Evidence for Distinct Clusters of Diverse Anomalous Experiences and Their Selective Association with Signs of Elevated Cortical Hyperexcitability

Yuen Fong, Chun and Takahashi, Chie and Braithwaite, J. J. (2019) Evidence for Distinct Clusters of Diverse Anomalous Experiences and Their Selective Association with Signs of Elevated Cortical Hyperexcitability. Consciousness and Cognition, 71. pp. 1-17. ISSN 1053-8100

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Abstract

Visual cortical hyperexcitability (VCH) is an underlying factor for aberrant visual experience. Utilizing an exploratory factor analysis (n=300), study 1 developed a revised proxy screening measure for VCH - the Cortical Hyperexcitability index – II(CHi-II). The result revealed a stable 3-factor solution. Study 2 tested both a migraine group and a control group on the CHi-II with a behavioural task that is known to reflect VCH. The migraine group produced significantly elevated scores two factors of CHi-II. Among the non-migraine group, subjects with high VCH also produced significantly elevated scores on CHi-II compared to those with low VCH. These findings support the utility of CHi-II as an indirect proxy measure for signs of VCH and reveal new categorical distinctions for the nature of the anomalous perceptions. These perceptions may well reflect diverse neurocognitive underpinnings leading to advancements in our understanding of aberrations in conscious experience.

Item Type:
Journal Article
Journal or Publication Title:
Consciousness and Cognition
Additional Information:
This is the author’s version of a work that was accepted for publication in Consciousness and Cognition. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Consciousness and Cognition, 71, 2019 DOI: 10.1016/j.concog.2019.03.003
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3200/3204
Subjects:
ID Code:
134509
Deposited By:
Deposited On:
22 Jun 2019 09:03
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Sep 2020 04:28