The Effect of Different Stimulation Rates on Brainstem Auditory-Evoked-Potential Responses.

 Auditory-evoked potentials are influenced by several factors, including polarity, filter, stimulus intensity and stimulation rate. The presentation of higher rates of stimuli per second enables the collection of a greater number of responses in a given period of time, promoting a shorter testing time; however, the collected recordings are subject to changes related to wave morphology.  To compare the brainstem auditory-evoked-potential responses with click stimulus with the most commonly used stimulation rates in the clinical practice.

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.