Theta oscillations decrease spike synchrony in the hippocampus and entorhinal cortex.

@article{Mizuseki2014ThetaOD,
  title={Theta oscillations decrease spike synchrony in the hippocampus and entorhinal cortex.},
  author={Kenji Mizuseki and Gy{\"o}rgy Buzs{\'a}ki},
  journal={Philosophical transactions of the Royal Society of London. Series B, Biological sciences},
  year={2014},
  volume={369 1635},
  pages={20120530}
}
Oscillations and synchrony are often used synonymously. However, oscillatory mechanisms involving both excitation and inhibition can generate non-synchronous yet coordinated firing patterns. Using simultaneous recordings from multiple layers of the entorhinal-hippocampal loop, we found that coactivation of principal cell pairs (synchrony) was lowest during exploration and rapid-eye-movement (REM) sleep, associated with theta oscillations, and highest in slow wave sleep. Individual principal… CONTINUE READING
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