[Monoamine oxidase activity and noradrenaline concentration in tissue from symmetrical areas of cerebral cortex].

Tissue of the human brain cortex was obtained for investigations in neurosurgical operations and in autopsy. Homogenates of the tissue of symmetrical visual, auditory and skin areas were similar in the monoamine oxidase activity and adrenalin content whereas homogenates of the motor cortex tissue differed from each other in these parameters. Samples of tissue of the written language center were asymmetrical in their monoamine oxidase activity.