For the first instance, the Louis XV style was inevitable for the fastidious, for the cerebrally morbid.
1816, "pertaining to the brain," from French cérébral (16c.), from Latin cerebrum "the brain" (also "the understanding"), from PIE *keres-, from root *ker- "top of the head" (see horn (n.)). Meaning "intellectual, clever" is from 1929. Cerebral palsy attested from 1824, originally a general term for cases of paralysis that seemed to be traceable to "a morbid state of the encephalon." Later used in a more specific sense from c.1860, based on the work of English surgeon Dr. William Little.
cerebral cer·e·bral (sěr'ə-brəl, sə-rē'-)
Of or relating to the brain or cerebrum.