Chapter 42, Problem 4S

Summary Introduction

To determine:

The reason why Karen needs to drink more caffeinated beverages in order to get the same effect that she earlier used to get with lesser caffeinated beverages.

Introduction:

Habituation is the process when certain cells of the nervous system lose their ability to respond to a particular stimulus due to overexposing or prolonged usage of that stimulus. Some of the nerve cells are more prone to habituation than others.