人間の目は、観察しようとする​面の中央より少し上の方を自然に見るそうである


> 人間の目は、 _観察しようとする_ ​ **面の中央** より少し上の方を自然に見る **そうである**
> 。([source](https://www.docdroid.net/847v2dg/img-20170413-0001-new.pdf.html))

I think I pretty much understand this sentence, it says that the human eye
tends to prefer the upper center of a visual medium (for context, see the
attached image). However, _観察しようとする_ **面の中央** poses a serious problem.

> Concerning the human eye, the center of the surface (which) it makes an
> effort to observe,...

In this case, I used "観察しようとする" as an attribute to "面の中央", but I'm not sure if
that's okay or not.

I also don't know whether そうである modifies the whole sentence or just the second
half after より. The most literal translation of the whole sentence I can muster
would be this:

> Concerning the human eye, it seems that it looks a bit more natural at the
> upper direction (of the surface...) than at the center of the surface
> (which) it makes an effort to observe.

I put the brackets in to make clear to what I'm referring. I'm not sure if
these reference points are correct in this sentence, that's why I feel unsure
about my understanding of the whole sentence. I think that in the above
standing version, そうである modifies the whole sentence, but I don't know if
that's correct, as I already said.

For some reason I still feel notoriously insecure about the use of より... I
apologize if I should've made a mistake on that one too, but it's hard for me
to research it because the examples in my textbook were very bad and the texts
only rarely bring up comparisons at all.

EDIT from 04-14-2017: I still have problems understanding the construction.

My problem mostly revolves around 面の中央 and its modifier 観察しようとする. Strictly
speaking, that which the human eye "wants to observe" is not the page, but the
center of the page here, right? After all, 面 is an attribute to 中央 here. I
might overinterpret things now, but wouldn't this mean that the text basically
says "The human eye doesn't observe just **the center** of the page, but only
the **part slightly above** the center of the page"? What I want to say is
that it sounds like the sentence gives us two negative statements about the
human eye, because only perceiving the very center of a map isn't much better
than just perceiving an area slightly above the center of a map. However, I
feel like the sentence actually wants to say that the assumption that the
human eye perceives the WHOLE map is wrong, because it only perceives the said
area.

> It seems that the human eye does naturally look at the area a little up from
> the center of **the page** it wants to observe

I mean, in this case it's relatively easy for me to just go with the option
which makes more sense. But are there any other "hard" criteria in the syntax
of this whole sentence or in the structure of the phrase 観察しようとする面の中央 which
make it clear that A and not B is meant:

> A: The center of **the page** it wants to observe  
>  B: The page's **center** it wants to observe




> 人間の目は、 _観察しようとする_ ​ **面の中央** より少し上の方を自然に見る **そうである** 。

I visited the site. Yes, the article is very interesting.

> 観察しようとする面

It is not the surface that makes an effort to observe, but the man, who has
the observing eyes, makes an effort to observe the surface.  
In this context, 「しようとする」is not "to make an effort", but "be going to."

> ​面の中央より少し上の方

より means "from". So this phrase means "a little upper part from the center of
the surface (of the map)".

> そうである

そうである modifies the whole sentence. The author is not sure of the contents of
the sentence, because he/she didn't find the fact by himself/herself.




> 人間の目は、 _観察しようとする_ ​ **面の中央** より少し上の方を自然に見る **そうである** 。

I visited the site. Yes, the article is very interesting.

> 観察しようとする面

It is not the surface that makes an effort to observe, but the man, who has
the observing eyes, makes an effort to observe the surface.  
In this context, 「しようとする」is not "to make an effort", but "be going to."

> ​面の中央より少し上の方

より means "from". So this phrase means "a little upper part from the center of
the surface (of the map)".

> そうである

そうである modifies the whole sentence. The author is not sure of the contents of
the sentence, because he/she didn't find the fact by himself/herself.

