Author
Listed:
- Abdon Francisco Aureliano Netto
- Tiago Zanotelli
- Leonardo Bonato Felix
Abstract
The Auditory Steady-State Response (ASSR) is a type of auditory evoked potential (AEP) generated in the auditory system that can be automatically detected by means of objective response detectors (ORDs). ASSRs are usually registered on the scalp using electroencephalography (EEG). ORD are univariate techniques, i.e. only uses one data channel. However, techniques involving more than one channel – multi-channel objective response detectors (MORDs) - have been showing higher detection rate (DR) when compared to ORD techniques. When ASSR is evoked by amplitude stimuli, the responses could be detected by analyzing the modulation frequencies and their harmonics. Despite this, ORD techniques are traditionally applied only in its first harmonic. This approach is known as one-sample test. The q-sample tests, however, considers harmonics beyond the first. Thus, this work proposes and evaluates the use of q-sample tests using a combination of multiple EEG channels and multiple harmonics of the stimulation frequencies and compare them with traditional one-sample tests. The database used consists of EEG channels from 24 volunteers with normal auditory threshold collected following a binaural stimulation protocol by amplitude modulated (AM) tone with modulating frequencies near 80 Hz. The best q-sample MORD result showed an increase in DR of 45.25% when compared with the best one-sample ORD test. Thus, it is recommended to use multiple channels and multiple harmonics, whenever available.
Suggested Citation
Abdon Francisco Aureliano Netto & Tiago Zanotelli & Leonardo Bonato Felix, 2024.
"Multi-channel and multi-harmonic analysis of Auditory Steady-State Response detection,"
Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 27(3), pages 276-284, February.
Handle:
RePEc:taf:gcmbxx:v:27:y:2024:i:3:p:276-284
DOI: 10.1080/10255842.2023.2181041
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