Depression may be challenging to assess in a patient with dementia. In patients with AD, the presence of depression may range from 6% to 30%, depending on the diagnostic criteria employed (Cummings et al., 1995). The prevalence and course of depression in dementia are controversial, due to several confounding factors.
Astronauts use space shuttles(trasport people and equipment), Space probes (robotic exploration, Spacecrafts (trasport crew, equipment, and other technologies).
Astronauts in the space station research how to live in space, and how future missions to Mars and the moon could be achieved most effectively. Essentially, research about space and the human bodyâs reaction to space is done in a way that it could not be on Earth.