alexa Concurrent occurrence of rapid eye movement with spindle burst during nocturnal sleep in mentally retarded children.
Neurology

Neurology

Journal of Neurology & Neurophysiology

Author(s): Shibagaki M, Kiyono S, Watanabe K, Hakamada S

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Abstract Concurrence of REM and sleep spindle in 45 mentally retarded children (from 4 months to 8 years of age) was studied throughout nocturnal sleep, and the following results were obtained. (1) Twenty-five cases showed a single or burst of REMs during stage NREM with sleep spindles. (2) Twenty-nine cases showed sleep spindles at the beginning or toward the end of stage REM sleep. (3) No significant difference in DQ was found between the subjects with and without REMs during stage NREM sleep. The former subjects, however, had more normal clinical EEGs than the latter. (4) No significant difference in DQ or clinical EEG classification was revealed between the subjects with REMs during stage NREM sleep and those with spindles during stage REM sleep. (5) It was concluded that the concurrence of REM and sleep spindle during stage NREM is a useful sign for early diagnosis of mental retardation.
This article was published in Electroencephalogr Clin Neurophysiol and referenced in Journal of Neurology & Neurophysiology

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