Results 41 to 50 of about 31,377 (262)

Hippocampal deletion of BDNF gene attenuates gamma oscillations in area CA1 by up-regulating 5-HT3 receptor. [PDF]

open access: yesPLoS 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

Deep brain stimulation-entrained gamma oscillations in chronic home recordings in Parkinson's disease

open access: yesBrain Stimulation
Background: 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

Stimulus-induced narrow-band gamma oscillations in humans can be recorded using open-hardware low-cost EEG amplifier.

open access: yesPLoS 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

Selective coupling between theta phase and neocortical fast gamma oscillations during REM-sleep in mice.

open access: yesPLoS 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

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Effect of low-intensity transcranial ultrasound stimulation on theta and gamma oscillations in the mouse hippocampal CA1

open access: yesFrontiers in Psychiatry, 2023
Previous studies have demonstrated that low-intensity transcranial ultrasound stimulation (TUS) can eliminate hippocampal neural activity. However, until now, it has remained unclear how ultrasound modulates theta and gamma oscillations in the ...
Zhen Li   +4 more
doaj   +1 more source

A coupled-oscillator model of olfactory bulb gamma oscillations

open access: yesPLOS Computational Biology, 2017
The olfactory bulb transforms not only the information content of the primary sensory representation, but also its underlying coding metric. High-variance, slow-timescale primary odor representations are transformed by bulbar circuitry into secondary representations based on principal neuron spike patterns that are tightly regulated in time.
Li, Guoshi, Cleland, Thomas A.
openaire   +4 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Rhythmic light flicker rescues hippocampal low gamma and protects ischemic neurons by enhancing presynaptic plasticity

open access: yesNature Communications, 2020
Brain ischemia has been associated with deficits in neural oscillations. Here in an animal model, the authors show that modulation of low-gamma oscillations using a light flicker can restore low gamma oscillations and protect ischemic neurons.
Lifeng Zheng   +9 more
doaj   +1 more source

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