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Tytuł pozycji:

Cognitive, behavioral, and autonomic correlates of mind wandering and perseverative cognition in major depression

Tytuł :
Cognitive, behavioral, and autonomic correlates of mind wandering and perseverative cognition in major depression
Autorzy :
Ottaviani, Cristina
Shahabi, L.
Tarvainen, M.
Cook, I.
Abrams, M.
Shapiro, D.
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Temat :
ambulatory monitoring
heart rate
rumination
ecological momentary assessment
mental disorders
heart rate variability
major depression disorder
mind wandering
perseverative cognition
behavioral disciplines and activities
Original Research Article
Neurology
Źródło :
Frontiers in Neuroscience
Wydawca :
Frontiers Media S.A., 2015.
Rok publikacji :
2015
Kolekcja :
Frontiers_enriched
Frontiers
Oryginalny identyfikator :
pmc: PMC4283544
pmid: 25601824
Język :
English
ISSN :
1662-453X
1662-4548
DOI :
10.3389/fnins.2014.00433
Autonomic dysregulation has been hypothesized to play a role in the relationships between psychopathology and cardiovascular risk. An important transdiagnostic factor that has been associated with autonomic dysfunction is perseverative cognition (PC), mainly present in Major Depressive Disorder (MDD) in the form of rumination. As the ability to adaptively let our mind wander without ruminating is critical to mental health, this study aimed to examine the autonomic concomitants of functional vs. dysfunctional intrusive thoughts in MDD. Ambulatory heart rate (HR) and variability (HRV) of 18 MDD subjects and 18 healthy controls were recorded for 24 h. Approximately every 30 min during waking hours subjects reported their ongoing thoughts and moods using electronic diaries. Random regression models were performed. Compared to controls, MDD subjects were more often caught during episodes of PC. In both groups, PC required more effort to be inhibited and interfered more with ongoing activities compared to mind wandering (MW) (ps < 0.0001). This cognitive rigidity was mirrored by autonomic inflexibility, as PC was characterized by lower HRV (p < 0.0001) compared to MW. A worse mood was reported by MDD patients compared to controls, independently of their ongoing cognitive process. Controls, however, showed the highest mood worsening during PC compared to being on task and MW. HRV during rumination correlated with self-reported somatic symptoms on the same day and several dispositional traits. MDD subjects showed lower HRV during sleep, which correlated with hopelessness rumination. Results show that PC is associated with autonomic dysfunctions in both healthy and MDD subjects. Understanding when spontaneous thought is adaptive and when it is not may clarify its role in the etiology of mood disorders, shedding light on the still unexplained association between psychopathology, chronic stress, and risk for health.

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