Studying Hypnagogic Hallucinations

A recent study published in Dreaming represents an attempt, in the context of the following questions, to examine the hypnagogic hallucinations experienced by one person over several years: (a) Do the hallucinations occur randomly, or follow some kind of trend or pattern? (b) Can the content of the hypnagogic experiences be categorized in types, and how do these relate to existing literature? (c) How do these types change or develop across the years? To find answers to the questions posed, first, the period of time was measured between consequent diary entries. Second, the actual material recorded by the dreamer was assessed using 14 criteria. These assessments were then subject to a P-Technique Factor Analysis. The Factor Analysis extracted four significant factors, labeled “Unusual Bodily Experiences,” “The Intruder,” “Incubus,” and “Fear.” The extracted Factors are well supported by the results of similar studies dealing with random samples. Theoretical implications and consequences of the practical work will be discussed. The present investigation was inspired by the fact that much of the existing research into the topic is based on cross-sectional studies, which are inherently unable to account for individual temporal development in the hypnagogic phenomena in question.

For the abstract

           

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