Over and above frequency: Gamma oscillations as units of neural circuit operations

A Fernandez-Ruiz, A Sirota, V Lopes-dos-Santos… - Neuron, 2023 - cell.com
Summary Gamma oscillations (∼ 30–150 Hz) are widespread correlates of neural circuit
functions. These network activity patterns have been described across multiple animal …

Network abnormalities and interneuron dysfunction in Alzheimer disease

JJ Palop, L Mucke - Nature Reviews Neuroscience, 2016 - nature.com
The function of neural circuits and networks can be controlled, in part, by modulating the
synchrony of their components' activities. Network hypersynchrony and altered oscillatory …

Nucleus reuniens transiently synchronizes memory networks at beta frequencies

M Jayachandran, TD Viena, A Garcia, AV Veliz… - Nature …, 2023 - nature.com
Episodic memory-based decision-making requires top-down medial prefrontal cortex and
hippocampal interactions. This integrated prefrontal-hippocampal memory state is thought to …

Hippocampal sharp wave‐ripple: A cognitive biomarker for episodic memory and planning

G Buzsáki - Hippocampus, 2015 - Wiley Online Library
Sharp wave ripples (SPW‐Rs) represent the most synchronous population pattern in the
mammalian brain. Their excitatory output affects a wide area of the cortex and several …

Rhythms of the hippocampal network

LL Colgin - Nature Reviews Neuroscience, 2016 - nature.com
The hippocampal local field potential (LFP) shows three major types of rhythms: theta, sharp
wave–ripples and gamma. These rhythms are defined by their frequencies, they have …

Optogenetic gamma stimulation rescues memory impairments in an Alzheimer's disease mouse model

G Etter, S van der Veldt, F Manseau… - Nature …, 2019 - nature.com
Abstract Slow gamma oscillations (30–60 Hz) correlate with retrieval of spatial memory.
Altered slow gamma oscillations have been observed in Alzheimer's disease. Here, we use …

Hippocampal GABAergic inhibitory interneurons

KA Pelkey, R Chittajallu, MT Craig… - Physiological …, 2017 - journals.physiology.org
In the hippocampus GABAergic local circuit inhibitory interneurons represent only~ 10–15%
of the total neuronal population; however, their remarkable anatomical and physiological …

Brain oscillations and the importance of waveform shape

SR Cole, B Voytek - Trends in cognitive sciences, 2017 - cell.com
Oscillations are a prevalent feature of brain recordings. They are believed to play key roles
in neural communication and computation. Current analysis methods for studying neural …

The origin of extracellular fields and currents—EEG, ECoG, LFP and spikes

G Buzsáki, CA Anastassiou, C Koch - Nature reviews neuroscience, 2012 - nature.com
Neuronal activity in the brain gives rise to transmembrane currents that can be measured in
the extracellular medium. Although the major contributor of the extracellular signal is the …

[HTML][HTML] The theta-gamma neural code

JE Lisman, O Jensen - Neuron, 2013 - cell.com
Theta and gamma frequency oscillations occur in the same brain regions and interact with
each other, a process called cross-frequency coupling. Here, we review evidence for the …