'The quantum information within the microtubules is not destroyed, it can't be destroyed, it just distributes and dissipates to the universe at large.

'If the patient is resuscitated, revived, this quantum information can go back into the microtubules and the patient says "I had a near death experience".'

He adds: 'If they're not revived, and the patient dies, it's possible that this quantum information can exist outside the body, perhaps indefinitely, as a soul.'