pseudohallucinations

_{“Indeed, the line between perceiving and hallucinating is not as crisp as we like to think. In a sense, when we look at the world, we are hallucinating all the time. One could almost regard perception as the act of choosing the one hallucination that best fits the incoming data.”} 
  V.S. Ramachandran, The Tell-Tale Brain: A Neuroscientist's Quest for What Makes Us Human