Yoshiki Sugiyama

TL;DR: It is concluded that after 16 days of spaceflight, muscle sympathetic nerve responses to upright tilt are normal, and left ventricular stroke volume and Muscle sympathetic nerve activity suggested that sympathetic responses were appropriate for the haemodynamic challenge of upright tilt and were unaffected by spaceflight.

TL;DR: The results suggest that MSNA increases with age in women and men and that the activity is markedly lower in young women than in men but is markedly accelerated with age.

TL;DR: The increased MSNA may play an important role both in thermoregulation and in the maintenance of blood pressure against heat stress, and the increases in MSNA counteracted the lowered blood pressure during heat exposure.

TL;DR: The results suggest that laughing has strong but transient effects on the autonomic nervous system, while weeping or feeling sad has moderate but sustained effects on it.

TL;DR: Exposure of healthy humans to microgravity augments arterial pressure and sympathetic responses to Valsalva straining and differentially reduces vagal, but not sympathetic baroreflex gain.