Donald S. Finan

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OBJECTIVE This study describes signals generated by .22 and .32 caliber starter pistols in the context of noise-induced hearing loss risk for sports officials and athletes. DESIGN Acoustic comparison of impulses generated from typical .22 and .32 caliber starter pistols firing blanks were made to impulses generated from comparable firearms firing both(More)
OBJECTIVE To characterize the impulse noise exposure and auditory risk for youth recreational firearm users engaged in outdoor target shooting events. The youth shooting positions are typically standing or sitting at a table, which places the firearm closer to the ground or reflective surface when compared to adult shooters. DESIGN Acoustic(More)
OBJECTIVE To characterize the impulse noise exposure and auditory risk for air rifle users for both youth and adults. DESIGN Acoustic characteristics were examined and the auditory risk estimates were evaluated using contemporary damage-risk criteria for unprotected adult listeners and the 120-dB peak limit and LAeq75 exposure limit suggested by the World(More)
The substantial morphological transformations that occur during human development present the nervous system with a considerable challenge in terms of motor control. Variability of skilled motor performance is a hallmark of a developing system. In adults, the jaw stretch reflex contributes to the functional stability of the jaw. We have investigated the(More)
OBJECTIVE In 2009, the U.S. Environmental Protection Agency (EPA) proposed an impulse noise reduction rating (NRR) for hearing protection devices based upon the impulse peak insertion loss (IPIL) methods in the ANSI S12.42-2010 standard. This study tests the ANSI S12.42 methods with a range of hearing protection devices measured in field conditions. (More)
In the United States and other parts of the world, recreational firearm shooting is a popular sport that puts the hearing of the shooter at risk. Peak sound pressure levels (SPLs) from firearms range from ∼140 to 175 dB. The majority of recreational firearms (excluding small-caliber 0.17 and 0.22 rifles and air rifles) generate between 150 and 165 dB peak(More)
PURPOSE This study examined the potential impact of stuttering severity, as measured by the Perceptions of Stuttering Inventory (Woolf, 1967) on acoustic startle responses. METHOD Three groups, consisting of 10 nonstuttering adults, 9 mild stutterering adults, and 11 moderate/severe stutterering adults, were presented with identical 95-dB acoustic stimuli(More)
Compensatory speech motor patterns occur in response to sensory changes in the vocal tract to facilitate natural sounding speech. The purpose of this project was to investigate speech compensation to midline lingual piercing. In the first experiment, two groups of female speakers (one with tongue piercing) produced two sets of speech samples. Tongue(More)
Like many other rhythmic movements, respiratory behaviors arise from a central pattern generator (CPG). Modulation of the respiratory CPG function is requisite to generate the air pressures and flows essential for speech production. The emergence of voluntary respiratory system control and the coordination of respiratory and laryngeal structures likely(More)