Tape one half of a ping pong ball over each of your eyes, sit under red-gel lamps and listen to white noise – and then prepare to enter a very surreal world.

They hope these volunteers can use their own spiritual experiences to describe these psychedelic experiences and to help figure out why they're so beneficial.

I strapped TDCS electrodes to my head to see if I could make myself smarter by stimulating my brain. Here’s what happened

Scientists say sleep patterns previously thought exclusive to mammals and birds are also found in lizards.

The world’s great religions and spiritual journeys emerged from dreams and visions. Neurochemistry tells us how