You're joking, aren't you? What do you need "neuropsychology" when you can just sit down and write the music you imagine and feel?! This is the way all great composers did compose their great works. No need of tricks.
I am joking, although understanding how things are generally perceived is a great advantage to any artist - I would venture to say that this faculty is quite accute in all great artists, whether or not they are aware of the related physical mechanisms.
On another note, I may be pulling hairs here but great composers did not "just sit down and write the music [they imagined and felt]". For example, Mozart often complained of how people thought that his music came easily to him; Beethoven's sketchbooks are evidence enough that he did not just sit down and write the music he imagined and felt...he worked the ideas to the bone and often discarded what he had initially imagined.
As for this business about tricks - well, they aren't 'tricks' per se...but a good composer will draw the attention of the listener to what he wants them to hear. As I said above, a good understanding of human perception is required to do this effectively, whether it be conscious or not.