How do drugs like ketamine or LSD make you “see” life differently

Question

So ive had on LSD some pretty wierd distortions such as seeing things in different colours or my vision becoming like a fisheye, like i had gopro for eyes

How does that work? Is your eye changing, like when your pupils get bigger or just signals in your brain interpreting it like that

In: Chemistry

Answer 1

Everything you experience is essentially ‘made up’ by your brain interpreting inputs it receives form all your senses. If you change the chemistry of the brain, such as taking hallucinogens, you change the way the brain interprets signals it receives.