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| Format: | Artículo científico |
| Language: | es |
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Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz
2014
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| Online Access: | https://www.redalyc.org/articulo.oa?id=58229962007 |
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Table of Contents:
- El origen y las funciones de los sueños a partir de los potenciales PGO Ignacio Ramírez-Salado Manuel Alejandro Cruz-Aguilar Medicina PGO Dreams Key words consciousness Understanding the phenomenon of sleep and dreams has fascinated humans always. However, the scientific study of sleep is relatively recent. In 1953, Aserinsky and Kleitman found that slow wave sleep (SWS) was periodically interrupted by episodes of rapid EEG activity, which are accompanied by rapid eye movements (REMs), and named this sleep phase as REM sleep. Subsequently, in 1957, Dement and Kleitman discovered that these rapid eye movements coincided with the appearance of dreams. By using animal experimental models, the subcortical mechanisms underlying REM sleep have been studied, and it has been demonstrated that this activity depends on the sero - tonergic activity from wakefulness, which promotes the formation of peptides that trigger certain structures of the brainstem, where cholin - ergic mechanisms of REM sleep are integrated. In turn, on the pontine region monophasic phasic potentials (300-400 μV) are generated that can also be recorded on the lateral geniculate body and in the occipital cortex; hence the name of ponto-geniculo-occipital waves (PGO). These potentials spread to the oculomotor system to provoke the REMs of REM sleep and possibly give rise to visual hallucinatory phenomena. Furthermore, it has been shown that certain limbic struc - tures related to emotion and memory are activated by these potentials. This suggests that PGO waves generate mnemonic and emotional components of dreams. Several aspects of the functions of these PGO waves remains to be determined, but knowledge about the origin of brain phenomena that generate dreams has had a breakthrough from its study. In the present work we review the literature concerning the work done over PGO waves and its contribution to the knowledge of the origin and functions of dreams. 2014 artículo científico 0185-3325 https://www.redalyc.org/articulo.oa?id=58229962007 es http://www.redalyc.org/revista.oa?id=582 Salud Mental application/pdf Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz Salud Mental (México) Num.1 Vol.37