ArticleBrain research2022
Associations between locus coeruleus MRI contrast and physiological responses to acute stress in younger and older adults.
Article in Brain research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 14 citations in OpenAlex.
- Stress, stress systems, and Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Vagus nerve stimulation alters task-evoked pupillary responses in older but not younger adults: A single-blind active sham-controlled crossover trial.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Arousal increases locus coeruleus blood flow, salience-related brain responses, and modulates negative-valence attentional biases.bioRxiv : the preprint server for biology · 2025Article
- Age-related differences in locus coeruleus intensity across a demographically diverse sample.Neurobiology of aging · 2025Article
- Locus coeruleus MRI contrast, cerebral perfusion, and plasma Alzheimer's disease biomarkers in older adults.Neurobiology of aging · 2025Article
- Exploring the Mechanisms of Gastroesophageal Reflux Disease Based on the Brain-Gut Axis Theory.International journal of general medicine · 2025Review
- Different association patterns of emotion regulation and heart rate variability in older and younger adults.Brain communications · 2025Article
- Neuromelanin-sensitive MRI for mechanistic research and biomarker development in psychiatry.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Review
- Multimodal neuroimaging data from a 5-week heart rate variability biofeedback randomized clinical trial.Scientific data · 2023Article
- Isometric handgrip exercise speeds working memory responses in younger and older adults.Psychology and aging · 2023Article
- Increased sympathetic outflow induced by emotional stress aggravates myocardial ischemia-reperfusion injury via activation of TLR7/MyD88/IRF5 signaling pathway.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023Article
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
Acute stress activates the brain's locus coeruleus (LC)-noradrenaline system. Recent studies indicate that a magnetic resonance imaging (MRI)-based measure of LC structure is associated with better cognitive outcomes in later life. Yet despite the LC's documented role in promoting physiological arousal during acute stress, no studies have examined whether MRI-assessed LC structure is related to arousal responses to acute stress. In this study, 102 younger and 51 older adults completed an acute stress induction task while we assessed multiple measures of physiological arousal (heart rate, breathing rate, systolic and diastolic blood pressure, sympathetic tone, and heart rate variability, HRV). We used turbo spin echo MRI scans to quantify LC MRI contrast as a measure of LC structure. We applied univariate and multivariate approaches to assess how LC MRI contrast was associated with arousal at rest and during acute stress reactivity and recovery. In older participants, having higher caudal LC MRI contrast was associated with greater stress-related increases in systolic blood pressure and decreases in HRV, as well as lower HRV during recovery from acute stress. These results suggest that having higher caudal LC MRI contrast in older adulthood is associated with more pronounced physiological responses to acute stress. Further work is needed to confirm these patterns in larger samples of older adults.
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Registered trials
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