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Noise & Health

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https://www.readbyqxmd.com/read/29319012/using-auditory-steady-state-responses-for-measuring-hearing-protector-occlusion-effect
#1
Olivier Valentin, Frédéric Laville
INTRODUCTION: The currently available methods for measuring the occlusion effect (OE) of hearing protection devices (HPDs) have limitations. Objective microphonic measurements do not assess bone-conducted sounds directly transmitted to the cochlea. Psychophysical measurements at threshold are biased due to the low-frequency masking effects from test participants' physiological noise and the variability of measurements based on subjective responses. An auditory steady-state responses (ASSRs) procedure is used as a technique that might overcome these limitations...
November 2017: Noise & Health
https://www.readbyqxmd.com/read/29319011/association-between-community-noise-and-adiposity-in-patients-with-cardiovascular-disease
#2
Angel M Dzhambov, Penka D Gatseva, Mariya P Tokmakova, Nikolai G Zdravkov, Stefka V Vladeva, Dolina G Gencheva, Nevena G Ivanova, Krasimir I Karastanev, Emanuela V Vasileva, Aleksandar T Donchev
INTRODUCTION: This study aimed to explore the effect of community noise on body mass index (BMI) and waist circumference (WC) in patients with cardiovascular disease (CVD). MATERIALS AND METHODS: A representative sample of 132 patients from three tertiary hospitals in the city of Plovdiv, Bulgaria was collected. Anthropometric measurements were linked to global noise annoyance (GNA) based on different residential noise annoyances, day-evening-night (Lden), and nighttime (Lnight) road traffic noise exposure...
November 2017: Noise & Health
https://www.readbyqxmd.com/read/29319010/audiometric-notch-and-extended-high-frequency-hearing-threshold-shift-in-relation-to-total-leisure-noise-exposure-an-exploratory-analysis
#3
Wenjia Wei, Stefanie Heinze, Doris G Gerstner, Sandra M Walser, Dorothee Twardella, Christina Reiter, Veronika Weilnhammer, Carmelo Perez-Alvarez, Thomas Steffens, Caroline E W Herr
BACKGROUND: Studies investigating leisure noise effect on extended high frequency hearing are insufficient and they have inconsistent results. The aim of this study was to investigate if extended high-frequency hearing threshold shift is related to audiometric notch, and if total leisure noise exposure is associated with extended high-frequency hearing threshold shift. MATERIALS AND METHODS: A questionnaire of the Ohrkan cohort study was used to collect information on demographics and leisure time activities...
November 2017: Noise & Health
https://www.readbyqxmd.com/read/29319009/cognitive-function-predicts-listening-effort-performance-during-complex-tasks-in-normally-aging-adults
#4
Jennine Harvey, Deborah von Hapsburg, Scott Seeman
PURPOSE: This study examines whether cognitive function, as measured by the subtests of the Woodcock-Johnson III (WCJ-III) assessment, predicts listening-effort performance during dual tasks across the adults of varying ages. MATERIALS AND METHODS: Participants were divided into two groups. Group 1 consisted of 14 listeners (number of females = 11) who were 41-61 years old [mean = 53.18; standard deviation (SD) = 5.97]. Group 2 consisted of 15 listeners (number of females = 9) who were 63-81 years old (mean = 72...
November 2017: Noise & Health
https://www.readbyqxmd.com/read/29319008/cardiovascular-risk-factors-in-noise-exposed-workers-in-china-small-area-study
#5
Xiaoyuan Wu, Daya Yang, Wendong Fan, Chunyue Fan, Guifu Wu
INTRODUCTION: The aim of the present study was to evaluate whether there are changes in cardiovascular risk factors among noise-exposed workers and to explore the possible mechanisms of a long-term noise exposure leading to cardiovascular disease and the sex differences of cardiovascular risk factors in this population. MATERIALS AND METHODS: Two hundred workers engaged in noise-related work, and a control group of 200 nonnoise-exposed workers hospitalized for occupational health examination were assigned into the study...
November 2017: Noise & Health
https://www.readbyqxmd.com/read/28937018/environmental-noise-exposure-modifies-astrocyte-morphology-in-hippocampus-of-young-male-rats
#6
Odelie Huet-Bello, Yaveth Ruvalcaba-Delgadillo, Alfredo Feria-Velasco, Rocío E González-Castañeda, Joaquín Garcia-Estrada, Miguel A Macias-Islas, Fernando Jauregui-Huerta, Sonia Luquin
BACKGROUND: Chronic exposure to noise induces changes on the central nervous system of exposed animals. Those changes affect not only the auditory system but also other structures indirectly related to audition. The hippocampus of young animals represents a potential target for these effects because of its essential role in individuals' adaptation to environmental challenges. OBJECTIVE: The aim of the present study was to evaluate hippocampus vulnerability, assessing astrocytic morphology in an experimental model of environmental noise (EN) applied to rats in pre-pubescent stage...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28937017/the-effects-of-repeated-low-level-blast-exposure-on-hearing-in-marines
#7
Lina R Kubli, Robin L Pinto, Holly L Burrows, Philip D Littlefield, Douglas S Brungart
BACKGROUND: The study evaluates a group of Military Service Members specialized in blast explosive training called "Breachers" who are routinely exposed to multiple low-level blasts while teaching breaching at the U.S. Marine Corps in Quantico Virginia. The objective of this study was to determine if there are any acute or long-term auditory changes due to repeated low-level blast exposures used in training. The performance of the instructor group "Breachers" was compared to a control group, "Engineers"...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28937016/impact-of-usage-of-personal-music-systems-on-oto-acoustic-emissions-among-medical-students
#8
Prasanth G Narahari, Jayashree Bhat, Arivudai Nambi, Anshul Arora
BACKGROUND: Intact hearing is essential for medical students and physicians for communicating with patients and appreciating internal sounds with a stethoscope. With the increased use of (PMSs), they are exposed to high sound levels and are at a risk of developing hearing loss. The effect of long term personal music system (PMS) usage on auditory sensitivity has been well established. Our study has reported the immediate and short term effect of PMS usage on hearing especially among medical professionals...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28937015/chronic-noise-exposure-in-the-spontaneously-hypertensive-rat
#9
Anne T M Konkle, Stephen E Keith, James P McNamee, David Michaud
INTRODUCTION: Epidemiological studies have suggested an association between the relative risk for developing cardiovascular disease (CVD) and long-term exposure to elevated levels of transportation noise. The contention is that this association is largely owing to an increase in stress-related biomarkers that are thought to be associated with CVD. Animal models have demonstrated that acute noise exposure is capable of triggering a stress response; however, similar studies using chronic noise models are less common...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28937014/sex-bias-in-basic-and-preclinical-noise-induced-hearing-loss-research
#10
Amanda Marie Lauer, Katrina Marie Schrode
INTRODUCTION: Sex differences in brain biochemistry, physiology, structure, and function have been gaining increasing attention in the scientific community. Males and females can have different responses to medications, diseases, and environmental variables. A small number of the approximately 7500 studies of noise-induced hearing loss (NIHL) have identified sex differences, but the mechanisms and characterization of these differences have not been thoroughly studied. The National Institutes of Health (NIH) issued a mandate in 2015 to include sex as a biological variable in all NIH-funded research beginning in January 2016...
September 2017: Noise & Health
https://www.readbyqxmd.com/read/28816207/evaluation-of-the-effects-of-various-sound-pressure-levels-on-the-level-of-serum-aldosterone-concentration-in-rats
#11
Parvin Nassiri, Sajad Zare, Mohammad R Monazzam, Akram Pourbakht, Kamal Azam, Taghi Golmohammadi
INTRODUCTION: Noise exposure may have anatomical, nonauditory, and auditory influences. Considering nonauditory impacts, noise exposure can cause alterations in the automatic nervous system, including increased pulse rates, heightened blood pressure, and abnormal secretion of hormones. The present study aimed at examining the effect of various sound pressure levels (SPLs) on the serum aldosterone level among rats. MATERIALS AND METHODS: A total of 45 adult male rats with an age range of 3 to 4 months and a weight of 200 ± 50 g were randomly divided into 15 groups of three...
July 2017: Noise & Health
https://www.readbyqxmd.com/read/28816206/measurement-properties-of-the-chinese-weinstein-noise-sensitivity-scale
#12
Daniel Y T Fong, Naomi Takemura, Pui-Hing Chau, Sarah L Y Wan, Janet Y H Wong
CONTEXT: Noise sensitivity may mediate or moderate the influences of noise exposure on health, and it needs to be reliably evaluated. The 21-item Weinstein's noise sensitivity scale (WNSS) has been the most popular scale for assessing noise sensitivity, but it is not yet available in traditional Chinese. AIMS: This study aimed to conduct linguistic and psychometric performance of WNSS in Hong Kong (HK) Chinese. SETTINGS AND DESIGN: A population-based telephone survey with 1-week follow-up...
July 2017: Noise & Health
https://www.readbyqxmd.com/read/28816205/on-site-and-laboratory-evaluations-of-soundscape-quality-in-recreational-urban-spaces
#13
Lærke C Bjerre, Thea M Larsen, A Josefine Sørensen, Sébastien Santurette, Cheol-Ho Jeong
CONTEXT: Regulations for quiet urban areas are typically based on sound level limits alone. However, the nonacoustic context may be crucial for subjective soundscape quality. AIMS: This study aimed at comparing the role of sound level and nonacoustic context for subjective urban soundscape assessment in the presence of the full on-site context, the visual context only, and without context. MATERIALS AND METHODS: Soundscape quality was evaluated for three recreational urban spaces by using four subjective attributes: loudness, acceptance, stressfulness, and comfort...
July 2017: Noise & Health
https://www.readbyqxmd.com/read/28816204/deep-band-modulated-phrase-perception-in-quiet-and-noise-in-individuals-with-auditory-neuropathy-spectrum-disorder-and-sensorineural-hearing-loss
#14
Hemanth Narayan Shetty, Vishal Kooknoor
CONTEXT: Deep band modulation (DBM) improves speech perception in individuals with learning disability and older adults, who had temporal impairment in them. However, it is unclear on perception of DBM phrases at quiet and noise conditions in individuals with auditory neuropathy spectrum disorder (ANSD) and sensorineural hearing loss (SNHL), as these individuals suffer from temporal impairment. AIM: The aim is to study the effect of DBM and noise on phrase perception in individuals with normal hearing, SNHL, and ANSD...
July 2017: Noise & Health
https://www.readbyqxmd.com/read/28816203/using-mindfulness-to-reduce-the-health-effects-of-community-reaction-to-aircraft-noise
#15
REVIEW
Andrew J Hede
AIM: This paper investigates whether mindfulness-based interventions might ameliorate the detrimental health effects of aircraft noise on residential communities. REVIEW: Numerous empirical studies over the past 50 years have demonstrated the increasing negative impact of aircraft noise on residents worldwide. However, extensive database searches have revealed no published studies on psychological interventions that reduce residents' reactivity to environmental noise...
July 2017: Noise & Health
https://www.readbyqxmd.com/read/28615546/assessment-of-spatial-and-physical-neighborhood-characteristics-that-influence-sound-quality-and-herewith-well-being-and-health
#16
Jeroen Devilee, Elise van Kempen, Wim Swart, Irene van Kamp, Caroline Ameling
Environmental noise and health studies seldom address the positive effect of environments with high acoustic quality. Sound quality, in turn, is influenced by a large number of factors, including the spatial-physical characteristics of a neighborhood. In general, these characteristics cannot be retrieved from existing databases. In this article, we describe the design of an audit instrument and demonstrate its value for gathering information about these characteristics of neighborhoods. The audit instrument used was derived from research in other fields than environmental health...
May 2017: Noise & Health
https://www.readbyqxmd.com/read/28615545/inhibitory-effects-of-low-decibel-infrasound-on-the-cardiac-fibroblasts-and-the-involved-mechanism
#17
Wei Jin, Qin-Qin Deng, Bao-Ying Chen, Zhen-Xing Lu, Qing Li, Hai-Kang Zhao, Pan Chang, Jun Yu, Zhao-Hui Pei
INTRODUCTION: Infrasound is a mechanical vibration wave with frequency between 0.0001 and 20 Hz. It has been established that infrasound of 120 dB or stronger is dangerous to humans. However, the biological effects of low decibel infrasound are largely unknown. The purpose of this study was to investigate the effects of low decibel infrasound on the cardiac fibroblasts. MATERIALS AND METHODS: The cardiac fibroblasts were isolated and cultured from Sprague-Dawley rats...
May 2017: Noise & Health
https://www.readbyqxmd.com/read/28615544/evidence-of-associations-between-brain-derived-neurotrophic-factor-bdnf-serum-levels-and-gene-polymorphisms-with-tinnitus
#18
Aysun Coskunoglu, Seda Orenay-Boyacioglu, Artuner Deveci, Mustafa Bayam, Ece Onur, Arzu Onan, Fethi S Cam
BACKGROUND: Brain-derived neurotrophic factor (BDNF) gene polymorphisms are associated with abnormalities in regulation of BDNF secretion. Studies also linked BDNF polymorphisms with changes in brainstem auditory-evoked response test results. Furthermore, BDNF levels are reduced in tinnitus, psychiatric disorders, depression, dysthymic disorder that may be associated with stress, conversion disorder, and suicide attempts due to crises of life. For this purpose, we investigated whether there is any role of BDNF changes in the pathophysiology of tinnitus...
May 2017: Noise & Health
https://www.readbyqxmd.com/read/28615543/time-course-of-cell-death-due-to-acoustic-overstimulation-in-the-mouse-medial-geniculate-body-and-primary-auditory-cortex
#19
Felix Frohlich, Dietmar Basta, Ira Strübing, Arne Ernst, Moritz Gröschel
It has previously been shown that acoustic overstimulation induces cell death and extensive cell loss in key structures of the central auditory pathway. A correlation between noise-induced apoptosis and cell loss was hypothesized for the cochlear nucleus and colliculus inferior. To determine the role of cell death in noise-induced cell loss in thalamic and cortical structures, the present mouse study (NMRI strain) describes the time course following noise exposure of cell death mechanisms for the ventral medial geniculate body (vMGB), medial MGB (mMGB), and dorsal MGB (dMGB) and the six histological layers of the primary auditory cortex (AI 1-6)...
May 2017: Noise & Health
https://www.readbyqxmd.com/read/28615542/headphone-listening-habits-and-hearing-thresholds-in-swedish-adolescents
#20
Stephen E Widen, Sara Båsjö, Claes Möller, Kim Kähäri
INTRODUCTION: The aim of this study was to investigate self-reported hearing and portable music listening habits, measured hearing function and music exposure levels in Swedish adolescents. The study was divided into two parts. MATERIALS AND METHODS: The first part included 280 adolescents, who were 17 years of age and focused on self-reported data on subjective hearing problems and listening habits regarding portable music players. From this group, 50 adolescents volunteered to participate in Part II of the study, which focused on audiological measurements and measured listening volume...
May 2017: Noise & Health
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