[Effect of white noise on the rat auditory cortex ultrastructure].

Changes in ultrastructure of neurones and glial cells of rat auditory cortex were studied after exposure to white noise for 21 days. Appearance of light neurones with peripheral chromatolysis and the increased number of lysosomes, pigment granules and vacuoles were recorded both in the neurones and glial cells. It is concluded that exposure to white noise in chronic experiments is the pathogenic factor which causes destruction in the neurons and glial cells of the auditory cortex.