After reading Stern et al. Pages 178-191, you should be familiar with the following vocabulary as it applies to the topic at hand:

Note: Do not read the last 1.5 pages of the reserve reading (you aren't responsible for the section "Cardiac Output")

S-A node
Directional Fractionation
Cardiotachometer
Heart rate vs. Heart period

1. What standard electrode placement do we use in the ICR to measure heartrate (I, II, or III)? According to the reading, which makes a more pronounced QRS spike? Why might that be the case?

2. What is tonic activity? Explain how it relates to our discussions of within- versus between-subjects experimental design.

3. What are the two most common problems when recording EKG?