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Dreams and reports of dreams are produced in distinct states of consciousness resulting in a delay between the dream event and its recall while awake. During this time lag forgetting may occur resulting in an incomplete report. Forgetting is proportional to the amount of time elapsed between the experience and its recall. [2]
Dreams have a foresight function, enabling us to find a way out of an immediate conflict. [I 2] To reduce the polysemy of the term, Jung sometimes speaks of the "intuitive function" of dreams. [G 3] This prospective function is not in fact a premonitory dream, but teaches the dreamer a path to follow. [2]
The differences in neuronal activity of the brainstem during waking and REM sleep were observed, and the hypothesis proposes that dreams result from brain activation during REM sleep. [1] Since then, the hypothesis has undergone an evolution as technology and experimental equipment has become more precise.
The content and function of dreams have been topics of scientific, philosophical and religious interest throughout recorded history. Dream interpretation , practiced by the Babylonians in the third millennium BCE [ 4 ] and even earlier by the ancient Sumerians , [ 5 ] [ 6 ] figures prominently in religious texts in several traditions, and has ...
Research into dreams includes exploration of the mechanisms of dreaming, the influences on dreaming, and disorders linked to dreaming. Work in oneirology overlaps with neurology and can vary from quantifying dreams to analyzing brain waves during dreaming, to studying the effects of drugs and neurotransmitters on sleeping or dreaming.
There are multiple theories about dream function as well. Some studies claim that dreams strengthen semantic memories. This is based on the role of hippocampal neocortical dialog and general connections between sleep and memory. One study surmises that dreams erase junk data in the brain.
At its most basic, state-dependent memory is the product of the strengthening of a particular synaptic pathway in the brain. [9] A neural synapse is the space between brain cells, or neurons, that allows chemical signals to be passed from one neuron to another.
Why We Sleep: The New Science of Sleep and Dreams (or simply known as Why We Sleep) is a 2017 popular science book about sleep written by Matthew Walker, an English scientist and the director of the Center for Human Sleep Science at the University of California, Berkeley, who specializes in neuroscience and psychology.