regarding the second one, anyway, it is just the abstract, i.e., a little summary.
In general, these studies confirm obvious things but fail to trace any kind of system. And, what's worse, they do not pose ANY of the pressing questions that current musicology proposes. It's the problem with USA-made music psychology...
Everything we do, or do not do, depends solely on the brain; there, only there, our thought is born, our way of being human in this world.
The heart, scientifically speaking, is an involuntary muscle, absolutely central to our survival on terrestrial soil, and that's it.
Religion entrusts the heart with the center of our soul and thus, for those who believe, with our goodness or evil.
I too, in one of my interventions, used the words heart and brain but this was done with full awareness of using a field that may be very dear to us but is not true.
I can only share Daniele's message, adding one thing: the metaphorical use of the word "heart" can be misleading, especially when opposed to the word "brain". Okay, it is a common, ancient, very "successful" antithesis. But it does not speak of reality, and we are saying this here, and it forces us too often to divide the world into black and white, beautiful and ugly, good and bad, something that hardly helps us understand anything.