Brainstem auditory evoked potential with speech stimulus.

Background: Although clinical use of the click stimulus for the evaluation of brainstem auditory function is widespread, and despite the fact that several researchers use such stimulus in studies involving human hearing, little is known about the auditory processing of complex stimuli such as speech.

Aim: To characterize the findings of the Auditory Brainstem Response (ABR) performed with speech stimuli in adults with typical development.

Method: Fifty subjects, 22 males and 28 females, with typical development, were assessed for ABR using both click and speech stimuli.

Electrophysiological and auditory behavioral evaluation of individuals with left temporal lobe epilepsy.

The purpose of this study was to determine the repercussions of left temporal lobe epilepsy (TLE) for subjects with left mesial temporal sclerosis (LMTS) in relation to the behavioral test-Dichotic Digits Test (DDT), event-related potential (P300), and to compare the two temporal lobes in terms of P300 latency and amplitude. We studied 12 subjects with LMTS and 12 control subjects without LMTS. Relationships between P300 latency and P300 amplitude at sites C3A1,C3A2,C4A1, and C4A2, together with DDT results, were studied in inter-and intra-group analyses.

Linguistic and auditory temporal processing in children with specific language impairment.

Background: Several studies suggest the association of specific language impairment (SLI) to deficits in auditory processing. It has been evidenced that children with SLI present deficit in brief stimuli discrimination. Such deficit would lead to difficulties in developing phonological abilities necessary to map phonemes and to effectively and automatically code and decode words and sentences.