Road and rail traffic noise induce comparable extra-aural effects as revealed during a short-term memory test

作者：Gallasch Eugen^*; Raggam Reinhard B; Cik Michael; Rabensteiner Jasmin; Lackner Andreas; Piber Barbara; Marth Egon

来源：Noise and Health, 2016, 18(83): 206-213.

DOI：10.4103/1463-1741.189243

• Annoyance
• autonomic nervous system
• cardiovascular reactivity
• naturalistic traffic noise
• stress biomarker

To examine extraaural effects as induced by 20min of road (ROAD) and 20min of rail (RAIL) traffic noise with same loudness (75 dBA), a laboratory study was carried out. The study (N=54) consisted of 28 high and 26 low-annoyed healthy individuals as determined by a traffic annoyance test. To control attention, all individuals performed a nonauditory short-term memory test during the noise exposures. A within-subject design, with phases of ROAD, RAIL, and CALM (memory test only), alternated by phases of rest, was defined. Heart rate (HR), systolic blood pressure (sBP), total peripheral resistance (TPR), as well as three autonomic variables, preejection period (PEP), 0.15u0.4Hz high-frequency component of HR variability (HF), and salivary stress biomarker alpha amylase (sAA) were measured. In relation to CALM, HR increased (RAIL 2.1%, ROAD 2.5%), sBP tended to increase against the end of noise exposure, PEP decreased (RAIL 0.7%, ROAD 0.8%), HF decreased (RAIL 3.4%, ROAD 2.9%), and sAA increased (RAIL 78%, ROAD 69%). No differences were found between RAIL and ROAD, indicating that both noise stressors induced comparable extraaural effects. Factor annoyance showed significant during CALM. Here a reduced sympathetic drive (higher PEP values) combined with an increased vascular tone (higher TPR values) was found at the high-annoyed subgroup.

• 出版日期2016-8
• 单位河北医科大学