chappell, Stephen J. Payne
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In this chapter we meet the action potential, the fundamental electrical signalling mechanism used by the body. We introduce the cycle of ion movements associated with the generation of an action potential and the role of different ion gates. We then analyse the system of action potential generation in terms of a simple electrical circuit model.
Michael A. Chappell, Stephen J. Payne
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Synchronous bursts of action potentials in ganglion cells of the developing mammalian retina.
Science, 1991The development of orderly connections in the mammalian visual system depends on action potentials in the optic nerve fibers, even before the retina receives visual input.
M. Meister, R. Wong, D. Baylor, C. Shatz
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Potentiation of Epinephrine Action
Nature, 1961THE following experimental results have been reported by our colleagues on the potentiation of epinephrine action by various substances, clarifying part of its mechanism : (1) The potentiation of epinephrine action on vasoconstriction by certain amino-acids was attributed to a reaction in which the oxidized form of epinephrine gave rise to the ...
M. Oka, Yukari Hashimoto, Reiji Imaizumi
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Journal of Neurophysiology, 2011
We employed a novel action potential detection and classification technique to study the relationship between the recruitment of sympathetic action potentials (i.e., neurons) and the size of integrated sympathetic bursts in human muscle sympathetic nerve
A. Salmanpour +5 more
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We employed a novel action potential detection and classification technique to study the relationship between the recruitment of sympathetic action potentials (i.e., neurons) and the size of integrated sympathetic bursts in human muscle sympathetic nerve
A. Salmanpour +5 more
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Neurobiology of Learning and Memory, 2000
Neurons compute in part by integrating, on a time scale of milliseconds, many synaptic inputs and generating a digital output-the "action potential" of classic electrophysiology. Recent discoveries indicate that neurons also perform a second, much slower, integration operating on a time scale of minutes or even hours.
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Neurons compute in part by integrating, on a time scale of milliseconds, many synaptic inputs and generating a digital output-the "action potential" of classic electrophysiology. Recent discoveries indicate that neurons also perform a second, much slower, integration operating on a time scale of minutes or even hours.
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Imaging action potentials with calcium indicators.
Cold Spring Harbor Protocols, 2009The understanding of neuronal circuits has been, and will continue to be, greatly advanced by the simultaneous imaging of action potentials in neuronal ensembles.
J. MacLean, R. Yuste
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2012
This chapter begins with a discussion of the motor neuron as a classic example of excitable cells that use action potentials. It shows how outward currents hyperpolarize the cell in predictable ways, but that inward currents depolarize excitable cells until they reach threshold, at which time a new phenomenon, the action potential, occurs. It describes
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This chapter begins with a discussion of the motor neuron as a classic example of excitable cells that use action potentials. It shows how outward currents hyperpolarize the cell in predictable ways, but that inward currents depolarize excitable cells until they reach threshold, at which time a new phenomenon, the action potential, occurs. It describes
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Action potential: generation and propagation
Anaesthesia & Intensive Care Medicine, 2008Abstract In the normal resting state, the plasma membrane of nerve and muscle cells generates a transmembrane electrical potential difference – the intracellular surface of the membrane being approximately 70–80 millivolts (mV) negative to the extracellular surface.
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Propagation of action potentials in dendrites depends on dendritic morphology.
Journal of Neurophysiology, 2001Action potential propagation links information processing in different regions of the dendritic tree. To examine the contribution of dendritic morphology to the efficacy of propagation, simulations were performed in detailed reconstructions of eight ...
A. Roth, M. Häusser
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