Investigating the effect of auditory distractors on the simulated perception of tinnitus in a dichotic listening paradigm
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2018-07-01
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nl
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Tinnitus or phantom auditory perception denotes the continuous sensation of ringing ears. There is evidence that attention plays a crucial role in the subjective experience of tinnitus. Using a dichotic listening paradigm, we will investigate whether a speech stimulus with interesting content, played to the right channel, can divert a healthy subject’s attention from a tinnitus-like stimulus, played to the left channel. To quantify the subject’s response, we will gather both behavioural and electrophysiological measurements. The stimuli in this experiment will be ‘noise-tagged’: we mark the auditory stimuli with a pseudo-random sequence of amplitude modulations so we can determine the attended stimulus. The EEG data that is measured while the subject listened to these noise-tagged stimuli, is then analysed in three steps: temporal and spatial filtering, response prediction and classification. Together with the subjective indication of how distracting the tinnitus-like stimulus was, the computed classification performances are analysed using doubly multivariate repeated measures ANOVA analyses. The results of these analyses did not show a significant effect of the interesting speech stimulus on the two measures of the subject’s attention. A reason for this non-significant effect could be that the experiment did not include enough subjects.
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Faculteit der Sociale Wetenschappen