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. 2014 Mar 19;4(1):150–201. doi: 10.3390/brainsci4010150

Figure 1.

Figure 1

Hypothetical scheme illustrating cellular consequences of sleep deprivation. Prolonged wakefulness leads to the activation of cellular stress events: Endoplasmic reticulum (ER) stress and oxidative stress are activated. Myelination is downregulated. Protein synthesis (in addition to mTORC1 activity) is diminished (both globally and at synapses). Despite these changes, net synaptic upscaling occurs without proper pruning. There is also a possible relationship between the increased number of synapses and decreased neuroligin following sleep deprivation. In addition, accumulation of sleep regulatory substances in the post-synaptic terminal may lead to an increased drive for sleep.