CUNEUS By N., Sam M.S. - 12 noun. The part of the occipital lobe, which is shaped like a wedge, on the center exterior of both cerebral hemispheres above the posterior calcarine fissure. CUNEUS: "Documented cases of the absence of the cuneus are rare." Related Psychology Terms CEREBRAL CORTEX VISUAL CORTEX PRECUNEUS MENTAL RETARDATION (CAUSES) A Comparison of Maternal and Paternal Filicide CALCARINE AREA CALCARINE FISSURE PARIETO-OCCIPITAL SULCUS BRAIN TUMOR DISORDERS ARTERIOSCLEROTIC BRAIN DISORDER Cite this page: N., Sam M.S., "CUNEUS," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/cuneus/ (accessed July 7, 2022).