You should not always trust your brain. It knows how to play games with you. If any of the mentioned things have happened to you, then you will know how fickle your brain is.

1. Sensory Deprivation

Did you know that sensory deprivation may lead to hallucinations? Do not worry if you get into a situation where you are deprived of sensory sources. When you cannot hear or see anything, your brain may start creating sounds and images of its own. A number of experiments have proved that people who get closed in a room that has special properties to block light and noise, will always experience some level of visual or acoustic hallucinations. This sensation is weird but it does not mean that you are crazy. 

2. False Memories

It is normal for you to feel absolutely sure of what you have experienced so far. Your recollections are related to your past. As a rule, events involve other people too. You can always talk to them and ask whether what you remember is really part of your life. In some instances there is no one who can help us and then we feel confused. When there is not enough evidence and proof, we feel less safe and secure. Then we start looking for facts and proofs that would ground us. Scientists have always been interested in the human memory. They claim that the human brain might start taking in what has never happened. We start filling out the gaps in our memory by creating images.