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Disorientation problems in space

­Most of the astronauts have reported that they are dealing with disorientation problem in space where they find very hard to identify the directions, up and down. This kind of problem is termed as “Visual Reorientation Illusions” (VRIs) where astronauts find hard as the floors and walls of the spacecraft exchange suddenly. One of the examples they have experienced that one of their astronaut was feeling like the room was rotating. Other astronaut also observed that they don’t know where they were during a spacewalk.

It is totally different on earth where our brains were informed by the vestibular system and also the inner ear sensors sense the gravity and pass the information to the brain about our body’s disorientation. Researchers at York University’s Centre came to new study that an individual’s direction can be found by how their brain respond to the visual information. It simply means that what feels to the individual like “up” direction may be some other direction depending on process orientation of our brain. Researchers says that this can be very useful to understand how individual use visual information to interpret about their environment while working on tasks.

For this researchers invited participants and use the virtual reality headsets to carry out the study. What they did was lie down tilted so that the visual is in the “up” direction in a virtual environment. This study has gone through different visual orientation cues using body posture and head on trunk orientation. The scenes and physical orientation cues were same for all the participants but what’s different was their reactions. The researchers then divided the participants in two groups, one group was standing vertically as they thought even though they’re lying down and the another one was maintaining realistic idea about their lying position.

The first group was termed as VRI vulnerable as they were feeling like they were moving faster than the second group. The first group will depend more on vision and also found that their visual motion has proved to be more powerful in determining the moving sensations.
To establish or to determine any direction in space astronauts depends on common sense tricks or procedures. Sometimes sense of orientation leads to “space sickness” and the confusion of “up” and” down” leads to headaches, vertigo and sometimes nausea. It is very hard to predict that which astronaut get space sickness because some has very good tolerance level to motion sickness also gets suffered with worst symptoms arriving the space.
They also found that it is very hard to predict that which participant has affected more because of this visual disorientation. Due to the vestibular system brain quickly learns start trusting his eyes and signals and they become more reliable to identify their position. When an individual gets land on moon, mars, asteroids or comets they start clarifying their self-motion with different results.