We tested the possible occurrence of a neurological insult secondary to high-frequency sound exposure.
Four groups, each containing nine animals, were included in the study as follows: group 1, immersion only, no sound exposure; group 2, immersion with sound exposure; group 3, diving simulation when immersed, no sound exposure; group 4, diving simulation when immersed, with sound exposure.
Sound exposure led to more freezing and less time spent near the active speaker.
The researchers said the average sound exposure during the near two hours was 100.5 decibels and peaked at 144.2 decibels.
Upon sound exposure, the fish increased swimming speed and depth, and swam away from the sound source.
Our data show that the high-frequency sound exposure employed did not contribute to the development of the neurological insult.
As concerns LAeq 24, the magnitude of environmental noise does not influence the daily sound exposure level of inhabitants.
Not only that, but some devices exceed limits imposed by the Occupational Safety and Health Act (OSHA) for human tolerance of sound exposure.
Auditory deprivation and augmented sound exposure can each perturb the maturation of neural computations as well as their underlying synaptic properties.
Rodents have proven to be a useful model system to screen genes, ototoxic compounds and sound exposure protocols that may play a role in hearing loss.
Fish were exposed to 960 pile driving strikes at one of three treatment levels: 216, 213, or 210 dB re 1 μPa2·s cumulative Sound Exposure Level.
