Abstract
Guinea-pigs were exposed to strong stimulation by white noise for 30 minutes to six hours. On examining the spiral ganglion immediately after terminating the acoustic stress, a significant reduction in the cytoplasmic basophilia was found on staining with gallocyanin-chrome alum by Einarson's method, at pH 1.64. No proportionality was found between the duration of the acoustic stress and the degree of cytoplasmic basophilia.