Rapid eye movements during REM sleep represent gaze shifts in dreaming mice. According to a new study published in the journal Science, the characteristic eye movements that give rapid eye movement (REM) sleep its name represent gaze shifts in the dream world of sleeping mice. The findings reveal
New research shows that the characteristic eye movements of REM sleep represent gaze shifts in the dream world of sleeping mice.According to a new study published in the journal, the characteristic eye movements that give rapid eye movement sleep its name represent gaze shifts in the dream world of sleeping mice. The findings reveal an observable readout of the internal sense of direction in the dream state.
Many previous studies have relied on the subjective and potentially inaccurate reporting of dreams by humans. Instead, Yuta Senzai and Massimo Scanziani focused on the head direction system of the mouse as an objective readout. While awake, the activity of HD cells in the mouse’s thalamus encodes the direction of the animal’s head as it explores or navigates the environment. Changes in HD cell activity are often accompanied by fast saccade-like movements of the eyes in the same direction.
France Dernières Nouvelles, France Actualités
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