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Document Type

Research

Abstract

The rhythmical electrical potential waves recorded from the human brain have been classified by their discoverer, Berger2 into two types: alpha-waves, and beta-waves. This classification is made on the basis of the duration and amplitude of the waves. Waves having a duration of about .10 sec. and an amplitude of about 20 microvolts fall into the category of alpha-waves. Waves having a duration of about .04 sec. and an amplitude of about 10 microvolts make up the beta-waves. In general, the beta-wave is formed on the sides of the larger and more predominant alpha-wave.

Publication Date

1936

Journal Title

Proceedings of the Iowa Academy of Science

Volume

43

Issue

1

First Page

337

Last Page

337

Copyright

©1936 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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