This is a neurobiological reason given for why we dream. This theory was propsed in 1977 by John Allan Hobson who is an Harvard University Psychiatrist. This theory implies that dreams are formed as a result of changes in the activity of neurons that turn on the brainstem in the course of rapid eye movement, this means that chemicals are triggered when there is a shift and change in nerves brainstem as the body and brain rotates between day and night.
