 She has experimented with trepanning, drilling a hole into the skull to expose the dura mater, a technique used in some cultures to treat mental illness, and considered by some to provide a calming effect or a higher state of consciousness.Feilding is also a proponent of the use of LSD to trigger long-term improvements in creativity.Born in 1943, Feilding is the youngest child of Basil Feilding, great-grandson of the 7th Earl of Denbigh and the Marquess of Bath, and his wife and cousin, Margaret Feilding.