Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 43 - The Nervous System - Figure 43.8 - Data Analysis: 1

Answer

Please see the image.
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Work Step by Step

The way to get this is to realize that electrical potential add and to pay attention to sign (upward curve is positive and downward curve is negative). So, for example, if one potential is +2 above the baseline (E2) and another is -1 below (I), their sum is +1. Draw a curve for the sum as +1 at its peak.
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