Motor neurons, i.e neurons from wich there emerge coherent and parallel signals to our body to move it in an orderly and coherent way, are situated in the upper cortex, wich can be activated by will, or artificial (in wich case the ones who do the controlling do actually the same, also by will, only not to move their own body, but someone´s other).
Considering perception, I know that smelling something doesn´t develop in the cortex, but seeing for sure. The neurons responsible for seeing are in the cortex in the back of your head. This region is divided by the so-called area´s V-1 to V-5, each with an own task. It possible that someone because of this sees only blackness but can nevertheless point out in wich direction an object moves. and some people can´t see the difference between a circle or a square.
The perception of feeling is also situated in the cortex on top of your head (I´m sure you know that deformed person that represents how the strength of the feeling if someone touches you; the person with the big lips).