Acoustic Change Complex (ACC) using Speech and Non-speech Stimuli in Temporal auditory processing disorders children

Abstract

ABSTRACT Background: Auditory Temporal Processing (ATP) refers to the ability of the central auditory nervous system to encode and detect subtle changes in acoustic signals necessary for perception of speech and critical for normal auditory development. Though psycho-acoustic tests can efficiently measure this ability, electrophysiological tests are needed when behavioral assessment could not be done or fails to reveal clear pattern of deficits. Cortical auditory evoked potentials (CAEPs) are believed to reflect the neural detection and/or discrimination of sound underlying speech perception. When obtained in response to a stimulus that contains multiple time-varying acoustic changes such as speech, the resulting waveform is referred to as the acoustic change complex (ACC).