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Sunday, November 15, 2009


Until recently it was thought that during dreams the unconscious worked with psychological purposes. Contrarily last month, J.A.Robson (Nature Reviews Neuroscience), argued that main function of dream is physiologic: tuning circuits, advancing sounds and emotions before waking up, an adaptation of the mind for the vigil, a raw test for the following day, a tuning for the conscious awakening. For Robson the dream is a continuous parallel state of conscience, suppressed to the awakening. Rodolfo Llinás (New York University), alternatively sustains that "it is not a parallel state but the same conscience, in absence of real sensorial stimuli”. To the awakening the brain revises dream images, to see if correct. From the discovery of rapid eye movements (REM), the neural circuits of the dream begin to be understood better.
REM activity appears early in fetal life, before it develops full dreams. REM dream could represent a state of proto-conscience, model of virtual reality of the world with functional use for the development and maintenance of the conscience of the awakening. REM builds neural connections in visual areas and the fetus see something in terminus of brain activity designing virtual, biological models of space time. Full-dreams will come later. Some people have ability to watch their own dreams (lucid dreams), without necessity of waking up. Ursula Voss of J. W. Goethe - Frankfurt analyze brain waves during REM dream, to wake up and lucid dream. The waves of lucid dream and of the awakening involve frontal areas, appearing flat waves during normal dream. Hobson comments : " they are 2 systems running at the same time."
Hasta hace poco se pensaba que durante el sueño trabajaba el inconsciente con propósitos psicológicos. Contrariamente el mes pasado, J.A.Robson (Nature Reviews Neuroscience), arguyó que la principal funcion del sueño es fisiológica: afinando circuitos, anticipando sonidos y emociones antes de despertar, una adecuación de la mente para la vigilia, un test crudo para el dia siguiente, un afinamiento para el despertar consciente. Para Robson el sueño es un estado paralelo continuo de conciencia, suprimido al despertar. Rodolfo Llinás (New York University), alternativamente sostiene que “no es un estado paralelo sino la misma conciencia, en ausencia de estimulos sensoriales reales. Al despertar el cerebro revisa las imagenes oníricas, para ver si correctas. Desde el descubrimiento de los movimientos oníricos oculares rapidos (REM), los circuitos neurales del sueño empiezan a ser mejor comprendidos.
La actividad REM aparece temprano en la vida fetal, antes que este desarrolle sueños plenos. El sueño REM podria representar un estado de proto-conciencia, un modelo de realidad virtual del mundo con uso funcional para el desarrollo y mantenimiento de la conciencia del despertar. El REM construye conexiones neurales en areas visuales y el feto ve algo in terminus de actividad cerebral diseñando virtualmente, modelos biologicos de espacio tiempo. Los sueños completos vendrán mas tarde. Algunas personas tienen habilidad para expectar sus propios sueños (sueños lucidos), sin necesidad de despertarse. Ursula Voss of J. W. Goethe- Frankfurt analyze las ondas cerebrales durante el sueño REM, despertar y sueño lucido. Las ondas del sueño lucido y del despertar involucran areas frontales, apareciendo ondas quietas durante el sueño normal. Hobson comenta al respecto:” son 2 sistemas corriendo al mismo tiempo”.



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