Vander's Human Physiology
Vander's Human Physiology
15th Edition
ISBN: 9781259903885
Author: WIDMAIER, Eric P., Vander, Arthur J.
Publisher: Mcgraw-hill Education,
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Chapter 8, Problem 1PI
Summary Introduction

To determine: The approximate duration of each wave in the given recording.

Introduction: Electroencephalography (EEG) is a technique that utilizes electrodes attached to the scalp to detect voltage fluctuations in neurons of the cerebral cortex due to the predominantly summed postsynaptic potentials. The voltage fluctuation in the neurons of the vertebral cortex is recorded as an electroencephalogram.

Expert Solution & Answer
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Explanation of Solution

Refers Fig. 8.1 “EEG patterns are wavelike”. This figure shows a frequency of approximately 20 Hz, that is, 20 waves per second. The duration for each wave can be calculated as follows:

Duration of each wave =120sec=50msec

Conclusion

The approximate duration of each wave in the given recording is 50 msec.

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