Bob is at a bar full of music, chatter, and laughter. he gets involved in an interesting conversation with a woman named mona, and he tunes out all the background noise. bob's friend, karen, taps him on the shoulder and asks what song just played on the jukebox. bob says he doesn't know, even though he is sitting right next to the jukebox and is familiar with popular music. this illustrates the role that ________ plays in what is sensed versus what is perceived.