Scientists are still studying to determine the precise cause of our eyes moving during rapid eye movement sleep and found several possible theories:
1. Because of the frequent movement of the eyeballs during sleep, it may lubricate and shield the cornea from drying out.
2. It may be influenced by neurotransmitters like acetylcholine that regulate muscle activity and are particularly active during sleep.
3. It may facilitate the consolidation of memories and eye movements may be related to visual processing in that sleep.
4. Eye movements during sleep could be noted as increased brain activity and neural connections.
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