DIENCEPHALON By N., Pam M.S. - April 7, 2013 Posterior part of the forebrain. DIENCEPHALON: "The diencephalon includes the thalamus, epithalamus, hypothalamus and pineal gland." Related Psychology Terms POSTERIOR COMMUNICATING ARTERY MIDBRAIN MAGNOCELLULAR NUCLEUS OF THE BASAL FOREBRAIN POSTERIOR PITUITARY PITUITARY GLAND BIOLOGICAL INTELLIGENCE OCCIPITAL LOBE VENTRAL AMYGDALOFUGAL PATHWAY SUBICULUM FLOCCULONODULAR LOBE Cite this page: N., Pam M.S., "DIENCEPHALON," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/diencephalon/ (accessed April 20, 2021).