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The term "archipallial" refers to the archipallium, a part of the brain. In amphibians, the cerebral hemispheres include the paleopallium (olfactory lobe), the archipallium, and the basal nuclei. All these areas process olfactory stimuli and send impulses to the brainstem. The archipallium functions as a correlation center and is considered a precursor to the mammalian hippocampus. The adjective "archipallial" means "of or relating to the archipallium".12

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