I am not sure is it right place to ask this or not but is there any scientist here which can explain this.

we heard lots of people say "think by hear not brain" in some situation.

but we all know there is no neurons in heart. Is there any scientific explanation about above ?

because it is true that in some situation we have to solution one is totally logical but not acceptable by us or beloved one. and another one is accepted by us but not seems logical to do that.