Andrew Huberman· PhD
the dreams are often very visual uh you know rapid eye movement sleep so that there's something happening that that actually it's interesting all the neuromodulators are downregulated during sleep and then during G sleep the cocoline comes up right so that's a very powerful neuromodulator it's important for attention for example but it doesn't come up in the prefrontal cortex which means that the circuits in the prefrontal cortex that are interpreting what the sensory input coming in uh are not turned on so any of these whatever happens in your visual cortex is not being monitored anymore so you get bizarre things you know that you start floating and you know things happen to you and you know it's it's not anchored anymore