Exploring noise sensitivity: cardiac correlates of noise sensitivity and the auditory evoked orienting response

Author: Mulgrew, Joseph

Date: 2014-05-12

Publisher: Auckland University of Technology

Type: Thesis

Link to this item using this URL: http://hdl.handle.net/10292/7177

Auckland University of Technology

Abstract

A growing body of evidence suggests Noise Sensitivity (NS) moderates the relationship between noise exposure and stress-related disease. As NS is pronounced within several clinical disorders, its biological mechanisms are of clinical and epidemiological import. Central Neurovisceral Integrative System (NIS, Thayer & Brosschot, 2005) concepts were drawn from to argue that autonomic balance (AB) provides an influential biological mechanism underlying NS and, additionally, that AB and NS influence the Auditory Evoked Orientation Response (AEOR). Baseline Heart Rate Variability (HRV) and NS, as measured by the NS Questionnaire (Schütte, Marks, Wenning, & Griefahn, 2007), were collected from 103 Auckland University of Technology staff and students and were used to analyse the neurovisceral correlates of NS. Furthermore, 60 participants went on to provide cardiac data recorded during and post exposure to auditory stimuli of varying valence, which were used to analyse the influence of autonomic balance and NS on the AEOR. The results of the study provide some limited support for both propositions. Findings are discussed with reference to AB, total regulatory capacity, emotion, and orientating. Although questions are left unanswered, future research directions are postulated that could culminate in the development of both screening and treatment protocols with pronounced clinical applications.

Subjects: Heart rate variability, Noise sensitivity, Orienting response, Autonomic balance, Neurovisceral integrative system

Copyright: OpenAccess