Masking release in cortical auditory evoked potentials with speech stimulus.

Purpose: To analyze the effect of masking on the Cortical Auditory Evoked Potential with speech stimulus in young adults.

Methods: Fourteen individuals aged between 19 and 28 years of both sexes with no hearing loss participated in the study. The Cortical Auditory Evoked Potential examination was performed with synthetic speech stimulus /ba/ simultaneous to Speech Shaped Noise presented under three conditions: steady noise with a 30 dB SPLep intensity (weak steady noise), steady noise with a 65 dB SPLep intensity o (strong steady noise) and modulated noise with 30 dB SPLep and 65 dB SPLep intensities at 25Hz and modulation period of 40 ms.

The effect of noise on the amplitude and morphology of cortical auditory evoked potentials.

Objective: To analyze the effect of noise on electrophysiological measurements (P1-N1-P2 complex) of cortical auditory evoked potentials in normal hearing individuals of different ages.

Methods: The inclusion criteria for the study were young individuals, adults and elderly, aged 18-75 years, with auditory thresholds up to 25 dB. Participants were separated according to their age group: G1 (18-25 years old), G2 (31-59 years old) and G3 (60-75 years old).

Frequency Following Responses in childhood apraxia of speech.

Objective: to compare the Frequency Following Responses of children with childhood apraxia of speech with typical development children.

Method: this is an observational cross-sectional analytical study approved by Human Research Ethics Committee. Thirty normal hearing children have participated in the study.

Effect of Forward Masking on Frequency Following Response as a Function of Age.

Background: Forward masking occurs when noise is presented before the target signal, making the latter difficult to be perceived. It is related to temporal auditory processing and consequently to speech recognition in noisy environments, which may decline with age. Interest in forward masking has grown in the last years.

Brazilian Portuguese Hearing in Noise Test (HINT): different interpretation criteria for individuals' responses.

Introduction: The ability to recognize the sounds of speech enables an efficient communication. This ability must always be considered when communication disorders are evaluated. In this study, sentences of the Hearing in Noise Test (HINT), originally developed in English and adapted to Brazilian Portuguese, were used to evaluate speech recognition in silence and in the presence of noise.