Pulse Transit Time (PTT) is the time it takes the pulse pressure waveform to propagate through a length of the arterial tree. The pulse pressure waveform results from the ejection of blood from the left ventricle and moves with a velocity much greater than the forward movement of the blood itself.
With increased vessel wall stiffness (decreased compliance), DELTA V decreases and pulse wave velocity increases. With increased blood pressure, the arterial walls are more strongly stretched and pulse wave velocity increases. Accordingly, for a fixed vessel distance, as the pulse transit time increases the blood pressure decreases.
Many studies use hand dynamometry to objectively quantify exerted effort during experiments most commonly related to the study of motivation.
We’ll focus on this topic and go over everything you need to know to record dynamometry data in the MRI or in the lab. Topics include
– Calibrating for maximum voluntary contraction (MVC)
– Real-time access to the dynamometer signal by third-party applications
– How researchers have used this equipment
– Creating a visual task that gives feedback on exerted effort as well as rewards to the participant
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