نتایج جستجو برای: earphone
تعداد نتایج: 175 فیلتر نتایج به سال:
BACKGROUND Chronic classical music was reported to increase parasympathetic activitywhen evaluating heart rate variability (HRV). It is poor in the literature investigation of the acute effects of baroque and heavy metal styles of musical auditory stimulation on HRV. In this study we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of HRV...
The objective of this study was to investigate the effect of stimuli, transducers and gender on the latency and amplitude of acoustic change complex (ACC). ACC is a multiple overlapping P1-N1-P2 complex reflecting acoustic changes across the entire stimulus. Fifteen males and 15 females, in the age range of 18 to 25 (mean=21.67) years, having normal hearing participated in the study. The ACC wa...
In order to provide a control population for a previous investigation of noise-induced hearing loss in a population of female jute weavers (Taylor, Pearson, Mair, and Burns, I965) a survey was conducted on the hearing thresholds of 296 school teachers in Dundee, Scotland, by pure tone earphone listening. This population, although not exposed to industrial noise, is subjected to city noise and d...
OBJECTIVES The effects of chronic music auditory stimulation on the cardiovascular system have been investigated in the literature. However, data regarding the acute effects of different styles of music on cardiac autonomic regulation are lacking. The literature has indicated that auditory stimulation with white noise above 50 dB induces cardiac responses. We aimed to evaluate the acute effects...
To assess the risk of hearing loss among workers using earphones as communication devices at noisy worksites, we compared temporary threshold shifts (TTS) between ears on which workers wore earphones and ears on which no earphones were worn. We measured ambient noise and personal noise exposure as well as noise generated by and passed through earphones by applying frequency analysis at three pi...
AbstractNoise can have an impact on hearing loss. Changes in thresholds due to noise are some temporary but others potentially permanent. The of loss must be controlled so the quality life will not decrease. A cross-sectional study assess and increasing knowledge about noise-induced was implemented with lectures, discussions a pre-test before activity post-test after development. polling conduc...
OBJECTIVES The aim of this study was to evaluate anatomic/audiologic outcomes of cartilage tympanoplasty with island technique and compare the results with the results of temporalis fascia tympanoplasty. PATIENTS AND METHODS The charts of 40 patients who underwent surgery for primary type 1 tympanoplasty either with perichondrium-cartilage (12 males, 11 females; mean age 29.7 years; range 12 ...
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