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Slow dissolving of emotional distress contributes to hyperarousal.

ABSTRACT: The mechanisms underlying hyperarousal, the key symptom of insomnia, have remained elusive, hampering cause-targeted treatment. Recently, restless rapid-eye-movement (REM) sleep emerged as a robust signature of sleep in insomnia. Given the role of REM sleep in emotion regulation, we hypothesized that restless REM sleep could interfere with the overnight resolution of emotional distress, thus contributing to accumulation of arousal. Participants (n = 1,199) completed questionnaires on insomnia severity, hyperarousal, self-conscious emotional distress, and thought-like nocturnal mentation that was validated to be a specific proxy for restless REM sleep (selective fragmentation: R = 0.57, P < 0.001; eye movement density: R = 0.46, P < 0.01) in 32 polysomnographically assessed participants. The experience of distress lasting overnight increased with insomnia severity (? = 0.29, P < 10(-23)), whereas short-lasting distress did not (? = -0.02, P = 0.41). Insomnia severity was associated with hyperarousal (? = 0.47, P < 10(-63)) and with the thought-like nocturnal mentation that is specifically associated with restless REM sleep (? = 0.31, P < 10(-26)). Structural equation modeling showed that 62.4% of the association between these key characteristics of insomnia was mediated specifically by reduced overnight resolution of emotional distress. The model outperformed all alternative mediation pathways. The findings suggest that restless REM sleep reflects a process that interferes with the overnight resolution of distress. Its accumulation may promote the development of chronic hyperarousal, giving clinical relevance to the role of REM sleep in emotion regulation in insomnia, depression, and posttraumatic stress disorder.

SUBMITTER: Wassing R

PROVIDER: S-EPMC4780629 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Slow dissolving of emotional distress contributes to hyperarousal.

Wassing Rick R Benjamins Jeroen S JS Dekker Kim K Moens Sarah S Spiegelhalder Kai K Feige Bernd B Riemann Dieter D van der Sluis Sophie S Van Der Werf Ysbrand D YD Talamini Lucia M LM Walker Matthew P MP Schalkwijk Frans F Van Someren Eus J W EJ

Proceedings of the National Academy of Sciences of the United States of America 20160208 9

The mechanisms underlying hyperarousal, the key symptom of insomnia, have remained elusive, hampering cause-targeted treatment. Recently, restless rapid-eye-movement (REM) sleep emerged as a robust signature of sleep in insomnia. Given the role of REM sleep in emotion regulation, we hypothesized that restless REM sleep could interfere with the overnight resolution of emotional distress, thus contributing to accumulation of arousal. Participants (n = 1,199) completed questionnaires on insomnia se ...[more]

PMID: 26858434

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Project description:Institutionalization is an exceptional and temporary measure that occurs when there is a violation of rights; lasting until the family reintegration or, in the impossibility of this, the placement in a substitute family through adoption. Among the main reasons for institutionalization in Brazil are the financial difficulties, abandonment, domestic violence, drug addiction, homelessness of the responsible for the child, sexual abuse, and the loss of parents by death or imprisonment. Although children and adolescents have their rights assured when they are institutionalized, the care provided in these spaces does not include all their needs and demands, which may damage their affective-relational development. Maternal deprivation in the first years of life can be detrimental to the development of these children, if not provided by adequate substitute care. Therefore, to understand which place the institutionalized baby occupies in the imaginary of the social caregivers and, from this, how is established the relationship regarding the care, is of fundamental importance to assess and address the risk factors in child development at this stage of life and in situation of institutionalization. This is an exploratory and descriptive study, developed in a childcare institution, located in the city of São Paulo, Brazil, capable of accommodating up to 20 babies between 0 and 2 years old. Data collection was performed with nine employees, eight social caregivers and one general service assistant who work directly in the care of the institutionalized babies. Drawing-Story with Theme (DS-T) procedures were used. Qualitative analysis was based on Interpretative Phenomenological Analysis. The appreciation of the nine applied Drawing-Story procedures allowed the establishment of three discussion axes representations of baby, baby care, and early separation process. This study concluded that the difficulties that permeate the context of caregivers’ work are the high turnover of institutionalized children, as well as employees, the difficulty of dealing with processes of bonding and breaking bonds and no recognition of the profession. We highlight that the place that these babies occupy in the imaginary of these caregivers influences the bond they establish with the children hence the care offered to the babies. It is also noteworthy that these caregivers exhibited anguish and suffering from the reasons they believed led the children to be institutionalized.

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Slow dissolving of emotional distress contributes to hyperarousal.

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Slow dissolving of emotional distress contributes to hyperarousal.

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