Final answer:
Olfactory information is processed in a unique pathway in the brain, allowing smells to trigger memories and emotions. Olfactory neurons in the nose send signals through the olfactory bulb to various regions of the brain, including the cortex and limbic system.
Step-by-step explanation:
Olfactory information is processed in a unique pathway that differs from other sensory systems. Olfactory neurons in the nose send axons through the olfactory foramen to reach the olfactory bulb. From the olfactory bulb, signals are sent directly to various regions of the brain, including the olfactory cortex, frontal cortex, amygdala, hypothalamus, and temporal lobe. This pathway allows smells to trigger memories, emotions, and thoughts. Unlike other sensory systems, olfactory signals do not pass through the thalamus before reaching the cortex.