Biomedical subjects
Publications and source records attributed to A Ghazal.
In this paper the visual masking effect is interpreted on the basic of the transient characteristic in two dimensional neuronal networks. The study investigates the suitability of the effect for use as a measurement method. It is shown that the stimulus distribution in space can be scanned at different points in time and that various dynamic characteristic values of the system can be measured.
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The effect of a series of steroid hormones on the pentetrazol convulsing action, hexobarbital narcotic action and hepatic drug metabolizing enzyme activities was determined in rats. All steroid compounds used antagonized the pentetrazol effect: the most potent was cortisone and the least potent testosterone. Glucocorticoids and androgens shortened the hexobarbital sleeping time and increased the hepatic drug metabolizing enzyme activity. Estradiol exhibited the opposite effect, whereas progesterone and desoxycorticosterone did not affect these two parameters.
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