Read the following excerpt from Edgar Allan Poe’s “Berenice” and answer the question.

I could sit for hours looking at one letter of a word on a page. I could stay, for most of a summer's day, watching a shadow on the floor. I could sit without taking my eyes off a wood fire in winter, until it burnt away to nothing. I could sit for a whole night dreaming about the sweet smell of a flower. I often repeated a single word again and again for hours until the sound of it had no more meaning for me. When I did these things, I always lost all idea of myself, all idea of time, of movement, even of being alive.

Which of the following best describes the indirect characterization of the narrator in this excerpt?

obsessive
inquisitive
patient
perceptive