[pt] A presente dissertação faz parte da linha de pesquisa Novos Cenários da Escrita e investiga as relações entre corpo e arte contemporânea, propondo aproximações entre uma ideia de espectro e os conceitos devir-imperceptível (cf. Deleuze e Guattari) e infraleve (cf. Marcel Duchamp). Provocada por algumas obras de artistas contemporâneos (Silueta Series, de Ana Mendieta, The Ruins of Detroit, de Marchand e Meffre, a exposição Contemporáneo 30, de Elba Bairon, e Underlie 04, de Marc Atkins), realiza uma leitura das mesmas, atravessada por esses conceitos. / [en] This dissertation is part of the research line New Scenes for Writing and relates body and contemporary art, proposing similarities between a certain idea of spectrum and two concepts: becoming-imperceptible (as in Deleuze and Guattari) and infrathin (as in Marcel Duchamp). Provoked by a few works from contemporary artists (Siluetas Series, by Ana Mendieta, The Ruins of Detroit, by Marchand and Meffre, Contemporáneo 30, by Elba Barion, and Underlie 04, by Mark Atkins), it makes a reading effort of them, crossed by these concepts.