The aim of this research is to investigate the effects of ultrasonic noise exposure on the human auditory system (how it effects hearing). Current international regulations concerning ultrasound exposure differs significantly and are based on scarce and outdated scientific data; hence the motivation for this research. A cohort of 20 audiometrically healthy volunteers will undergo pure tone audiometry (PTA); a standard test for hearing sensitivity, at both pre and post exposure to ultrasonic noise (40kHz for 15 min at 120 dB SPL). A subgroup of 10 subjects will be used as a control group. The resulting audiograms will establish the extent of any recoverable loss in hearing sensitivity known as temporary threshold shifts (TTS).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
16
Group will be exposed to 40kHz ultrasonic noise at 110-120 dB SPL for 15 minutes.
Participants will undergo 2 (pre and post exposure) hearing tests
Ultrahaptics
Bristol, United Kingdom
Temporary Threshold Shifts (TTS)
Mild and recoverable hearing loss in sensitivity due to noise exposure will be checked for statistical significance using paired and independent t-test.
Time frame: Audiometry will be conducted immediately (with 2 hours) from noise exposure
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