Scintillating scotoma is the most common visual aura preceding migraine and was first described by 19th-century physician Hubert Airy (1838â1903). It is often confused with ocular migraine, which originates in the eyeball or socket.any variations occur, but scintillating scotoma usually begins as a spot of flickering light near or in the center of the visual field, which prevents vision within the scotoma area.
Spider monkeys live in a biome with many trees. They move around by swinging from tree to tree. Spider monkeys do not build a nest or take shelter in a cave. Instead, they sle â¦ ep high up in a tree on a wide branch. Spider monkeys mostly eat fruits and nuts.
The Japanese spider crab (é«èè¹, takaashigani, lit. tall-footed crab) , Macrocheira kaempferi, is a species of marine crab that lives in the waters around Japan. It has the largest leg span of any arthropod.It is the subject of small-scale fishery which has led to some conservation measures.apanese spider crabs are mostly found off the southern coasts of the Japanese island of HonshÅ«, from Tokyo Bay to Kagoshima Prefecture. Outlying populations have been found in Iwate Prefecture and off Su-ao in Taiwan. Adults can be found at depths between 50 and 600 m (160 and 1,970 ft).