While cgrp does aid the blood-vessel dilation process , its role activating the nerves in the brain appears to be the key when it comes to migraine pain .
There they would harvest kinetic energy from the steady dilation and contraction of blood vessels , providing a source of electricity for pacemakers , insulin pumps and other medical devices-making for a truly powerful breakthrough .
In fact , pupil dilation correlates with arousal so consistently that researchers use pupil size , or pupillometry , to investigate a wide range of psychological phenomena .
A reduction in responsiveness , known as impaired flow-mediated dilation ( fmd ) , is an early sign of arterial damage that often foreshadows cardiovascular disease .
Stimulation of the autonomic nervous system 's sympathetic branch , known for triggering " fight or flight " responses when the body is under stress , induces dilation of the pupils .
Vitamin e also assists the transportation of blood by dilation of blood vessels thereby helping your blood to travel to all parts of the body
此外维生素e还协助血管扩张,帮助人体将血液输送到身体的所有部位。
While pupillometry shows promise as a noninvasive measure of sexual response , they concluded , " not every participant 's sexual orientation was correctly classified " and " an observable amount of variability in pupil dilation was unrelated to the participant 's sexual orientation . "
Inhibition of the parasympathetic system can therefore also cause dilation .
抑制副交感神经系统能够导致瞳孔扩张。
During a migraine attack , a number of changes occur throughout the brain causing dilation of blood vessels ; severe pain ; increased sensitivity to lights , sounds and smells ; nausea and vomiting ; and other symptoms .
当它发作的时候,大脑会发生一系列变化引起血管膨胀,剧烈疼痛,对光、声音和气味敏感,恶心呕吐等症状。
The dilation began about one second before they pressed the button and peaked one to two seconds after .