Results 11 to 20 of about 54,149 (242)

The impact of tonic GABAA receptor-mediated inhibition on neuronal excitability varies across brain region and cell type

open access: yesFrontiers in Neural Circuits, 2014
The diversity of GABAA receptor (GABAAR) subunits and the numerous configurations during subunit assembly give rise to a variety of receptors with different functional properties. This heterogeneity results in variations in GABAergic conductances across
Vallent eLee, Jamie eMaguire
doaj   +3 more sources

Homeostatic competition between phasic and tonic inhibition. [PDF]

open access: yesJ Biol Chem, 2013
The GABAA receptors are the major inhibitory receptors in the brain and are localized at both synaptic and extrasynaptic membranes. Synaptic GABAA receptors mediate phasic inhibition, whereas extrasynaptic GABAA receptors mediate tonic inhibition. Both phasic and tonic inhibitions regulate neuronal activity, but whether they regulate each other is not ...
Wu X   +7 more
europepmc   +4 more sources

Subunit-specific mechanisms of isoflurane-induced acute tonic inhibition in dentate gyrus granule neuron [PDF]

open access: yesExperimental Biology and Medicine
Prolonged exposure to volatile anesthetics may raise the risk of developing cognitive impairment by acting on gamma-a Aminobutyric acid A receptors (GABAAR). The dentate gyrus plays an important role in the hippocampus and has a high potential for neural
Zhiqiang Yu   +4 more
doaj   +2 more sources

What roles do tonic inhibition and disinhibition play in the control of motor programs?

open access: yesFrontiers in Behavioral Neuroscience, 2010
Animals show periods of quiescence interspersed with periods of motor activity. In a number of invertebrate and vertebrate systems, quiescence is achieved by active suppression of motor behavior induced by sensory input or changes in internal state ...
Paul R Benjamin   +2 more
doaj   +3 more sources

Astrocytes convert network excitation to tonic inhibition of neurons [PDF]

open access: yesBMC Biology, 2012
Background Glutamate and γ-aminobutyric acid (GABA) transporters play important roles in balancing excitatory and inhibitory signals in the brain.
Héja László   +9 more
doaj   +4 more sources

GAT-3 Dysfunction Generates Tonic Inhibition in External Globus Pallidus Neurons in Parkinsonian Rodents

open access: yesCell Reports, 2018
Summary: The external globus pallidus (GP) is a key GABAergic hub in the basal ganglia (BG) circuitry, a neuronal network involved in motor control. In Parkinson’s disease (PD), the rate and pattern of activity of GP neurons are profoundly altered and ...
Marine Chazalon   +10 more
doaj   +3 more sources

NMDA receptor mediated tonic excitatory currents are elicited by EAAT inhibition on human neocortical pyramidal neurons [PDF]

open access: yesFrontiers in Synaptic Neuroscience
IntroductionAmbient glutamate is capable of regulating neural excitability and contributes to several brain pathologies. It is well established by experiments on rodent tissue that extrasynaptic glutamate –mainly regulated by astrocytic glutamate uptake-
Béla Márton   +8 more
doaj   +2 more sources

Brief Dark Exposure Reduces Tonic Inhibition in Visual Cortex. [PDF]

open access: yesJ Neurosci, 2015
Tonic inhibition mediated by extrasynaptic GABAAreceptors (GABARs) sensing ambient levels of GABA can profoundly alter the membrane input resistance to affect cellular excitability. Therefore, regulation of tonic inhibition is an attractive mechanism to control the levels of cortical firing. In cortical pyramidal cells, tonic inhibition is regulated by
Huang S   +4 more
europepmc   +4 more sources

GABA-mediated tonic inhibition differentially modulates gain in functional subtypes of cortical interneurons [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Robert Hatch   +2 more
exaly   +2 more sources

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