Latency-dependent filtering and compact representation of the complete auditory pathway response
Date
2020Author
de la Torre, Angel
Valderrrama, Joaquin T
Segura, Jose C
Alvarez, Isaac M
Metadata
Show full item recordAbstract
Auditory evoked potentials (AEPs) include the auditory brainstem response (ABR),
middle latency response (MLR) and cortical auditory evoked potentials (CAEPs),
each one covering a speci c latency range and frequency band. For this reason, ABR,
MLR and CAEP are usually recorded separately using di erent protocols. This arti
cle proposes a procedure providing a latency-dependent ltering and down-sampling
of the AEP responses. This way, each AEP component is appropriately ltered, ac7
cording to its latency, and the complete auditory pathway response is conveniently
represented (with the minimum number of samples, i.e., without unnecessary redun9
dancies). The compact representation of the complete response facilitates a compre10
hensive analysis of the evoked potentials (keeping the natural continuity related to the
neural activity transmission along the auditory pathway), which provides a new per12
spective in the design and analysis of AEP experiments. Additionally, the proposed
compact representation reduces the storage or transmission requirements when large
databases are manipulated for clinical or research purposes. The analysis of the AEP
responses shows that a compact representation with 40 samples/decade (around 120
samples) is enough for accurately representing the response of the complete auditory
pathway and provides appropriate latency-dependent ltering. MatLab/Octave code
implementing the proposed procedure is included in the supplementary materials.