The influence of speech stimuli contrast in cortical auditory evoked potentials - Alvarenga, Kátia de Freitas; Vicente, Leticia Cristina; Lopes, Raquel Caroline Ferreira; Silva, Rubem Abrão da; Banhara, Marcos Roberto; Lopes, Andréa Cintra; Corteletti, Lilian Cassia Bórnia Jacob (Brazilian Journal of Otorhinolaryngology, 2013)