Abstract

During the night sleep of 2 young adults, the horizontal and vertical components of eye movements during fast sleep have been recorded through DC amplifiers, and then recomposed on an X-Y plotter. These vecto-oculograms have been analysed minute by minute, then split into shorter segments in order to study the spatial organization of rapid eye movement bursts. These records show that the coverage of the four quadrants of the spatial field by the displacements of the eye axis was obtained only after a duration exceeding 2 min of fast sleep. The rapid eye movements grouped in a burst tended to concentrate in one quadrant or two contiguous quadrants while the inter-burst slow eye movements seemed to be responsible for the shifting of the eye axis to a different part of the spatial field.

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