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Updated: Jan 10, 2026
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Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention
Published on: October 16, 2013
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Convergent Control of NREM Sleep and Anesthesia by Prefrontal Layer 5 Extratelencephalic Neurons
Biorxiv : the Preprint Server for Biology
|November 24, 2025
Summary
Researchers discovered specific prefrontal cortex (PFC) neurons that promote unconsciousness. Activating these NREM and Anesthesia Promoting (NAP) neurons deepens sleep and enhances anesthesia, revealing new insights into consciousness regulation.
Area of Science:
- Neuroscience
- Sleep research
- Anesthesiology
Background:
- Cortical mechanisms suppressing consciousness are not well understood.
- Prefrontal cortex (PFC) neuron activity during anesthesia is unclear.
Purpose of the Study:
- Identify specific neuronal populations in the PFC involved in anesthesia and sleep.
- Elucidate the role of these neurons in regulating consciousness.
Main Methods:
- Utilized chemogenetics to manipulate neuronal activity in mice.
- Identified specific neuronal subtypes using transgenic mouse lines.
- Recorded neuronal activity and sleep patterns under anesthesia.
Main Results:
- Identified NREM and Anesthesia Promoting (NAP) neurons, a subset of PFC Layer 5 extratelencephalic (L5 ET) neurons.
- NAP neuron activation enhances anesthetic potency and deepens NREM sleep.
- Inhibiting NAP neurons reduces anesthetic effects.
Conclusions:
- PFC L5 ET neurons form a unique circuit promoting both natural and drug-induced unconsciousness.
- These findings have implications for understanding sleep regulation and anesthetic mechanisms.
- Identified a novel neuronal target for modulating consciousness.
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