Dreams occur mainly during the phase of REM sleep in which brain activity is more intense. Dreams can also occur during other phases of sleep. However, these dreams tend to be much less vivid and memorable. The length of a dream can vary, in fact, it can last from a few seconds to about 20-30 […]
During the first 90 minutes of sleep, you move from light sleep to deep sleep. Then, you enter Rapid eye movement sleep (REM); the stage during which dreams occur. During this phase, the motor neurons and the release of certain neurotransmitters, the monoamines (norepinephrine, serotonin and histamine) are inhibited, which causes muscle weakness, rapid eye […]
According to a study published in 2008, people aged under 25 reported that they almost never have dreamed in black and white, while those aged over 55 said they dream in black and white about quarter of the time, according to the study, this is due to the television passing programs in black and white.
There is a strong correlation between the time span of the REM sleep (the stage in which dreams occur) and the depth of the depression in a person. The more a person spends an abnormally prolonged phase of REM sleep which should represent about 20% of total sleep, the more negative emotions are issued and […]