Related post:
https://www.quantamagazine.org/sleep-evolved-before-brains-h...And an interesting comment of someone on FB:
Hydra
Hydra have a diffuse neural system
But no brain to speak of
A simple creature echoing older, more primitive forms
They doze off, so we've found
Using familiar chemistry
To slumber every four hours
When I sleep I descend like a bathysphere Down through layers of earlier incarnations
Dipping below the surface
Leaving the airy light of consciousness behind
To enter the involuntary dream world of Freud and Jung
Deeper still then dreams themselves disperse
Slipping away like darting fish
Leaving me reptilian, autonomic, just breath and pulse
But there's further to go - into the abyssal dark
To reach my fundamental hardware
Where I am the hydra
https://www.facebook.com/QuantaNews/posts/1789738887890362
And an interesting comment of someone on FB:
Hydra
Hydra have a diffuse neural system
But no brain to speak of
A simple creature echoing older, more primitive forms
They doze off, so we've found
Using familiar chemistry
To slumber every four hours
When I sleep I descend like a bathysphere Down through layers of earlier incarnations
Dipping below the surface
Leaving the airy light of consciousness behind
To enter the involuntary dream world of Freud and Jung
Deeper still then dreams themselves disperse
Slipping away like darting fish
Leaving me reptilian, autonomic, just breath and pulse
But there's further to go - into the abyssal dark
To reach my fundamental hardware
Where I am the hydra
https://www.facebook.com/QuantaNews/posts/1789738887890362