Its temperature was increased from 32°C by 0.3°C/s until the subject pressed a button at the first sensation of pain, which triggered cooling of the thermode by approximately 1.2°C/s.
The volumes are recorded at which first sensation is noticed (sensory threshold), an urge to evacuate is produced (urge sensation), and volume at which pain becomes intolerable (maximum tolerated volume).
At first the sensation is weird to the point of terrifying, but you quickly learn to focus on what you can see rather than what you can't, and this can bring a new dimension to your riding by improving your feel for the varied terrain.
"That's my first sensation of betrayal," she says.
The detection threshold (DT) was defined as the first pricking sensation and the pain threshold (PT) when the pricking sensation was altered to the first sensation of pain.
That is unlikely to happen as long as there are writers as talented as Finnegan to translate the experience for readers who will never know at first hand the sensation of riding a 7ft single-fin board flat-out through the barrel, of watching from the inside as a wave collapses like a falling chandelier, of surfing on LSD or of being ground into the sea bed by a two-wave hold-down.
At first a public sensation, the poor bear spent the next 20 years caged in San Francisco zoos, growing old and mangy before dwindling audiences.
Thin-sliced beef marinated with star anise is so soft it almost doesn't need chewing -- an odd sensation at first, but agreeable.
Ms. Palin, good-looking, confident and proudly conservative, is a sensation at first, commanding huge crowds and donations, but her thin record, her ignorance of the issues and her tangled syntax stymie the momentum.
Expect a small tingling to a slight burning sensation at first.
