In Greek the verb related to pathos means to feel, it is as if feelings could be seen as they are conveyed. Sensitivity too refers to the feelings felt and conveyed...

IMHO this is exactly what it is :))

fremito, means this 'vibration, quiver, throb', and in the artistic context defines ana ability to vibrate in resonance and according to internal and external stimulus

from each of his paintings one can feel the inner vibration of joy and love for life
http://www.komarovart.com/links.htm

they have a common chord - a harmony echoing the same inner vibration
http://www.richardnathanson.co.uk/Gauguin.htm

Artistic material in Kandinsky's view not only resonated with 'inner vibration': This inner vibration itself reverberated with tensions and clashes of highly disparate dimensions and origins ...
http://books.google.it/books?id=tz9vmAEFTFoC&pg=PA18&lpg=PA1...

In a like manner, if the material body of a man (we remember that the sounding-board represents matter) is subtle and responsive to the inner vibration of the soul, then the features of the man will somewhat show forth the Archetypal Form of his innermost self, of his "Augoeides"
http://rudhyar.com/harpsymbol.html

As with the sri yantra, and other sacred geometries, the images below carry a 'resonance' or 'vibration', and therefore possess a quality which goes beyond mere aesthetics. Images such as these- which are the visual expressions of sublime vibrations- have the inherent ability to transform the viewer by altering his or her inner vibration.
http://www.jackhaas.net/index_art_exhibit_celestial_vibratio...

.