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.
There are four different types of spider monkey, all of which are fairly large in size and get to around 50cm tall, plus the spider monkey's tail which can often grow longer than the spider monkey's body. The spider monkey is thought to get it's name from the way the spider monkeys can be seen hanging in the trees.