Upper chest

[SyuRi]

Is there a way, when bodybuilding, to target the upper chest?

I recently came across this text

The chest is a group of muscles and muscles are made of motor units. Motor units either contract or relax. There is no in between. The only muscle that has been shown to selectively recruit fibers in an area is the abdominal wall. You can’t make the upper or lower chest bigger or smaller, this is a myth. What you can do is lose fat (to increase the definition of the cut in the lower chest) and then simply contract the chest to make it larger.
When you do inclines, instead of working the upper chest, testing with electrodes shows the entire chest contracts, but has less load and more tension is shifted to the shoulders. So the incline is great to work the chest and shoulders, it apparently does not target the upper chest according to what research and studies show to date.

I mean how can so many people be wrong? Especially professional bodybuilders?
Is this text true?

[Argent_Towers]

Where did you find this “text?”

[SyuRi]

Sorry, i found it here

http://www.naturalphysiques.com/faq/392.html

It appears on other websites as well, so i’m not sure where is the original one.

[ultrafilter]

There’s a really easy experiment to refute this. Go and do nothing but flat and decline benches for a couple months, and then hit the incline press hard. The next day, your upper pecs are going to be ridiculously sore even though you’ve been training your chest for a while. If what this guy is saying is true, that shouldn’t happen.