Among
various new methods of brain assessment, such as MRI and PET, Electroencephalography
(EEG) has not lost its significance in cases of space-occupying lesions.
In the opinion of a number of experts in the field, EEG can be used
to present a fuller and clearer picture of brain functions.
The
first record, which described an electric current in the nervous
system, was published by DuBois Reymond in 1849. In 1875, data regarding
the presence of spontaneous electrical activity was obtained from
a dog's brain by R. Caton in Great Britain, and independently by
Danilevsky in Russia. In 1912, Kaufman discovered the connection
between brain potentials and internal brain activity. Subsequently,
the improvement of recording machines further advanced the development
of EEG. The recording of brain potentials was performed in 1913
for the first time by Pravdich-Neminsky in Russia, who isolated
alpha and beta waves (seven types of waves in total).
In
1929, Hans Berger was the first to record bio-potentials from the
intact human scalp. Investigations advanced EEG studies by differentiating
pathological and physiological conditions of the central nervous
system. Major contributions to the development of the science were
made by the following physiologists:
Adrian (1935),
Ecles (1953), and Beritov (1963)
studied the mechanisms of the origin of EEG-rhythms.
G. Walter (1936)
was the first who described slow-wave activity.
D. Shmelkin in Russia
(1936-1964) studied the problems associated with brain tumors of
different localization in EEG.
D.
Lindsley (1940) performed research on EEG in children.
P. Davis (1941) collected
new data on the issue of aging and EEG.
F. Gibbs and E. Gibbs
(1941) presented the first Atlas of EEG.
H. Jasper and
Penfield (1954) worked at the
problem of epilepsy and EEG.
N. Bechtereva (1960)
raised the question of the reflection of supratentorial tumors in
EEG.
E. Zhirmunskaya (1967)
presented the Atlas of EEG in Brain Insult.
N. Mankovsky and
Mintz (1972) studied the reflection of aging
in EEG.
V. Pulatov (1973)
described changes occurred in cases of cerebrovascular strokes with
tumor-like dynamics.
The
following authors in U.S.A. provided data on the clinical practice
of EEG:
T. Warren Blume (1973, 1982) on EEG in children and adults.
E. Niedermeyer and DeSilva Lopez (1985, 1993)
described EEG of patients with different diseases.
F. Dyro (1989) and Hughs John R. (1994)
composed the guide of how to interpret EEG.
Pedley Timothy A. (1990) presented the
Atlas of EEG.
Aminoff M.J. (1990) made an extensive
fundamental research of applying EEG to clinical practice, as well
as of other electrodiagnostic methods of neurology.
Great
contribution in covering these problems was made in the publications
of Annual Meetings of the American Clinical Neurophysiological Society.
Regina
Shmelkina also tries to make her humble contribution to the research
in this field.
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