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Cognitive and neural facets of dissociation in a traumatized population.

ABSTRACT: Dissociative phenomena are frequently experienced by psychologically traumatized people. However, little is known about the cognitive profiles of highly dissociative traumatized individuals, and corresponding patterns of neural connectivity when attentional networks are engaged in the context of emotion. One hundred seventeen traumatized women completed the multiscale dissociation inventory (MDI) and neuropsychological testing; MDI scores were used to classify high- and low-dissociative participants. Forty-six participants also underwent fMRI during performance of an attentional control task that incorporates emotionally distracting images (Affective Number Stroop; ANS). Compared to low-dissociative participants, high-dissociative participants demonstrated better performance on an executive functioning task (F1,111 = 4.64, p = .03), worse performance on a task of visual memory (F1,111 = 9.52, p = .003), and similar performance on all other neuropsychological measures. In addition, dissociative symptoms were negatively correlated with functional connectivity between the amygdala and right anterior insula in response to trauma-related ANS trials. These findings indicate that highly dissociative traumatized people experience difficulties with attentional control in the context of emotionally evocative stimuli, but in a neutral context, their overall cognitive profiles are similar to low-dissociative people. Highly dissociative participants also demonstrated weaker connectivity between the amygdala and insula in response to trauma-relevant images. Evocative, trauma-relevant stimuli appear to disrupt neutral networks involved with attention to salient cues and interoception in highly dissociative traumatized individuals. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

SUBMITTER: Fani N

PROVIDER: S-EPMC6382601 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Cognitive and neural facets of dissociation in a traumatized population.

Fani Negar N King Tricia Z TZ Powers Abigail A Hardy Raven A RA Siegle Greg J GJ Blair Robert J RJ Surapaneni Sindhuja S van Rooij Sanne S Ressler Kerry J KJ Jovanovic Tanja T Bradley Bekh B

Emotion (Washington, D.C.) 20180820 5

Dissociative phenomena are frequently experienced by psychologically traumatized people. However, little is known about the cognitive profiles of highly dissociative traumatized individuals, and corresponding patterns of neural connectivity when attentional networks are engaged in the context of emotion. One hundred seventeen traumatized women completed the multiscale dissociation inventory (MDI) and neuropsychological testing; MDI scores were used to classify high- and low-dissociative particip ...[more]

PMID: 30124316

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Project description:BackgroundThis survey attempts to measure at a national level, exposures to major traumas and the prevalence of common mental health disorders in a low-income dangerous country, highly affected by conflicts: Afghanistan.MethodsTrans-sectional probability survey in general population by multistage sampling in 8 provinces, represented nationwide: 4445 adults (4433 weighted),15 years or older, 81% participation rate. Face to face interviews used specific scales for measuring lifetime exposure (LEC 5 Life Events Checklist) and Post Traumatic Stress Disorder (PTSD Check List), a diagnostic standardized interview: Composite International Diagnostic Interview (Short Form) for. Major Depressive Episode and Generalized Anxiety Disorder, plus scales for suicidal thoughts and attempts and psychological distress (MH5 and RE from SF36).Results52.62% of the population is illiterate, 84,61% of the women do not have any source of income; 70.92% of the population lives in rural areas, 60.62% are below 35 years, 80% lives in very dangerous areas. 64.67% of the Afghan population had personally experienced at least one traumatic event; 78.48% had witnessed one such event. 60.77% of the sample experienced collective violence in relation to war and 48.76% reported four or more events; this very much differs across regions and levels of danger; women are less at risk for trauma except sexual violence, 35 years and above are more at risk than younger. 12-month PTSD prevalence reaches a high rate: 5.34% as MDE 11,71%, whereas GAD 2.78%; suicidal thoughts 2.26%, lifetime suicidal attempts 3.50% are close to reported in other countries. Women have more risk for PTSD (0R = 1.93) and suicidal behaviours (attempts OR = 1.92) than men; the number of events increases risk for MDE, PTSD and suicidal attempts, whereas education is protective. Exposure to different war events produced different mental health effects. People suffering from PTSD have higher risk to report 12-months suicidal ideations and lifetime suicidal attempts.ConclusionOur findings highlight the need to map the extent and the types of mental disorders post conflict; this would help maximise the help to be offered in guiding proper choice of interventions, including education.

Dataset Information

Cognitive and neural facets of dissociation in a traumatized population.

Publications

Cognitive and neural facets of dissociation in a traumatized population.

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