A high-performance, flexible, and cost-efficient auditory 1 evoked response 2 recording system appropriate for research purposes

Abstract

The recording of auditory evoked responses (AER) is used in hospitals and clinics worldwide for hearing impairments detection and threshold estimation, and in research centers to understand and model the mechanisms involved in the process of hearing. This paper describes a high-performance, flexible, and inexpensive AER recording system. A full description of the hardware and software modules that compose the AER recording system is provided in this article. The performance of this system is evaluated by five experiments with both real and artificially synthesized auditory brainstem response (ABR) and middle latency response (MLR) signals at different intensity levels and stimulation rates. The results of this study point out that the flexibility of the described system is appropriate to record AER signals in several recording conditions.