Oculomotor coordination following REM and non-REM sleep periods.

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Abstract
Tested the hypothesis that 1 function of REM sleep is maintaining facilitation of coordinated eye movements throughout sleep. 12 male Ss with uncorrected normal vision performed oculomotor tracking tasks after being awakened alternately at the onset and end of REM periods, counterbalanced across Ss. Performances required horizontal saccadic versional, smooth versional, and vergence eye movements, and imbalances between the 2 eyes were measured directly from the output of an analog difference circuit whose inputs were the horizontal electrooculogram of each eye. Ocular imbalances at onset compared with end of REM periods were of significantly greater magnitude and number during the saccadic and smooth version tasks, but did not differ during vergence. A control measure of oculomotor RT of saccades to step shifts of the target did not vary between onset and end of REM periods. (20 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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