Neural signatures of adverse childhood experiences : the role of alpha and theta spectral dynamics and phase coherence in cognitive processing

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dc.contributor.advisor Lackner, Christine L.
dc.creator Mariotti, Adam Carlo Gerard
dc.date.accessioned 2024-08-19T12:25:47Z
dc.date.available 2024-08-19T12:25:47Z
dc.date.issued 2024-07-29
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/31968
dc.description 1 online resource (145 pages) : charts (some colour), graphs (some colour)
dc.description Includes abstract and appendices.
dc.description Includes bibliographical references (pages 85-106).
dc.description.abstract Adverse childhood experiences (ACEs) can permanently alter neurological structure and function, increasing the risks for a multitude of health issues. Here, we used auditory Go/NoGo and selective attention paradigms to explore the effects of ACE exposure, type of ACE, and subjective rating of the impact of the ACE(s) on the Error-related Negativity, N100, and N200 event-related potentials (ERPs). We calculated Event-Related Spectral Perturbation (ERSP) and Intertrial Coherence (ITC) at frontal sites on both alpha and theta frequency bands for these ERPs. We found that ERSP and ITC across frequency bands were associated with ACEs, such that when ERSP and ITC decreased, ACE exposure increased across dimensions. Our findings show that spectral power and phase synchrony are disrupted on alpha and theta frequency bands as a likely product of childhood adversity. These disruptions during response inhibition tasks suggest deficits in cognitive control at different stages of the information processing stream. en_CA
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dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcsh Psychic trauma in children
dc.subject.lcsh Theta rhythm
dc.subject.lcsh Alpha rhythm
dc.subject.lcsh Neural networks (Neurobiology)
dc.subject.lcsh Cognitive psychology
dc.subject.other Adverse Childhood Experiences
dc.title Neural signatures of adverse childhood experiences : the role of alpha and theta spectral dynamics and phase coherence in cognitive processing en_CA
dc.type Text en_CA
thesis.degree.name Master of Science in Applied Science
thesis.degree.level Masters
thesis.degree.discipline Psychology
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)
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