[Bioelectrical activity of the brain in men with hypogonadism].

Bioelectrical activity of the brain was studied in 51 patients with primary and in 36 with secondary hypogonadism. In the patients examined there was a change of both the amplitude and frequency characteristics of the EEG curves; organization of the basic rhythm was disturbed, and paroxysmal activity discharges appeared. The EEG data in primary hypogonadism pointed to reduction in the reactive properties of the cortex and brain stem; in secondary hypogonadism--diffuse affection of the diencephalic region was testified to.

[The effect of thyroid hormones on inhibition of monosynaptic extensor reflexes].

In thyreotoxic cats with intact or transected spinal cord, intensity of direct and presynaptic inhibition induced by a single volley in a flexor nerve afferent fibers was diminished and the delayed postsynaptic (polysynaptic) inhibition from the skin afferent fibers was more intense than in control cats. The mechanisms for the thyroid hormone effect on the cerebrospinal control of the extensor reflex inhibition, are discussed.