How does the information from the brain goes back to the sense organ?
Information doesn’t go from the brain to a sense organ, its the other way around. Sense organs send information to the brain via afferent pathways of the PNS (peripheral nervous system). How this works is dependent on what sense your talking about. The basic outline for how senses work is a specialized receptor cell gets stimulated (light sound etc) and then sends an action potential to the thalamus where it is then routed to a specific cortex of the brain. Olfaction (smell) is the only sense that doesn’t get routed by the thalamus.
