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One of the important questions in sleep research is clearly defining the sleep state. This problem arises because sleep was traditionally defined as a state of consciousness and not as a physiological state, [14] [15] thus there was no clear definition of what minimum set of events constitute sleep and distinguish it from other states of partial or no consciousness.
Insomnia is the most common sleep problem, with many adults reporting occasional insomnia, and 10–15% reporting a chronic condition. [113] Insomnia can have many different causes, including psychological stress, a poor sleep environment, an inconsistent sleep schedule, or excessive mental or physical stimulation in the hours before bedtime ...
The meaning of spirituality has developed and expanded over time, and various meanings can be found alongside each other. [1] [2] [3] [note 1] Traditionally, spirituality is referred to a religious process of re-formation which "aims to recover the original shape of man", [note 2] oriented at "the image of God" [4] [5] as exemplified by the founders and sacred texts of the religions of the world.
Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. [1] [11] They may have difficulty falling asleep, or staying asleep for ...
Psychoanalytic dream interpretation is the process of explaining the meaning of the way the unconscious thoughts and emotions are processed in the mind during sleep. There have been a number of methods used in psychoanalytic dream interpretation, including Freud's method of dream interpretation, the symbolic method, and the decoding method.
Electroencephalography has been used for meditation research.. The psychological and physiological effects of meditation have been studied. In recent years, studies of meditation have increasingly involved the use of modern instruments, such as functional magnetic resonance imaging and electroencephalography, which are able to observe brain physiology and neural activity in living subjects ...
Proponents and practitioners of various esoteric forms of spirituality and alternative medicine refer to a variety of claimed experiences and phenomena as being due to "energy" or "force" that defy measurement or experimentation, and thus are distinguished from the scientific form of energy.
The general purpose of rituals is to express some fundamental truth or meaning, evoke spiritual, numinous emotional responses from participants, and/or engage a group of people in unified action to strengthen their communal bonds. The word ritual, when used as an adjective, relates to the noun 'rite', as in rite of passage.