Subjective Time Dilation

Here is an experiment for you if you have an ipod or similar.

My ipod displays the time remaining for the current song to the nearest second. I find that when I focus on this display, the delay before it updates often appears to be longer than the delay for subsequent updates. The delay cannot actually be longer - in fact it must be shorter. However, it appears longer due to a time dilation effect in my visual perception.

What I noticed tonight, and find quite interesting, is that I do not perceive any distortion in the song. My aural perception is not dilated. Which must lead to a temporal inconsistency between what I perceive visually and aurally.

Which probably has zero practical implications. I guess you get the same effect from the fact that the speeds of light and sound are different.