Neurophysiology of Rapid Eye Movement Sleep Deprivation

Rapid eye movement sleep (REMS) is an active state characterised by cortical desynchronisation, vivid dreaming and muscle atonia. Physiologically, REMS relies on a finely tuned balance between cholinergic “REM-ON” neurons in the pontine tegmentum and monoaminergic “REM-OFF” neurons in the locus coeruleus. Deprivation of REMS (REMSD) disrupts this balance, leading to prolonged firing of noradrenergic neurons, elevated noradrenaline levels and downstream effects on neuronal homeostasis. Key mechanisms activated by REMSD include mitochondrial dysfunction with cytochrome c release, induction of intrinsic apoptotic cascades and oxidative stress, all of which compromise neuronal integrity. At the molecular level, REMSD alters the expression of genes involved in chromatin remodelling, synaptic transmission and memory consolidation, suggesting epigenetic and transcriptional responses to sleep loss. Elevated noradrenaline also modulates microglial activity and neuroimmune pathways, promoting a proinflammatory milieu. Functionally, these changes manifest as cognitive deficits, mood disturbances and heightened vulnerability to neurodegenerative processes. Experimental modulation of noradrenergic signalling—for example via alpha-adrenoceptor antagonists—can mitigate several REMSD-associated abnormalities, pointing to potential therapeutic strategies. Overall, the neurophysiology of REM sleep deprivation reveals a critical role for monoaminergic control, mitochondrial integrity and gene regulation in maintaining brain resilience, with implications for understanding sleep disorders, mood dysregulation and neurodegenerative disease.

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Neurophysiology of Rapid Eye Movement Sleep Deprivation publication trend

The graph below shows the total number of articles in neurophysiology of rapid eye movement sleep deprivation across all publications each year (not limited to Nature Index journals).

Technical terms

Rapid Eye Movement Sleep (REMS): A sleep phase marked by active cortical patterns, dreaming and muscle atonia.

REM Sleep Deprivation (REMSD): Experimental or clinical reduction of REMS, leading to disrupted monoaminergic regulation.

Noradrenaline (NA): A monoamine neurotransmitter released by locus coeruleus neurons, central to arousal and stress responses.

Apoptosis: Programmed cell death triggered by intrinsic or extrinsic pathways, often involving caspase activation.

Synaptic Plasticity: Activity-dependent strengthening or weakening of synaptic connections, fundamental to learning and memory.

References

1. Rapid Eye Movement Sleep Deprivation Induces Neuronal Apoptosis by Noradrenaline Acting on Alpha1 Adrenoceptor and by Triggering Mitochondrial Intrinsic Pathway. Frontiers in Neurology (2016).
2. Sleep and Neuroimmunomodulation for Maintenance of Optimum Brain Function: Role of Noradrenaline. Brain Sciences (2022).
3. REM Sleep Loss-Induced Elevated Noradrenaline Plays a Significant Role in Neurodegeneration: Synthesis of Findings to Propose a Possible Mechanism of Action from Molecule to Patho-Physiological Changes. Brain Sciences (2023).
4. Transcriptome Analysis Reveals Altered Expression of Memory and Neurotransmission Associated Genes in the REM Sleep Deprived Rat Brain. Frontiers in Molecular Neuroscience (2017).