flexi, I get your point but this is exactly what the scientists are trying to conceive as to what and how emotions like these are created when a bunch of neurons get activated on getting a stimulus. The feeling of joy and sadness is also electrochemical. Inside the brain all information is stored in quantitative terms..chemical in nature. That is what the neuroscientists say.

Pardon me from digressing but other physical phenomena like movement, beating of the heart or even having an erection is chemical in nature...I could explain them all but lets do it some other time.