University University of ChicagoWhere someone’s gaze falls could indicate almost instantly whether attraction is based on feelings of love or of lust. That automatic judgment can occur in as little as half a second, producing different gaze patterns. [related]Previous research by Cacioppo has shown that different networks of brain regions are activated by love and sexual desire. People tended to visually fixate on the face, especially when they said an image elicited a feeling of romantic love. However, with images that evoked sexual desire, the subjects’ eyes moved from the face to fixate on the rest of the body.