Results 51 to 60 of about 125,065 (291)
Cooperation and competition of gamma oscillation mechanisms [PDF]
Journal of Neurophysiology, 2016 Oscillations of neuronal activity in different frequency ranges are thought to reflect important aspects of cortical network dynamics. Here we investigate how various mechanisms that contribute to oscillations in neuronal networks may interact.
Viriyopase, A. +3 more
openaire +3 more sources
Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia [PDF]
, 2013 Current theories of the pathophysiology of schizophrenia have focused on abnormal temporal coordination of neural activity. Oscillations in the gamma-band range (>25 Hz) are of particular interest as they establish synchronization with great precision in
Christine eGruetzner +7 more
core +5 more sources
Autaptic connections and synaptic depression constrain and promote gamma oscillations.
PLoS ONE, 2014 Computational models of gamma oscillations have helped increase our understanding of the mechanisms that shape these 40-80 Hz cortical rhythms. Evidence suggests that interneurons known as basket cells are responsible for the generation of gamma ...
William M Connelly
doaj +1 more source
Hippocampal deletion of BDNF gene attenuates gamma oscillations in area CA1 by up-regulating 5-HT3 receptor. [PDF]
PLoS ONE, 2011 Pyramidal neurons in the hippocampal area CA3 express high levels of BDNF, but how this BDNF contributes to oscillatory properties of hippocampus is unknown.Here we examined carbachol-induced gamma oscillations in hippocampal slices lacking BDNF gene in ...
Ying Huang, Alexei Morozov
doaj +1 more source
, 2015 We consider a family of optimal control problems in the plane with dynamics and running costs possibly discontinuous across an oscillatory interface $\Gamma_\epsilon$.
Achdou, Yves +2 more
core +4 more sources
Ketamine Modulates Theta and Gamma Oscillations
Journal of Cognitive Neuroscience, 2010 Abstract Ketamine, an N-methyl-d-aspartate (NMDA) receptor glutamatergic antagonist, has been studied as a model of schizophrenia when applied in subanesthetic doses. In EEG studies, ketamine affects sensory gating and alters the oscillatory characteristics of neuronal signals in a complex manner.
Maciej T. Lazarewicz +5 more
openaire +4 more sources
Brain StimulationBackground: In Parkinson's disease, invasive brain recordings show that dopaminergic medication can induce narrowband gamma rhythms in the motor cortex and subthalamic nucleus, which co-fluctuate with dyskinesia scores. Deep brain stimulation can entrain
Maria Olaru +6 more
doaj +1 more source
In sync: gamma oscillations and emotional memory [PDF]
Frontiers in Behavioral Neuroscience, 2013 Emotional experiences leave vivid memories that can last a lifetime. The emotional facilitation of memory has been attributed to the engagement of diffusely projecting neuromodulatory systems that enhance the consolidation of synaptic plasticity in regions activated by the experience.
Headley, Drew B., Paré, Denis
openaire +3 more sources
PLoS ONE, 2023 Stimulus-induced narrow-band gamma oscillations (30-70 Hz) in human electro-encephalograph (EEG) have been linked to attentional and memory mechanisms and are abnormal in mental health conditions such as autism, schizophrenia and Alzheimer's Disease ...
Srividya Pattisapu, Supratim Ray
doaj +1 more source
PLoS ONE, 2011 BackgroundThe mammalian brain expresses a wide range of state-dependent network oscillations which vary in frequency and spatial extension. Such rhythms can entrain multiple neurons into coherent patterns of activity, consistent with a role in behaviour,
Claudia Scheffzük +5 more
doaj +1 more source