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Chapter category: Neuropharmacology

Sleep Hippocampal Theta Rhythm and Sensory Processing

This chapter appears in the following book:

Sleep and Sleep Disorders:
A Neuropsychopharmacological Approach

Edited by: Malcom Lader, Daniel P. Cardinali and S.R. Pandi-Perumal
ISBN: 0-387-27681-5
» Get more information about this book at landesbioscience.com «

Chapter authors:
Marisa Pedemonte and Ricardo A. Velluti


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Ancient human cultures have developed diverse forms of a device that, based on sensory stimulation, is used to put babies to sleep: the rocking cradle. Vestibular and somatosensory stimulation produced by the rocking movements, complemented by eye closure and other stimulation such as constant temperature and the mother’s voice/song (lullaby) activating the auditory system, are able to induce sleep. On the other hand, it is a common experience that reducing the sensory afferent volleys to the brain can facilitate sleep. A series of experimental data will be presented demonstrating the sensory input relevance in the organization of the sleep and wakefulness cycle. Firing rate shifts in auditory and visual neurones, changes in the pattern of discharge, and, most important, the temporal correlation of the spike timing with the hippocampal theta rhythm, will be set forth.

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