"And with the women, especially the straight women, mind and genitals seemed scarcely to belong to the same person. The readings from the plethysmograph and the keypad weren’t in much accord. During shots of lesbian coupling, heterosexual women reported less excitement than their vaginas indicated; watching gay men, they reported a great deal less; and viewing heterosexual intercourse, they reported much more."
Two questions immediately suggest themselves. First, is the disconnect between mind and report or between mind and genitals? Are these women aware of being excited by what they're seeing but choosing not to report it, or are they so thoroughly conditioned to see certain forms of arousal as appropriate that they are genuinely unaware of their own physical response?
Second, and more interestingly, if it's the latter (and let's say, for the sake of the argument, that it is) then is it accurate to say that these women are aroused? How do we define sexual excitement? Is it genital or mental? If you do not consciously experience any desire but your plethysmograph shows a positive reading, are you really aroused?
 There's a phrase you don't get to use often