To all these questions, the experiment tries to answer from March 2019 Acoustic Diagnostics on the International Space Station. Research The Advanced Acoustic Diagnostics monitors the acoustic capabilities of ISS crew members before, during and after the flight to detect possible adverse effects of in-flight noise and microgravity on their acoustic system.
a description
Monitoring the effects of microgravity and acoustic environment on the station as a function of time spent on board is important to detect the warning signs of mild hearing loss. These phenomena can be temporary or permanent and can lead to even greater hearing impairment in future long-term space exploration missions. Microgravity conditions can affect the hydrostatic balance of the body by increasing the pressure of fluid on the head and thus disrupting transmission to the middle ear. pressure abnormalities in the shell Finally, they can damage the structures. The purpose of the Acoustic Diagnostics Survey is to help better understand whether hearing safety is a critical issue in planning future long-term missions and what countermeasures, if any, may be required. However, performing acoustic tests in a noisy environment such as the International Space Station is a sensitive process that requires a specific type of acoustic emission test (AutoAcoustic Emissions. Acoustic emission – OAE). OAEs are sounds produced by our inner ear in response to a sound stimulus aimed at gathering information to send to our brain. Inside the inner ear there are hair cells that act as sensory receptors and respond to external sounds with vibration. This same vibration produces a very faint sound that resonates in the middle ear and can in turn be picked up by special headphones and recorded by the appropriate material. The OAE-based test used in acoustic diagnostic research is an objective test, does not take into account the active involvement of the subject and is not affected by environmental noise because it uses specific auditory stimuli. An OAE test is useful to see how well the inner ear and screw are working. Luca Parmitano undergoes an audiodiagnostic test during his post-Hold mission between July 2019 and February 2020. Rates: ESA / NASA The development of portable devices capable of making accurate acoustic diagnoses in noisy environments could also be useful in occupational medical applications, in noisy industrial environments, for detecting temporary or permanent effects on the hearing skills of workers exposed to noise. Of course, the advanced diagnostic system studied for this research could have various other clinical applications on Earth as well.
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Two crew members take three measurements during the flight at two-month intervals. They also take one measurement before the flight and two after the return. After each session the data is transmitted to Earth. Astronauts must follow a specific sequence of events: calibration of the acoustic resource, OAE testing, and data transmission through a special program. The duration of each session is 75 minutes. The subject opens the laptop and puts on headphones to take sound measurements and uses the Astronaut Everywhere app to answer the questionnaires. Diagram of the receiving system for an intraocular test of Acoustic Diagnostics. Credits: Arturo Moletti European astronaut Matthias Maurer undergoes acoustic diagnostic test on January 24, 2022 Developed by the Department of Physics of the University of Rome Tor Vergata, sponsored by the European Space Agency, the experiment lasts from March 2019 to September 2023 and includes missions 59/60, 61/62, 63, 65, 66 , 67, 68 and 69 .Like her colleagues who preceded and will follow, so Samantha Cristoforetti will take part in this as well as in other experiments that have been planned during her mission in Minerva. In the next two videos, it is possible to constantly observe the ambient noise that characterizes the environments of the USOS (Tropical United States) section from the station. It’s a bit outdated, but the current audio status has not changed much today. In this other video we can see the loudest noise on the Russian side of the station. Sources: NASA? Wikipedia, the free encyclopedia Copyright ISAA 2006-2022 – License
