A dream is a succession of images , id

Adreamis a succession ofimages,ideas,emotions, andsensationsthat usually occur involuntarily in themindduring certain stages ofsleep.[1]The content and purpose of dreams are not fully understood, though they have been a topic of scientific speculation, as well as a subject of philosophical and religious interest, throughoutrecorded history.Dream interpretationis the attempt at drawing meaning from dreams and searching for an underlying message. The scientific study of dreams is calledHYPERLINK “https://en.wikipedia.org/wiki/Oneirology” o “Oneirology”oneirology.[2]
Dreams mainly occur in theHYPERLINK “https://en.wikipedia.org/wiki/REM_sleep” o “REM sleep”rapid-eye movement (REM) stage of sleepwhenbrain activityis high and resembles that of being awake. REM sleep is revealed by continuous movements of the eyes during sleep. At times, dreams may occur during otherstages of sleep. However, these dreams tend to be much less vivid or memorable.[3]The length of a dream can vary; they may last for a few seconds, or approximately 20-30 minutes.[3]People are more likely to remember the dream if they are awakened during the REM phase. The average person has three to five dreams per night, and some may have up to seven;HYPERLINK “https://en.wikipedia.org/wiki/Dream” l “cite_note-4″[4]however, most dreams are immediately or quickly forgotten.[5]Dreams tend to last longer as the night progresses. During a full eight-hour night sleep, most dreams occur in the typical two hours of REM.[6]
Opinions about themeaning of dreamshave varied and shifted through time and culture. Most people today appear to endorse theFreudiantheory ofdreams[citation needed]- that dreams reveal insight into hidden desires and emotions. Other prominent theories include those suggesting that dreams assist in memory formation, problem solving, or simply are a product of random brain activation.[7]The earliest recorded dreams were acquired from materials dating back approximately 5000 years, inMesopotamia, where they were documented onclay tablets. In theGreekandRomanperiods, the people believed that dreams were direct messages from one and/or multipledeities, from deceased persons, and that theypredicted the future. Some cultures practiceddream incubationwith the intention of cultivating dreams that are ofprophecy.[8]
Sigmund Freud, who developed thepsychologicaldiscipline ofpsychoanalysis, wrote extensively about dream theories and their interpretations in the early 1900s.[9]He explained dreams as manifestations of one’s deepest desires and anxieties, often relating torepressedchildhood memoriesor obsessions. Furthermore, he believed that virtually every dream topic, regardless of its content, represented the release of sexual tension.[10]InThe Interpretation of Dreams(1899), Freud developed a psychological technique to interpret dreams and devised a series of guidelines to understand the symbols and motifs that appear in our dreams.

In modern times, dreams have been seen as a connection to theunconscious mind. They range from normal and ordinary to overlysurrealand bizarre. Dreams can have varying natures, such as beingfrightening, exciting,magical,melancholic, adventurous, orsexual. The events in dreams are generally outside the control of the dreamer, with the exception oflucid dreaming, where the dreamer isself-aware.[11]Dreams can at times make acreativethought occur to the person or give a sense ofinspiration.[12]