I associated it (the word 'Hourloupe', as title of his longest series of work he made exclusively from 1962 to 1974, fh) by assonance with 'hurler' (to shout), hululer (to howl), loup, (wolf), 'Riquet à la Houppe' and the title of Maupassant's book 'Le Horla', inspired by mental distraction.