The definition superficial features of the brain (spfBRN) refers to superficial features (spf) of the central nervous system (CNS) that apply to no part of the CNS smaller than the brain (BRN) ( NeuroNames ). The sprBRNs include the cerebrocerebellar fissure (ccbf), anteriorcerebellar incisure (acbi), superior pontine sulcus (sps) interpeduncular cistern (icis) and superior cistern (scis). Updated 4 Dec 2025.