brain slice

https://doi.org/10.1351/goldbook.11650
Slice of brain tissue immersed in artificial cerebrospinal fluid, used in electrophysiology experiments to allow study of a synapse or neural circuit in isolation from the rest of the brain, and in metabolic studies, under controlled physiological conditions.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 853 [Terms] [Paper]