Of course, not everyone feels that way during a closed-bore MRI, but itâs something to be wary of just in case. What if You Donât Think a Closed-Bore MRI Will Work For You? Thereâs two major reasons that someone might feel like they cannot undergo an MRI in a closed-bore machine.
estivation n 1: (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period [syn: {aestivation}] 2: (botany) the arrangement of sepals and petals in a flower bud before it opens [syn: {aestivation}]
Estivation and Daily Torpor. Estivation is like hibernation in hot weather. Animals that live in deserts or tropical climates practice estivation. It may not occur solely because of food supply issues, as with hibernation, but because the conditions become too hot and dry for the animal to survive.any species of birds use daily torpor to get through colder months. The black-capped chickadee is a good example. Daily torpor (which really ought to be called nightly torpor) is like low-grade short-term hibernation. It only lasts for a few hours, and the reduction in body temperature's just a few degrees.