Columbia subject headings:
Brain chemistry.
Brain--Aging.
Brain--Diseases--Age factors.
Ergot--Physiological effect.
Harvard subject headings:
Brain chemistry.
Brain--Aging
Brain--Diseases--Age factors.
Ergot alkaloids--Physiological effect.
Princeton subject headings:
Brain chemistry.
Brain--Aging.
Brain--Diseases--Age factors.
Ergot--Physiological effect.