Amplitude of Evoked Responses to Tones of High Intensity

Abstract

The amplitude of the human cortical evoked response increases in amplitude with increasing intensity of auditory stimulation. At intensities above 70 dB ISO, however, there is a decline in this relationship. This effect was examined in conjunction with stapedius reflexes and other factors in an attempt to determine its cause. The most probable explanation seems to involve the central descending auditory system.