Oliver Sacks Quote
Nelson feels that the dark tunnel described in most NDEs represents constriction of the visual fields due to compromised blood pressure in the eyes, and the bright light represents a flow of visual excitation from the brainstem, through visual relay stations, to the visual cortex (the so-called pons-geniculate-occipital pathway
Oliver Sacks
Nelson feels that the dark tunnel described in most NDEs represents constriction of the visual fields due to compromised blood pressure in the eyes, and the bright light represents a flow of visual excitation from the brainstem, through visual relay stations, to the visual cortex (the so-called pons-geniculate-occipital pathway