Change search
ReferencesLink to record
Permanent link

Direct link
Effects of noise sensitivity on sound perception, symptoms and cognition
Umeå University, Faculty of Social Sciences, Department of Psychology.
2016 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Noise sensitivity is a condition characterised by an excessive reaction to harmless levels of sound that would not normally affect typically functioning people. Previous research have found that reactions such as the reduction of attention and concentration as well as the presence of medically unexplained common symptoms such as headaches and fatigue appear in sufferers. The aim of the present study was to investigate whether such a class of sound sensitive individuals are affected by exposure to a potentially unpleasant sound source more than a relatively low sound sensitive group of individuals. Forty adults between 18-54 years of age were exposed to a white noise sound stimulus within a soundproof exposure chamber for 45 minutes. The sound pressure level of the sound varied over the course of the exposure session. The dependent variables of the study were perceived intensity, unpleasantness and effect on concentration, symptoms and cognitive strain. After the exposure session, participants were asked to fill in an online survey that included a 21 item Noise Sensitivity Scale. This was used to group the participants accordingly to a low or high NSS group. The high NSS group compared to the low NSS group had higher ratings for unpleasantness and negative effects on concentration after time point four, at which point the noise stimulus had been introduced. No differences were observed in ratings of Intensity of the noise stimulus between groups. The high NSS group also demonstrated higher ratings for symptoms after the noise stimulus had been introduced. In addition they also demonstrated a lower level of improvement for the cognitive task in comparison to the low NSS group. The findings from this study imply that individuals suffering from hyperacusis can be negatively affected by the presence of annoying sound stimuli. Hyperacusis can mean that sounds can become unpleasant to sufferers as well as potentially affecting their ability to concentrate.

Abstract [sv]

Ljudkänslighet är ett tillstånd som karaktäriseras av en överreaktion på ofarliga ljudnivåer, som normalt inte skulle påverka majoriteten av befolkningen. Tidigare forskning har funnit symptom så som minskad uppmärksamhet och koncentration, samt medicinskt oförklarade symptom som huvudvärk och utmattning förekommer hos drabbade. Syftet med den nuvarande studien var att undersöka hur vida ljudkänsliga personer påverkas mer av en potentiellt obehaglig ljudkälla än en grupp av icke-ljudkänsliga. Fyrtio vuxna mellan 18-54 år exponerades för vitt brus under experimentet. Beroende variabler var upplevd intensitet, obehag, effekt på koncentration, symptom, och kognitiv belastning. Efter experimentet fyllde deltagarna i en online-enkät som inkluderade 21 item Noise Sensitivity Scale. Denna skala användes för att gruppera deltagarna i en hög och en låg NSS-grupp. Jämfört med den låga NSS-gruppen, hade den höga NSS-gruppen högre skattningar av obehag och negativa effekter på koncentrationen efter tidpunkt fyra, då ljud stimulit introducerades. Inga skillnader i intensitets-skattningar hittades mellan grupper. Den höga NSS-gruppen visade högre skattningar av symptom efter att ljud stimulit introducerats. De visade även lägre grad av förbättring på den kognitiva uppgiften jämfört med den låga NSS-gruppen. Denna studies resultat antyder att individer som lider av hyperakusis kan påverkas negativt av störande ljud. Drabbade kan uppfatta ljud som obehagliga, samt potentiellt påverka koncentrationsförmåga negativt.

Place, publisher, year, edition, pages
2016. , 18 p.
Keyword [en]
Noise sensitivity, hyperacusis
National Category
URN: urn:nbn:se:umu:diva-123210OAI: diva2:943862
Available from: 2016-06-29 Created: 2016-06-28 Last updated: 2016-06-29Bibliographically approved

Open Access in DiVA

Effects of noise sensitivity on sound perception, symptoms and cognition(640 kB)12 downloads
File information
File name FULLTEXT01.pdfFile size 640 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Department of Psychology

Search outside of DiVA

GoogleGoogle Scholar
Total: 12 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 13 hits
ReferencesLink to record
Permanent link

Direct link