Jai Sri Ganesha,
In the state of dream, gross eyes remains silent but mind act in perspective of eyes to visualize objects in light of dream,
As long as the wakeful state exist, mind rely on senses to interact with world of sense objects, as i attain the sleep state mind act both ways to feed spirit with a world away from this world,
This mind ever remains along with Jivatma and when Jivatma discard the body, mind act in other perspective to feed the life there irrespective of limbs and sense organs,
Man experience joy and sorrow in both state, either wakeful or dream state, suffering of Atman may not reach at the dead end with death unless of until respective oblations are made to untie unwanted knots and here with mortality, it is far easy than there with sole reliance on pitch of mind,
May lord bless all,
Thanks please