We show, in particular, the limitations of the influential *thalamic gating* hypothesis proposed 25 years ago. We outline additional and potentially more preponderant mechanisms of sensory decoupling:pic.twitter.com/EfRaA6sSoU
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We show, in particular, the limitations of the influential *thalamic gating* hypothesis proposed 25 years ago. We outline additional and potentially more preponderant mechanisms of sensory decoupling:pic.twitter.com/EfRaA6sSoU
1/ In NREM sleep, there is growing evidence that neuronal bistability could induce a form of *cortical gating*, preventing sensory information to spread throughout the cortex.pic.twitter.com/9JvGnSG33b
2/ In REM, sensory information coming from within (the stuff that dreams are made on?) could block external information (*informational gating*). Ultimately, very different mechanisms occurring in disparate phys. states could result in the same outcome: the preservation of sleep.pic.twitter.com/ke7rp5Xu71
But the brain can still complexly process sounds during sleep! *Local sleep* (part of the brain sleeping less deeply or waking up) could support the confined processing of auditory information, allowing the fine monitoring of the environment without triggering a global awakening.
Such local intrusions of wake during sleep is the reversed phenomenon of the local intrusions of sleep during wake that we discussed last year:https://twitter.com/thandrillon/status/1173219562948452357 …
This review is part of a special issue on the Physiology of Sleep edited by @VVyazovskiy & Prof Jenny Morton. Thanks to @HFSP, @nhmrc, @turnerinstitute and @Mon_Bio_Imaging for their support. And @Cognition_ENS where I conducted this research under the supervision of @SidKouider!
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