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      Exploring the Relationship between Noise Sensitivity, Annoyance and Health-Related Quality of Life in a Sample of Adults Exposed to Environmental Noise

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          Abstract

          The relationship between environmental noise and health is poorly understood but of fundamental importance to public health. This study estimated the relationship between noise sensitivity, noise annoyance and health-related quality of life in a sample of adults residing close to the Auckland International Airport, New Zealand. A small sample ( n = 105) completed surveys measuring noise sensitivity, noise annoyance, and quality of life. Noise sensitivity was associated with health-related quality of life; annoyance and sleep disturbance mediated the effects of noise sensitivity on health.

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          Most cited references44

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          Annoyance from transportation noise: relationships with exposure metrics DNL and DENL and their confidence intervals.

          We present a model of the distribution of noise annoyance with the mean varying as a function of the noise exposure. Day-night level (DNL) and day-evening-night level (DENL) were used as noise descriptors. Because the entire annoyance distribution has been modeled, any annoyance measure that summarizes this distribution can be calculated from the model. We fitted the model to data from noise annoyance studies for aircraft, road traffic, and railways separately. Polynomial approximations of relationships implied by the model for the combinations of the following exposure and annoyance measures are presented: DNL or DENL, and percentage "highly annoyed" (cutoff at 72 on a scale of 0-100), percentage "annoyed" (cutoff at 50 on a scale of 0-100), or percentage (at least) "a little annoyed" (cutoff at 28 on a scale of 0-100). These approximations are very good, and they are easier to use for practical calculations than the model itself, because the model involves a normal distribution. Our results are based on the same data set that was used earlier to establish relationships between DNL and percentage highly annoyed. In this paper we provide better estimates of the confidence intervals due to the improved model of the relationship between annoyance and noise exposure. Moreover, relationships using descriptors other than DNL and percentage highly annoyed, which are presented here, have not been established earlier on the basis of a large dataset.
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            Psychosomatics and psychopathology: looking up and down from the brain.

            The autonomic nervous system (ANS) plays a role in a wide range of somatic and mental diseases. Using a model of neurovisceral integration, this article describes how autonomic imbalance and decreased parasympathetic tone in particular may be the final common pathway linking negative affective states and conditions to ill health. The central nervous system (CNS) network that regulates autonomic balance (central autonomic network, CAN) is closely related and partially overlaps with networks serving executive, social, affective, attentional, and motivated behavior (anterior executive region, AER; and Damasio's [Damasio, A.R., 1998. Emotion in the perspective of an integrated nervous system. Brain Res. Rev. 26, 83-86.] 'emotion circuit'). A common reciprocal inhibitory cortico-subcortical neural circuit serves to regulate defensive behavior, including autonomic, emotional and cognitive features. This inhibitory cortico-subcortical circuit may structurally, as well as functionally, link psychological processes with health-related physiology. When the prefrontal cortex is taken 'offline' for whatever reason, parasympathetic inhibitory action is withdrawn and a relative sympathetic dominance associated with disinhibited defensive circuits is released, which can be pathogenic when sustained for long periods. This state is indicated by low heart rate variability (HRV), which is a marker for low parasympathetic activation and prefrontal hypoactivity. Consistent with this, HRV is associated with a range of psychological and somatic pathological conditions, including immune dysfunction. Finally, we discuss supportive evidence from recent studies of the reflexive startle blink, attention and working memory, which shows that low HRV predicts hypervigilance and inefficient allocation of attentional and cognitive resources.
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              Effect of personal and situational variables on noise annoyance in residential areas

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                Author and article information

                Journal
                Int J Environ Res Public Health
                101238455
                International Journal of Environmental Research and Public Health
                Molecular Diversity Preservation International (MDPI)
                1661-7827
                1660-4601
                October 2010
                11 October 2010
                : 7
                : 10
                : 3579-3594
                Affiliations
                [1 ] Auckland University of Technology, Private Bag 92006, Auckland, 1142 New Zealand; E-Mail: renmat01@ 123456aut.ac.nz
                [2 ] University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; E-Mails: d.welch@ 123456auckland.ac.nz (D.W.); k.dirks@ 123456auckland.ac.nz (K.N.D.)
                Author notes
                [* ]Author to whom correspondence should be addressed; E-Mail: daniel.shepherd@ 123456aut.ac.nz ; Tel.: +64-9-921-9999; Fax: +64-9-921-9780.
                Article
                ijerph-07-03579
                10.3390/ijerph7103580
                2996181
                21139850
                c35b1c90-0aa8-4992-b69b-32b938298f6e
                © 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

                This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                : 19 August 2010
                : 30 August 2010
                : 28 September 2010
                Categories
                Article

                Public health
                noise sensitivity,noise,annoyance,health-related quality of life
                Public health
                noise sensitivity, noise, annoyance, health-related quality of life

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