The MRI scanner measures this signal difference and displays the activity as a colored area (Figure 1). Diffusion Tensor Imaging (DTI) is a technique that detects how water travels along the white matter tracts in the brain (Figure 2). White-matter tracts connect different parts of the brain and must be protected during surgery. A dye (contrast agent) may be injected into your blood stream.
Quick Answer. Diving bell spiders of the species Argyroneta aquatica have the ability to swim, and they use this adaptation to live underwater. Although they live and swim in the water, diving bell spiders still breathe air by creating air pockets underwater that they use as homes. Continue Reading.
Spiders. The most common spiders are the daddy long leg spider, brown recluse spider and black widow spider. These can be found in any corner inside or outside that is suitable for spiders to construct their webs. These spiders are more common in garages, crawl spaces, and basements.These areas are less disturbed and tend to harbour more spiders.hat to look for. Like most spiders, the brown recluse spider does not seek to bite people. The bite is usually accidental. The spider crawls into a shoe, into clothing or into a bed and a person then puts on the clothing or lies on the spider in bed.