IGARASHI, K. Microvibration on the Scalp as a Diagnostic Aid in Orthostatic Dysregulation. Tohoku J. exp. Med., 1971, 105 (1), 11-17 The microvibration (MV) on the scalp of the parietal region in 23 healthy subjects and 16 patients with orthostatic dysregulation (O.D.) ranging from 9 to 11 years of age was recorded at rest in the supine position on the horizontally flat table and in the 20° hea...

BACKGROUND AND PURPOSE Several reports on the elderly population have suggested that orthostatic hypotension is associated with white matter hyperintensities (WMH); however, little information is available on patients with Parkinson's disease (PD). METHODS We analyzed the association blood pressure profiles during tilt table testing with WMH scores in 117 patients with PD. WMH were rated usin...

BACKGROUND Although postural recovery is attentionally demanding in healthy elderly persons, an inability to recover balance due to competition for attentional resources between the postural system and a second task could contribute to falls in older adults with poor balance. This study examined the attentional demands of balance recovery from a mild postural disturbance in balance-impaired eld...

Different from many other species, human beings spend nearly two-thirds of the day in an upright posture. Due to gravity, about 700 to 900 ml of blood shift into the lower body during quiet standing. As a result, central blood volume decreases and this leads to a series of neural-humoral adjustments that aim to maintain the mean arterial pressure during orthostasis. Both the sympathetic nervous...