Keuning, A.M. (Anne-Marie) (2013) Auditieve aandacht en tinnitus. thesis, Medicine.
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Abstract
Background: The amount of tinnitus related distress is correlated with the amount of attention being dedicated to the tinnitus. Unconsciously, much of attention is being attended towards the tinnitus signal. Attending to a particular frequency decreases detection performance for an auditory target of a different frequency. This is called an attention filter. When subjects are exposed to a clearly audible cue that tells what frequency to expect, the subject responds better to this particular frequency. Objective: The aim of this study was to investigate the best research setting to measure an attention filter. In addition, the aim was to determine if tinnitus patients show a performance peak at their tinnitus frequency when performing a tone-detection task and whether this performance decreases when tinnitus patients attend to a different frequency than their tinnitus frequency (cue tone). Method: First case-control study with healthy subjects was performed to determine the optimal research setting. Subsequently the optimal research setting was used for tinnitus patients and control subjects. The participants performed four listening tasks. Continuous broadband noise was present during the experiments. Target tones were presented in one of two intervals. In two experiments a cue tone was added before the first interval. Statistical analysis was done by using Z-test for proportions. Results: The attention filter was observed for a cue of 1000 Hz, but not for a cue of 820 Hz. A change in level of background noise and a baseline performance of 85% instead of 75% did not make any difference for this attention filter. A baseline performance of 85% provided a better motivation. In contrast to control subjects, tinnitus patients did show an attention filter for a cue of 1000 Hz. Tinnitus patients did not show an attention filter for their tinnitus frequency, nor did they show enhanced mean detection for a cue tone of 0.68*Ft (tinnitus frequency). The performance at tinnitus frequency did not decrease when patients attended to a different frequency (cue tone). Conclusion: In healthy subjects it is possible to perform an increase in attention to a cue tone of 1000 Hz. In contrast to a cue tone of 820 Hz, an attention filter can be witnessed for a cue tone of 1000 Hz. This research does not demonstrate an increased attention at the tinnitus frequency. There is an increase in performance for an octave below tinnitus frequency. The detection performance does not decrease when tinnitus patients attend to a different frequency (cue tone).
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Nijholt, Dr. I. |
| Supervisor name: | Versnel, Dr. H. and UMC Utrecht |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:42 |
| Last Modified: | 25 Jun 2020 10:42 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/406 |
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