Electrophysiological assessment of auditory processing

Abstract

Currently, there are different tools for the assessment of auditory processing and its disorders. In addition to behavioral tests and electroacoustic measurements, it has been established that the minimum battery for auditory processing assessment must include electrophysiological examinations that allow to verify the functional state of anatomical structures at the brainstem, the auditory cortex and, broadly, the central auditory nervous system. In literature, the most described electrophysiological tests correspond to complex auditory brainstem responses, auditory middle latency evoked responses, auditory late latency evoked responses and event related evoked potentials, such as mismatch negativity and P300. Although several international organizations such as the American Speech-Language-Hearing Association and the American Academy of Audiology have recommended its use in the diagnostic process of auditory processing disorder and have mentioned its usefulness in the differentiation of associated conditions, there is no conclusive evidence in relation to its clinical applications. The latter has led organizations such as the British Society of Audiology to question its true usefulness in these cases.