**5. Conclusions**

The results obtained in this study support the usefulness of free-field stimulation as an objective method for acquiring normality criteria in ABR and ASSR tests, allowing these tests to be performed in patients who cannot be stimulated through the external auditory canal with insertion earphones, such as children with hearing aids or implantable hearing aids.

The modification of the software and hardware of the equipment currently on the market is necessary to obtain ABR and ASSR-MF recordings with free-field stimulation. The thresholds of the recordings obtained with free-field stimulation are superimposable to the thresholds obtained with current conventional insert earphones.
