82Rb time activity curves (TACs) were used to generate automatically segmental, regional, and global MBF, MFR (stress/rest), and myocardial flow difference (stress-rest) polar maps using FlowQuant© software (Ottawa Heart Institute, Ottawa, CA) [32, 33].
All cases were classified visually, and a custom display software was developed for this purpose, allowing the experts to view slice images (short axis, horizontal and vertical long axis) of the rest, stress, and gated-rest studies, polar plots (rest, stress, rest-stress difference, stress/rest ratio, motion and thickening) and 3D-images.
Resting heart rate (HR) was measured (Polar F4TM or F6TM, Polar Electro Oy, Finland) at the commencement of the testing session.
This is possible because they have an autoinhibited resting state maintained by interacting polar and solvent-excluded residues in abutting arrestin-N and C domains [ 23, 24].
During the course of the revision, a second paper with higher quality data has shown that it is possible to see reflections of polar geometry in resting connectivity (Gravel et al., http://journal.frontiersin.org/Journal/10.3389/fnins.org/Journal/10.3389/fnins
This is noteworthy because tropical fishes typically require six times more oxygen at rest than polar species such as icefishes [ 12].
The R-R intervals (sampling time, 1 msec) during 5 min were measured using the Heart Rate Monitor S810 and Polar S-series Precision Toolkit (Polar, Kempele, Finland), with the subject resting in a supine position.
Small polar surface area corresponded with higher resting affinity and higher use-dependence.
The polar bear also hunts by stalking seals resting on the ice: Upon spotting a seal, it walks to within 100 yards, and then crouches.
Sea ice substratum provides the resting and foraging base for ice seals, walrus, and polar bears [335], [336].
