Theories About The Function of Rapid Eye Movements
According to "scanning hypothesis" the directional properties of REM sleep eye movements are related to shifts of gaze in dream imagery. Against this hypothesis is that such eye movements occur in those born blind and in fetuses in spite of lack of vision. Also, binocular REMs are non-conjugated and so lack a fixation point. In support, research finds that in goal-oriented dreams, eye gaze is directed towards the action described by the dreamer.
Other theories are that they lubricate the cornea, warm the brain, stimulate and stabilize the neural circuits that have not been activated during waking, create internal stimulation to aid development of the CNS, or lack any purpose, being random creation of brain activation.
Read more about this topic: Rapid Eye Movement Sleep
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