Hearing investigations

From a neurophysiological point of view, studying of auditory alterations lies in applying a stimulus to those peripherical sensors being involved in hearing and to obtain an answer that could be graphically and quantitatively represented.

Methods of subjective studying, as liminal and supraliminal tonal audiometry as well as logoaudiometry give only an approaching idea of the auditory threshold and some features of the sort of auditory affection.

Mainly in central hypoacusis and in tinnitus, objective methods of studying are applied.

Ear Tympanometry - Impedance Audiometry Electrocochleography
Brainstem Brainstem Auditory Evoked Potentials (BSRA)
Cerebral Cortex

Brain Electrical Activity Mapping (BEAM) under auditory stimulation
Virtual Reality Brain Electrical Activity Mapping (VR-BEAM)
Brain Electric Tomography

Primary auditory cortex
Mapping of Auditory Late Evoked Potentials (BEAM-ALEP)
Brain Electric Tomography of Slow Auditory Evoked Potentials of Brain Cortex

Secondary auditory cortex
Mapping of Cognitive Evoked Potentials (BEAM-P300)
Brain Electric Tomography of Auditory Cognitive Evoked Potentials – P300
Potenciales evocados mapeados

Mapping of auditory evoked potentials of primary and secondary auditory areas

Potenciales evocados mapeados

Brain Electric Tomography: Normal projection of Auditory Potential. Atlas of Talairach


Through these methods, it is possible to establish a topodiagnosis of the affection, its degree and sort of the disfunction in order to settle the suitable therapy.

Our research and publications