The brain is not a prediction machine, it does not make controlled hallucinations, best guesses, neither does predictive coding nor predictive processing explain its function. Deep learning and computer models may be great in making predictions, but the most advanced artificial intelligence anywhere till date is a good memory system, where inferences are smartly made based on data, but what it means to feel-like or have feelings, a major component of natural intelligence exceeds its capability. The computer that can win games, predict protein structures, drive itself and much else can do nothing when struck by some object. It does not have actual feelings, which could also have been picked up, to feel-like before the situation. For example -- to feel fear, while approaching a situation outside its training data.

A'hallucination machine' that sends your brain on a psychedelic trip without the need for drugs has been developed by scientists. Using Google Artificial Intelligence and a virtual reality headset, the device makes users hallucinate as if they have taken LSD or magic mushrooms. The machine was developed to help researchers better understand how the brain responds to altering realities. Brain scans taken on people using the machine could help determine if our'reality' is just a type of hallucination, the researchers claim. Through a virtual reality headset, the hallucination machine repeatedly shows selected images and patterns, such as a dog (top right) or colourful lines (bottom left) and spirals (bottom right) layered over reality.