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At present, there is no formally approved or generally accepted treatment for age-associated memory impairment (AAMI). Since 1991, when regulatory agencies took a cautious stance on pharmacologic treatments for AAMI, there have been no clinical drug treatment trials for this condition. Regulators are concerned about the safety of a memory-enhancing drug(More)
25.2 Middle Ear Measurements of acoustic impedance at the tympanic membrane at low frequencies (200 Hz) have been useful clinically for detection of middle ear abnormalities. In addition, measurements of changes in the impedance which occur during contractions of the middle ear muscles (e.g., as a reflex response to high intensity sound), have been useful(More)
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