The Effects of Blast Trauma (Impulse Noise) on Hearing: A Parametric Study

摘要: Abstract : The first and primary goal of this research is to study the effects high level blast wave exposure on conductive sensory structures mammalian ear. This includes use evoked potential measure hearing thresholds tuning curves prior after various exposures. Parameters waves studied include intensity, spectral composition, number impulses repetition rate. Correlations among measures, variables histology are be developed. second objective develop a series generation devices which suitable for laboratory simulation wide spectrum waves. third set software PC-based computer system will interact with crystal capacitive microphones capture analyze Lamont 5-inch diameter shock tube was installed calibrated; interactive analytical developed Thirty animals have been exposed mid-frequency (1.0 kHz) energy-content substantially more hazardous than low- frequency (0.125 variability in measures associated exposures low does not seem affecting Preliminary loss consistent across any given paradigm. slowest rate 10X condition consistently procedures most severe effects.