Depression — Effects of Infra- and Ultrasound on the Brain
Citation(s)
Baliatsas C, van Kamp I, van Poll R, Yzermans J Health effects from low-frequency noise and infrasound in the general population: Is it time to listen? A systematic review of observational studies. Sci Total Environ. 2016 Jul 1;557-558:163-9. doi: 10.1016/j.scitotenv.2016.03.065. Epub 2016 Mar 17. Review.
Leventhall, G , Pelmear, P., and Benton, S., 2003, A review of published research on low frequency noise and its effects: Department for Environment, Food and Rural Affairs.
Smagowska B, Pawlaczyk-Luszczynska M Effects of ultrasonic noise on the human body-a bibliographic review. Int J Occup Saf Ergon. 2013;19(2):195-202. Review.
Yoo SS, Kim H, Min BK, Franck E, Park S Transcranial focused ultrasound to the thalamus alters anesthesia time in rats. Neuroreport. 2011 Oct 26;22(15):783-7. doi: 10.1097/WNR.0b013e32834b2957.
Effects of Non-audible Infra- and Ultrasound on Brain Structure and -Function, Cognitive Functions, and Well-being
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
