Well the sample was screwing up and cutting out a lot, but I think what you mean could be vibrato? From what I could make out, the part you are referring to was playing high up on the neck with vibratro on the last note of each bar. Vibrato is basically bending the string up and down really fast. It sounds like "WeEeEeW". Best way I can describe it, I'm afraid. :o Take a look around, I'm sure you can find a video to describe it. If that's not it, I don't know what to tell you.