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Using ERPs for assessing the (sub) conscious perception of noise.

Authors
  • Porbadnigk, Anne K
  • Antons, Jan-N
  • Blankertz, Benjamin
  • Treder, Matthias S
  • Schleicher, Robert
  • Moller, Sebastian
  • Curio, Gabriel
Type
Published Article
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Publication Date
Jan 01, 2010
Volume
2010
Pages
2690–2693
Identifiers
DOI: 10.1109/IEMBS.2010.5626549
PMID: 21096200
Source
Medline
License
Unknown

Abstract

In this paper, we investigate the use of event-related potentials (ERPs) as a quantitative measure for quality assessment of disturbed audio signals. For this purpose, we ran an EEG study (N=11) using an oddball paradigm, during which subjects were presented with the phoneme /a/, superimposed with varying degrees of signal-correlated noise. Based on this data set, we address the question to which degree the degradation of the auditory stimuli is reflected on a neural level, even if the disturbance is below the threshold of conscious perception. For those stimuli that are consciously recognized as being disturbed, we suggest the use of the amplitude and latency of the P300 component for assessing the level of disturbance. For disturbed stimuli for which the noise is not perceived consciously, we show for two subjects that a classifier based on shrinkage LDA can be applied successfully to single out stimuli, for which the noise was presumably processed subconsciously.

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