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| ===Internally sourced sensory input=== | | ===Internally sourced sensory input=== |
| The most fundamental component of any dream or hallucinatory state can be defined as some form perceivable sensory input. This differs from that of everyday sensory input in that it is received from an internal source created by a person's own mind as opposed to an external source within their perceivable surrounding environment. A dreamscape, the internal environment in which a dream takes place, is capable of manifesting itself completely realistically, with convincing and detailed equivalents of any or all of the five senses across varying degrees of vividness and intensity. | | The most fundamental component of any dream or hallucinatory state can be defined as some form perceivable sensory input. This differs from that of everyday sensory input in that it is received from an internal source created by a person's own mind as opposed to an external source within their perceivable surrounding environment. A dreamscape, the internal environment in which a dream takes place, is capable of manifesting itself completely realistically, with convincing and detailed equivalents of any or all of the five senses across varying degrees of vividness and intensity. |
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| These themselves can be broken into 5 differing levels of clarity which are broken down and defined below.
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| Dreams may be broken down into five differing levels of clarity and intensity described below:
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| #'''Imaginative visualization''' - At the lowest level, a person may experience a heightened state of mental visualization that one drifts into when daydreaming or using their imagination. This state results in a level of visualization that is mostly felt internally within the mind's eye instead of being visually perceived. It can be described as a short-term detachment from a person's immediate surroundings, during which a person's contact with reality is blurred and partially substituted by a fantasy. The generation of the details of this internal visualization are partially autonomous in nature, but mostly controlled by the content of one's current thought stream. This level is extremely common and occurs frequently during waking consciousness on a daily basis.
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| #'''Partially defined hypnagogia''' - At this level, the experience of daydreaming and general imagination begins to progressively heighten and form into what is known as "hypnagogia". This is defined as the experience of the transitional state between wakefulness to sleep and generally consists of hearing indistinct noises and seeing faded imagery behind closed eyelids. This level is commonly experienced as a person begins to fall asleep.
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| #'''Fully defined hypnagogia''' - At this level, the vividness and intensity slightly increases and spontaneous imagery becomes fully defined in its appearance and is now seen within a person's direct line of sight under closed eyelids. Alongside this, audible noises, such as fleeting voices, music, and general [[auditory hallucinations]] are often present.
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| #'''Partially defined dreams''' - At this level, the ability to hallucinate increases, with random flashes of spontaneous hallucinatory scenarios beginning to show themselves. The hallucinations longer consist of fleeting imagery on the back of a person's closed eyelids, but become sustained as all-encompassing settings which surround the dreamer in what feels like a breakthrough into an alternate reality. In terms of sensory vividness, the dreams are not completely defined in their appearance or sound. This means that they often display themselves as partially to completely blurred and transparent. Additionally, the dreamer's physical body will often still feel at least partially connected to the real world. Other senses, such as touch, taste, and smell, may be extremely vague or entirely absent.
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| #'''Fully defined dreams''' - At the highest level, all five senses are replicated perfectly as the dream becomes completely realistic and indistinguishable from that of everyday reality in terms of the detail and sensory vividness that they provide. These sensations are equally capable of including both positive sensations, such as sexual orgasm, and negative sensations, such as pain and physical bodily harm.
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| ===Externally sourced sensory input=== | | ===Externally sourced sensory input=== |