Atrial depolarization is identified on the ecg by the

P waves.

Explanation:

The principal diversion is the P wave related with right and left atrial depolarization. Wave of atrial re polarization is imperceptible as a result of low sufficiency.  

Typical P wave is close to 2.5 mm (two-and-a half 1-mm-divisions) tall and under 120 ms (three 1-mm-divisions) in width in any lead.

by looking at someone you know and chat with them or look on something like a painting or anything then the person or bring a book with you and act like you reading something or think about something that you like so you can spaceout and not put attention to what is happening around you .