Now the Hopi Reservation in Black Mesa, Arizona is surrounded by the Navajo reservation and is where the vast majority of the Hopi live today. However, a few Hopi live on the Colorado River Indian Reservation, on the Colorado River in western Arizona.
According to biologists, neocortex is a thin layer structure found in the cerebral cortex area of the brain. The neocortex is also responsible for human senses, the ability to speak and coordinate movement such as walking and lifting.
The neocortex is the most recent part of the mammalian brain to evolve. It is located in the outer cerebral hemisphere and is comprised of six separate layers which enable specific skills. The six-layered neocortex is a unique feature in mammals since it is found in all mammalian brains but not other animal brains.