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Psychosis is a highly misunderstood condition. In this talk, Paul illustrates the condition’s complexity, taking apart how our brains perceive reality by reinventing illusions around us. If perception is just a form of controlled hallucination, what does that make hallucination?

Paul Fletcher is the Bernard Wolfe Professor of Health Neuroscience at the Department of Psychiatry in Cambridge, and works at the Behavioural and Clinical Neuroscience Institute.

This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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  1. my experiences with psychosis: i was happy in my life living happy like everyone else and i was like completely relax careless person in my 17s and one day suddenly i caught of psychosis . and( it is true when i said this to people they dont believe me . ) after that day my life turned out dark side. i had trouble with people and lost social connections with people . my psychosis is about fear of looking people because i felt like if i look at people i can bother them or they can think bad things about me and this feelings limited my behaviour and i felt like i cant control over my body coz of resisting myself(not on purpose) i felt deep fear feelings that makes me thing if i do wrong thing and whenever i tried not to do some things i found myself doing that more .(my biggest fear is looking people and even if my eyes doesnt stare directly at them i felt like i was looking them)

    if u guys have a same problem u can contact with me.

    comment below

  2. Hmmm.. Ok, so when evidence backs your perceptions and the results of known input renders an absolute, and repeatable outcome, not just for me but for others I convey to others or they convey to me, isn't reality but psychosis? Sorry, but I trust my perceptions until they don't make sense anymore such as when I've been on pain meds in post surgery. Even then, I knew not to trust my perceptions from the evidence of the events that have happened.

  3. Unlikely a video game more likely AI iterations. This indicates AI personality engineering. Wow. Reverse engineering the psychiatric science of personality development using disorder models to give rise to AI …ehhm video games. Wow thats some rabbit hole. A man made machine will never have organic psyche.

  4. I only just finished the game Hellblade: Senua's Sacrifice the other day. It was really, really good!

  5. my own problem with the game is that the voices are so articulate whereas psychosis doesn't really give that coherent of a sentence

  6. I suffered delusions and hallucinations. I also suffered from bipolar. The church failed me. They demonized me. I dealt with spiritual abuse. I now have ptsd. I believe in doctors and medications. I thank God for my doctor and medications. I don’t go to church anymore. I’m into new age instead. I meditate a lot and it helps me.

  7. Hmm… Slightly concerned by the fact that 'psychosis' is spelt wrong on the powerpoint. But very enjoyable TED talk. 🙂

  8. 👁️👌👌👌😇🐅 plz see the truth. Phycosis or not phycosis that is the question 😇

  9. just realized he's talking about Hellblade(the video game part). I was curious about psychosis since playing the game and i never would have imagined I'd run into a video with one of the people who collaborated with the creators to make such a haunting experience of a game

  10. Mental illness doesn't exist…as a free human beings we have all different experiences, so not the same perceptions and subconscious paterns. Who thinks independently and by his own is mentally ill…what a nonsens…like all Psychiatry created to keep us "in line".

  11. I hate when YouTube keeps undoing the likes for videos on me especially when they are this informative

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