The Structure and Measurement of Unusual Sensory Experiences in Different Modalities: The Multi-Modality Unusual Sensory Experiences Questionnaire (MUSEQ)
Claire A. A. MitchellMurray T. MayberySuzanna N. Russell-SmithDaniel CollertonGilles E. GignacFlavie Waters
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Hallucinations and other unusual sensory experiences (USE) can occur in all modalities in the general population. Yet, the existing literature is dominated by investigations into auditory hallucinations ('voices'), while other modalities remain under-researched. Furthermore, there is a paucity of measures which can systematically assess different modalities, which limits our ability to detect individual and group differences across modalities. The current study explored such differences using a new scale, the Multi-Modality Unusual Sensory Experiences Questionnaire (MUSEQ). The MUSEQ is a 43-item self-report measure which assesses USE in six modalities: auditory, visual, olfactory, gustatory, bodily sensations, and sensed presence. Scale development and validation involved a total of 1300 participants, which included: 513 students and community members for initial development, 32 individuals with schizophrenia spectrum disorder or bipolar disorder for validation, 659 students for factor replication, and 96 students for test-retest reliability. Confirmatory factor analyses showed that a correlated-factors model and bifactor model yielded acceptable model fit, while a unidimensional model fitted poorly. These findings were confirmed in the replication sample. Results showed contributions from a general common factor, as well as modality-specific factors. The latter accounted for less variance than the general factor, but could still detect theoretically meaningful group differences. The MUSEQ showed good reliability, construct validity, and could discriminate non-clinical and clinical groups. The MUSEQ offers a reliable means of measuring hallucinations and other USE in six different modalities.Keywords:
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Abstract : Even though vision is only one modality humans use to interact with their environment, most people consider it to be the most important. Hearing also is viewed as necessary for interpreting environmental stimuli. In contrast, touch, smell, and taste are largely ignored as being essential to humans' interaction with the environment. The brain seldom processes environmental information sequentially using successive sensory modalities; rather, it simultaneously processes stimuli from several or all of the sensory modalities. Because humans have a limited capacity to receive, hold in working memory, and cognitively process information taken from the environment, the use of one sensory modality to convey information within a system can overload that modality. Multimodal systems can help to alleviate overload for any one modality, and such systems have been favorable in showing that the touch or tactile modality can be used as an independent input modality to convey information to the user, or as a redundant modality to increase information prominence of the visual and auditory modalities. The purpose of this review, which reflects work that occurred before mid-2006, is to discuss the tactile modality, specifically measures of tactile sensitivity for the human body, capabilities and limitations of the tactile modality, and applications of human tactile interfaces. Compared to other areas of the body, tactile research for the head and interfaces for the head is sparse. Therefore, a secondary concern of this review is to highlight this gap in the tactile literature.
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