[Effect of noise-induced stress on the quantitative characteristics of rat brain synapses]

Rats were exposed to white noise for 1, 2 and 3 weeks. Electron microscopy was used to examine brain sections. The number of synaptic junctions was calculated in the auditory and motor areas of the brain cortex. It has been shown that there was a significantly incremental increase in the number of synaptic junctions in all the layers of the auditory and motor areas of the brain cortex 1, 2 and 3 weeks after exposure to noise.