Pohjola the bottom of the World

In Finnish language ancient cosmology has survived. Northern hemisphere was not thought to be the top of the world but instead the bottom.

Modern words:

Pohjoinen = North
Pohjan tähti = North star
Pohja = Bottom

so literally translated

Pohjoinen = Direction of the bottom
Pohjan tähti = Star of the bottom

Remember that ancient civilizations orginated from the southern hemisphere. Finnish language has some very old words.

In Finnish mythology:

Pohjan Akka, Louhi, Loviatar = Lady of the bottom

Lovi = under world = transcendental state of mind = being high

Falling into lovi = shamanic visionary trip = going to the under world

Pohjola, Lovi = The underworld

Seems that christianity turned the old mythology upside down. Gods became demons, and literally top became bottom. And previously holy places became unholy.

Hidden images as tool of manipulation

"Or hidden images as tools of neuro psychological manipulation".

This is just a theory I made up and I'm now researching for art purposes yet unknown...

Assumption is that it is possible to make imagery that has extra content which is completely hidden from the viewers consciusness, but the still has powerful conditioning effect at neural level. This assumption is based on observations, visual recognition and neural networks theory ect.

I haven't found much previous research about this specifig area yet. I'm sure there is some.

Do you have reading recommendations about this or something related. Ideas how to study and test this in practice. Also discussion about this is very welcome.