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Now I can imagine the body being separated in parts. There is the liver, the bones, the skin, the eyes, the kidneys, the feet, the legs, or the brain.

All these sub-units work together coherently and they can be taken apart fairly simple. The eye can be taken out of the body and put on a table. So can the brain.

Now in the eye there are all kinds of sub-sub-units. The retina, the iris, or the stuff inside.

There are no such sub-sub-units to see in the brain. Nevertheless it is subdivided into parts that have no boundaries in a real brain.

Don't we impose an artificial structure by doing this? Of course there are parts to which the eyes are connected or parts to which other bodyparts are connected. There is the cortex where higher (human-like) massively parallel neurological concerts take place. And if you isolate these parts from other parts with certain functions they will stop to function. If you take them away and they are not there anymore it will influence other parts (for example, blind people lack the means of seeing color but are sometimes still able to see direction because this neurological processing is still present and working).

On what is this division based and isn't such a reduction endangering the workings of the whole? Is such an attitude not endangering the holistic picture? All partial processes are there but they depend highly on other processes. Isn't this connection taken away by the parting up? Can the processes truly be cut up in parts? It might come in handy though. It can maybe enlighten processes as a whole. But how is the line drawn? By looking at different kinds of neurons? By looking at different kinds of processes? There is a different process going on for the color experience and a memory or imagination of sound;. How are they different?

The division I refer to is the one you encounter when looking at the colorfull images of a naked brain (which on its own is already implying a break up of brain and body, a litteraly division in two parts). The are parts like the cortex on the outside of the brain. The cortex is subdivided in, for example, the visual system on the back of your head (which is sub-divided again in four parts, each performing a different task), the language region, the motor part, etc. Are these regions just performing different tasks? On what is this division base? On function only? On the kind of neurons? On visual aspects (like there are clearly different parts visible in the brain)? On just looking where brain neuron activity occurs when doing or thinking things. For example, in which regions occurs brain activity right now? When I am writing this very sentence. Is there a region for self awareness?

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    $\begingroup$ "On what is this division based" Can you cite/link to the subdivisions you are asking about, and summarize your current understanding of them, i.e., why such divisions are made in literature? Which division(s) in particular are you questioning here? Without clarifying any of this, this seems like a lenghty straw man argument to me. $\endgroup$
    – Steven Jeuris
    Jul 25 at 22:46

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