[Contralateral masking effects on cerebral auditory evoked potentials in man: a trial in working practice application in conservative dentistry]

In hearing the masking consists to disturb the information perception which means its reception, codeage and transmission are distorted in the auditory system. The electrophysiological technique by auditory evoked potentials on brain has permitted to study the noise effects with homolateral and contralateral masking method in monaural hearing. The results show that the noise distorts the maximal amplitude of the evoked response and lengthens latency. They do to appear a better resistance of a left ear preference and a superiority of right hemisphere corresponding: they characterize by an important development of auditory evoked potentials with or without masking. As a result for men who are exposed to excessive noise like teachers and students in Odontology, we suggest an inequality protection of auditory system considering the both ear sensibility difference.