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The effect of a series of repeated electric shocks (ES) on retention of the conditioned reflexes and the content of free amino acids (AA) was investigated in the rat brain. Following repeated electric shocks, the first of which was applied 24 hours after learning, the rats developed amnesia. The content of brain excitatory AA did not change, whereas that of inhibitory AA, phenylalanine and tyrosine sharply decreased. The content of AA in the blood plasma increased. It is suggested that amnesia was caused by a change in the balance between excitatory and inhibitory AA in favour of the former ones. The changes in the functional state of the hematoencephalic barrier may play a certain part in the origin of the shifts mentioned.
R I Kruglikov, and
L G Polianskaia
April 1967,
Science (New York, N.Y.),
R I Kruglikov, and
L G Polianskaia
June 1967,
Science (New York, N.Y.),
R I Kruglikov, and
L G Polianskaia
February 1964,
Science (New York, N.Y.),
R I Kruglikov, and
L G Polianskaia
April 1982,
Behavioral and neural biology,
R I Kruglikov, and
L G Polianskaia
January 1975,
Nauchnye doklady vysshei shkoly. Biologicheskie nauki,
R I Kruglikov, and
L G Polianskaia
January 1967,
Science (New York, N.Y.),
R I Kruglikov, and
L G Polianskaia
October 1970,
Physiology & behavior,
R I Kruglikov, and
L G Polianskaia
November 1964,
Science (New York, N.Y.),
R I Kruglikov, and
L G Polianskaia
June 1962,
Journal of comparative and physiological psychology,
R I Kruglikov, and
L G Polianskaia
August 1970,
Science (New York, N.Y.),
