[A clinical study on the frequency specificity of the 40-hertz potential]. / Estudio clínico sobre la especificidad frecuencial del potencial de 40 hertz.

In this paper we introduce the results obtained using 40 Hz potentials, with 500 and 1,000 Hz stimuli, in patients with neurosensory hearing loss, with and without preservation of low frequencies. We analyze the relation latency/intensity, the percentage of presence of the waves and their amplitude.

[The 40 hertz potential: a preliminary study]. / El potencial de 40 hertz: estudio preliminar.

In this paper we introduce our preliminary results with 40 Hz. potentials in the study of the auditive pathway in a group of normal subjects. Wave characteristics, amplitude and latency in different frequencies and intensities are analyzed.

[Auditory evoked potentials of the brain stem in the study of tinnitus]. / Los potenciales evocados auditivos de tronco cerebral en el estudio de los acúfenos.

A brain stem evoked response study is carried out, over a group of tinnitus patient. The purpose of this work is to evidence the electrophysiologic indices indicating tinnitus presence. Morphology tracing alterations, variability in the wave latency, also important decreasing in the amplitude of the wave V were found.