hepatology - liver, neurology - ?

BRAIN
List of words for the clue hepatology - liver, neurology - ? from the crossword:
TEETH STOMATOLOGY HEART CARDIOLOGY EEG PATE MEDICINE ORGAN FOIE BILE SYNAPSE SPECIALTIES SENSORY EEGS AXON AMA OIL IRON AMI
WordClue
GUMThe flesh around the teeth
OILcod-liver or mineral
HEADmind, brain
MINDbrain
STEMbrain or onion
HARNSbrain
HEARThepatology - liver, cardiology - ?
LIVERneurology - brain, hepatology - ?
TEETHhepatology - liver, stomatology - ?
HELMETbrain bucket
REASONmind, brain
HEPATITISinflammation of the liver tissue
NEUROLOGYliver - hepatology, brain - ?
CARDIOLOGYliver - hepatology, heart - ?
CONCUSSIONtraumatic brain injury
HEPATOLOGYbrain - neurology, liver - ?
HIPPOCAMPUSpart of brain
STOMATOLOGYliver - hepatology, teeth - ?
ENCEPHALITISInflammation of the brain
HEARThepatology - liver, cardiology - ?
TEETHhepatology - liver, stomatology - ?