Open Neuroimaging Journal 12:42-54 (2018)
Authors |
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Abstract |
Background and Objective:
Understanding how trauma impacts the self-structure of individuals suffering from the Post-Traumatic Stress Disorder (PTSD)
symptoms is a complex matter and despite several attempts to explain the relationship between trauma and the “Self”, this issue still
lacks clarity. Therefore, adopting a new theoretical perspective may help understand PTSD deeper and to shed light on the
underlying psychophysiological mechanisms.
Methods:
In this study, we employed the “three-dimensional construct model of the experiential selfhood” where three major components of
selfhood (phenomenal first-person agency, embodiment, and reflection/narration) are related to three Operational Modules (OMs) of
the self-referential brain network. These modules can be reliably estimated through operational synchrony analysis of the
Electroencephalogram (EEG). Six individuals with PTSD symptoms and twenty-nine sex-, age- and demographic- (race, education,
marital status) matched healthy controls underwent resting state EEG signal acquisition with the following estimation of the
synchrony strength within every OM.
Results:
Our results indicate that subjects with PTSD symptoms had significantly stronger EEG operational synchrony within anterior and
right posterior OMs as well as significantly weaker EEG operational synchrony within left posterior OM compared to healthy
controls. Moreover, increased the functional integrity of the anterior OM was positively associated with hyperactivity symptoms,
reduced synchrony of the left posterior OM was associated with greater avoidance, and increased right posterior OM integrity was
positively correlated with intrusion and mood symptoms.
Conclusion:
The results are interpreted in light of the triad model of selfhood and its theoretical and clinical implications (including a new
treatment approach) are discussed.
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Keywords | PTSD EEG Self-referential brain network Default-mode network DMN Subjective sense of self First-person perspective Operational synchrony Functional connectivity Traumatic events |
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References found in this work BETA
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Citations of this work BETA
Selfhood Triumvirate: From Phenomenology to Brain Activity and Back Again.Andrew A. Fingelkurts, Alexander A. Fingelkurts & Tarja Kallio-Tamminen - 2020 - Consciousness and Cognition 86:103031.
Self, Me and I in the Repertoire of Spontaneously Occurring Altered States of Selfhood: Eight Neurophenomenological Case Study Reports.Andrew And Alexander Fingelkurts & Tarja Kallio-Tamminen - 2022 - Cognitive Neurodynamics 16:255–282.
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