Principal among these [levels of regulation] is the
regulation of the erotic, both in the specific
sense of the regulation of sexuality, and in the
more generalized notion that the very act of looking
at cinema depends on the scopophilic
instinct: that is, the eroticized love of looking which spectacle
plays upon and satisfies, very often through the
display of the human body.
from Maltby and Craven, Hollywood Cinema 340.