Técnicas de evaluación funcional auditiva y terapias sonoras

Changes in discharge rate and synchrony due to the presence of tinnitus should be reflected in altered ABR waveforms, which would be useful in objectively detecting tinnitus. In fact, some researchers have reported changes in the latencies and/or amplitudes of ABR waves due to tinnitus. However, these slight changes in amplitude and/ or latency are not significant enough for diagnosing purpose. Nevertheless, after reviewing recent developments concerning the basis of tinnitus, Knipper et al. suggested that improved ABR wave analysis should help in the objective diagnosis of tinnitus. Thus, the aim of this work has been to propose a finer analysis of ABR combining Variational Mode Decomposition (VMD) with feature extraction to provide objective cues for the presence of tinnitus. The proposed analysis method has been applied to a cohort of 95 human subjects, 73 without tinnitus and 22 with tinnitus, gathered in four age and sex matched subgroups.