As Captain Kirk in Star Trek, William Shatner took us to places "where no man has gone before", with stories that foreshadowed the invention of the mobile phone and tablet computers. Now, in real life, the actor is exploring virtual reality – but he wants the entertainment industry to be aware of its potential detrimental impact on vulnerable minds.
Shatner told the Guardian: "The use of technology to affect our minds is so powerful now that we need to be on guard in the future."
He is involved with Ziva Dynamics, a VR company, through which he has experienced "nightmarish footage" involving strange creatures that creep up on the user.
"It's so real: it's the stuff of nightmares … We've got to be really careful because you could put somebody into a psychosis," he said.