So essentially, eye motions during REM sleep are not directly related to visualization of dreams. Instead, it's linked to another set of neurons. "The eye mo

So essentially, eye motions during REM sleep are not directly related to visualization of dreams. Instead, it's linked to another set of neurons. "The eye movements are not actually scanning your dream - they're reorienting your visual thoughts," Prof Horne told BBC News. Further, the study delves into the connections between REM sleep and wakefulness. This could lead into lucid dreaming, as other commenters have remarked. "This study endorses other findings that REM sleep has many similarities to wakefulness. Others are using the new findings to dig into evolutionary causes. Prof William Wisden, a neuroscientist at Imperial College London, was also convinced by the similarity of brain activity between awake and REM states - but he said there are bigger questions still to answer. "The most fascinating question of all is why do we have to have REM sleep? Why does our brain have all this circuitry to do that?