Imagine my surprise when I was sleeping the other night and all of a sudden, in the dream, while I was chasing a blue and white balloon that got out of my hand and then started going down the hill–I ran to chase it when thump, I hit the bedroom floor where I had landed from this dream. This had never happened to me before, and I thought maybe I was sleepwalking, but then I realized I wasn’t in sleep paralysis during the REM stage, but rather I was actually acting out the dream. I thought about this a lot in the hospital as I was being treated for a broken collarbone.
I’ve heard Andrew talk about one of the reasons for sleep paralysis being protecting us from acting out those dreams and hurting ourselves. Yep! I’m glad that Doctor Ed addressed this during his invaluable monthly webinar recently, so I saw that I wasn’t crazy, but there were others experiencing the same type of dream disturbance. I found a research article on it and I thought I would share it. Doctor Ed also referenced a recent journal article about it as well, which should be posted shortly. Anyone else experience this?
From the guide:
Movement during REM sleep is controlled by two systems: one controls the input to spinal cord motoneurons to generate muscle atonia (extrapyramidal), and the other controls motor cortex activation to suppress locomotor activity (pyramidal). The main generator of REM-sleep is the predominantly-glutamatergic Subcoeruleus/Pre-Locus Coeruleus complex [SubC/PC- analogous to the rat/mouse sublaterodorsal nucleus (SLD)], which is anatomically situated just below the noradrenergic locus coeruleus in the pons (11). As well as projecting to many subcortical brain regions to promote and maintain REM sleep, the SubC/PC projects caudally to control the REM atonia neural network (12). Preceding and during REM sleep, the REM-active SubC/PC excites the inhibitory ventromedial medulla (VMM) and glycinergic neurons of the spinal ventral horn, which in turn tonically hyperpolarize spinal motor neurons (12, 13). This results in a temporary paralysis of skeletal muscles and thus significantly reduced REM muscle tone.
Disruption to this process results in abnormal motor behaviors during REM sleep