sensory pathways

retina ->optic nerve -> optic chiasm -> lateral geniculate nucleus and superior colliculus -> optic radiations -> visual cortex

cochlea -> auditory nucleus -> superior olivary nucleus-> inferior colliculus-> medial geniculate nucleus -> auditory cortex

taste buds -> cranial nerves ( VII, IX, and X) -> solitary tract nucleus -> thalamus -> primary gustatory cortex -> limbic system -> higher brain centers

oderant receptors -> olfactory epithelia -> glomeri -> primary olfactory cortex -> limbic system

dorsal horn -> spinal cord -> brainstem-> thalamus -> primary somatosensory cortex