Neuroimaging findings in primary insomnia

O’Byrne, Jordan; Rosa, M. Berman; Gouin, Jean‐Philippe; Dang‐Vu, Thien Thanh

doi:10.1016/j.patbio.2014.05.013

Cited by 77 publications

(63 citation statements)

References 47 publications

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“…[32][33][34] The excess arousal refers to the exaggerated cortical, somatic, and cognitive activation, which leads to increased sensory information processing and inability to initiate or maintain sleep. 5,35 These studies provided supported evidence that the hyperarousal model is a core predisposing or perpetuating factor of chronic insomnia. 36 Our previous sleep deprivation study found that the female sleep deprivation subjects showed hyperarousal re-activation in the bilateral occipital gyrus compared with the GS-Fs, 21 and our previous regional homogeneity study demonstrated the excessive hyperarousal reactivities in the temporal lobe in the PCPIs, PCPI-Ms and PCPI-Fs, and the excessive hyperarousal reactivation in the occipital cortex in the PCPI-Fs.…”

Section: Discussionmentioning

confidence: 61%

“…4 In spite of a recent increase in neuroimaging research into PCPIs, it has not gleaned a consistent conclusion about its neuropathology after reviewing the neuroimaging studies of primary insomnia, especially with regard to the structural studies of brain alterations. 5 The results of structural studies are either contradictory or required replication. Altena et al found that PCPIs had a smaller volume of reduced gray matter in the precuneus and left orbitofrontal cortex which strongly correlated with the subjective severity of insomnia, but increased gray matter volume was not found.…”

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confidence: 99%

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Gender Differences in Regional Brain Activity in Patients with Chronic Primary Insomnia: Evidence from a Resting-State fMRI Study

Dai

Nie

Liu

et al. 2016

Journal of Clinical Sleep Medicine

115

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Study Objectives: To explore the regional brain activities in patients with chronic primary insomnia (PCPIs) and their sex differences. Methods: Forty-two PCPIs (27 females, 15 males) and 42 good sleepers (GSs; 24 females, 18 males) were recruited. Six PCPIs (3 males, 3 females) were scanned twice by MRI to examine the test-retest reliability. Amplitude of low frequency fluctuation (ALFF) method was used to assess the local brain features. The mean signal values of the different ALFF areas were analyzed with a receiver operating characteristic (ROC) curve. Simple linear regression analysis was performed to investigate the relationships between clinical features and different brain areas. Results: Both female and male PCPIs showed higher ALFF in the temporal lobe and occipital lobe, especially in female PCPIs. Female PCPIs had lower ALFF in the bilateral cerebellum posterior lobe, left dorsolateral prefrontal cortex, and bilateral limbic lobe; however, male PCPIs showed lower ALFF in the left occipital gyrus. The mean signal value of the cerebellum in female PCPIs showed negative correlations with negative emotions. Compared with male PCPIs, female PCPIs showed higher ALFF in the bilateral middle temporal gyrus and lower ALFF in the left limbic lobe. The different areas showed high testretest stability (Clusters of contiguous volumes ≥ 1080 mm 3 with an intraclass correlation coefficient ≥ 0.80) and high degree of sensitivity and specificity. Conclusions: Female PCPIs showed more regional brain differences with higher and lower ALFF responses than male PCPIs. However, they shared analogous excessive hyperarousal mechanism and wide variations in aberrant brain areas. I NTRO DUCTI O NPatients with chronic primary insomnia (PCPIs), who underwent the subjective experience of chronically disturbed sleep, sleep loss, non-refreshing sleep, and heightened arousal in bed with impaired quality of life, showed a decreased ability to disengage from external information processing at sleep onset.1-3 Occasional episodes of insomnia symptoms are reported in half of all adults, while chronic insomnia is prevalent in 10-15% of the adult population. 4 In spite of a recent increase in neuroimaging research into PCPIs, it has not gleaned a consistent conclusion about its neuropathology after reviewing the neuroimaging studies of primary insomnia, especially with regard to the structural studies of brain alterations. 5 The results of structural studies are either contradictory or required replication. Altena et al. found that PCPIs had a smaller volume of reduced gray matter in the precuneus and left orbitofrontal cortex which strongly correlated with the subjective severity of insomnia, but increased gray matter volume was not found. 6 Joo et al. demonstrated significantly reduced gray matter concentrations in the dorsolateral prefrontal and pericentral cortices, superior temporal gyrus, and cerebellum, and decreased gray matter volumes in the medial frontal lobe and middle temporal lobe in PCPIs compared with good sleepers (GSs), ...

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Section: Discussionmentioning

confidence: 61%

mentioning

confidence: 99%

Gender Differences in Regional Brain Activity in Patients with Chronic Primary Insomnia: Evidence from a Resting-State fMRI Study

Dai

Nie

Liu

et al. 2016

Journal of Clinical Sleep Medicine

115

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“…Although results from structural imaging studies (morphometric magnetic resonance imaging [MRI]) vary widely, it appears that neuroanatomical alterations mostly occur in the hippocampus, anterior cingulate cortex (ACC), and orbitofrontal cortex (Altena et al, 2010, Joo et al, 2013, O'Byrne et al, 2014). Functional imaging studies, including single-photon emission computed tomography (SPECT) (Smith et al, 2002), positron emission tomography (PET) (Bonnet and Arand, 1995), and functional MRI (fMRI) (Drummond et al, 2013), have provided evidence of a hyperarousal state in sensory information processing, as well as cognitive and emotional abnormalities in primary insomnia.…”

Section: Introductionmentioning

confidence: 99%

Frequency-dependent changes in local intrinsic oscillations in chronic primary insomnia: A study of the amplitude of low-frequency fluctuations in the resting state

Zhou

Huang

Zhuang

et al. 2017

NeuroImage: Clinical

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New neuroimaging techniques have led to significant advancements in our understanding of cerebral mechanisms of primary insomnia. However, the neuronal low-frequency oscillation remains largely uncharacterized in chronic primary insomnia (CPI). In this study, the amplitude of low-frequency fluctuation (ALFF), a data-driven method based on resting-state functional MRI, was used to examine local intrinsic activity in 27 patients with CPI and 27 age-, sex-, and education-matched healthy controls. We examined neural activity in two frequency bands, slow-4 (between 0.027 and 0.073 Hz) and slow-5 (0.010–0.027 Hz), because blood-oxygen level dependent (BOLD) fluctuations in different low-frequency bands may present different neurophysiological manifestations that pertain to a spatiotemporal organization. The ALFF associated with the primary disease effect was widely distributed in the cerebellum posterior lobe (CPL), dorsal and ventral prefrontal cortex, anterior cingulate cortex, precuneus, somatosensory cortex, and several default-mode sub-regions. Several brain regions (i.e., the right cerebellum, anterior lobe, and left putamen) exhibited an interaction between the frequency band and patient group. In the slow-5 band, increased ALFF of the right postcentral gyrus/inferior parietal lobule (PoCG/IPL) was enhanced in association with the sleep quality (ρ = 0.414, P = 0.044) and anxiety index (ρ = 0.406, P = 0.049) of the CPI patients. These findings suggest that during chronic insomnia, the intrinsic functional plasticity primarily responds to the hyperarousal state, which is the loss of inhibition in sensory-informational processing. Our findings regarding an abnormal sensory input and intrinsic processing mechanism might provide novel insight into the pathophysiology of CPI. Furthermore, the frequency factor should be taken into consideration when exploring ALFF-related clinical manifestations.

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“…At the same time, the mean BP increase for every 10 mmHg. on waking, independently increases the risk of stroke by 48% (p < 0.001), and the level of pulse pressure upon awakening is not a significant factor [82]. The study of night-time heart rate variability may have prognostic value for the stroke prevention.…”

Section: Desynchronosis As a Risk Factor For Strokementioning

confidence: 96%

Features of Circadian Rhythms in Patients with Cerebrovascular Diseases

Костенко¹,

Петрова²

2018

Circadian Rhythm - Cellular and Molecular Mechanisms

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The chapter describes in detail the pathogenetic role of desynchronosis in the development of cerebrovascular diseases (CVD). The data of domestic and foreign literature on the study of desynchronosis are presented. The role of melatonin in the regulation of circadian rhythms (CR) is shown. Pathological changes in CR affect sleep disturbance, emotional and cognitive disorders. It is demonstrated the need of the further study of the prevalence and structure of desynchronosis in patients with CVD. The search of the most significant factors of desynchronosis development in patients with vascular diseases is of great scientific and practical significance. The importance of creating and introducing diagnostic and therapeutic algorithms for chronodiagnostics and chronotherapy of CVD into everyday practical activities. The effectiveness of melatonin for the normalization of sleep and CR in patients with insomnia, acute stroke, depressive disorders is shown. Complex therapy of the patients with CVD taking into account chronobiological disorders allows to eliminate the adverse effect of sleep disorders and CR on the regulation of the cardiovascular system and improve the efficiency of rehabilitation.

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Neuroimaging findings in primary insomnia

Cited by 77 publications

References 47 publications

Gender Differences in Regional Brain Activity in Patients with Chronic Primary Insomnia: Evidence from a Resting-State fMRI Study

Gender Differences in Regional Brain Activity in Patients with Chronic Primary Insomnia: Evidence from a Resting-State fMRI Study

Frequency-dependent changes in local intrinsic oscillations in chronic primary insomnia: A study of the amplitude of low-frequency fluctuations in the resting state

Features of Circadian Rhythms in Patients with Cerebrovascular Diseases

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