Phase-locking of hippocampal theta and gamma waves has been proposed to support memory formation, but an analysis using robust statistical methods finds no convincing evidence for the phenomenon.
Daniel R Schonhaut, Aditya M Rao ... Michael J Kahana
Neural spiking throughout the MTL is synchronous with hippocampal theta phase during spatial memory and navigation experiments in humans, even after controlling for phase-coupling to local theta oscillations.
The neural representation of position in the medial entorhinal cortex may be stabilized by synaptic connectivity across modules, which enforces coherent updates in their states.
Stefan M Lemke, Dhakshin S Ramanathan ... Karunesh Ganguly
Sleep spindles, distinctive brain activity patterns occurring in non-REM sleep, modify cross-area connectivity in the motor network relevant for behavioral flexibility, impacting subsequent behavior.
Margaret M Cunniff, Eirene Markenscoff-Papadimitriou ... Vikaas Singh Sohal
In POGZ heterozygous mice, reduced anxiety-related avoidance is associated with decreased feedforward inhibition and theta synchrony in the hippocampal-prefrontal pathway.
Stimulus-induced causal interactions in the gamma range can flow in direction opposite to the canonical microcircuit, violating the notion that they are signatures of feedforward communication.
Excitatory and inhibitory cortical neurons drive parallel vasodilatory pathways, while vasoconstriction is mediated exclusively by inhibition acting via Neuropeptide Y binding to Y1 receptors.
A novel micropositioning approach allows remote-controlled, micrometer-resolution actuation of many densely packed, arbitrarily shaped probes with a device whose size and weight scale much more efficiently with probe count compared to current methods.
