Publications by authors named "Lisa Eyler"

Purpose Of Review: Findings from the Global Aging & Geriatric Experiments in Bipolar Disorder (GAGE-BD) project, including sociodemographic and clinical information from older age bipolar disorder (OABD) and healthy participants around the globe (approximately N = 5000) were reviewed. Data was collected in multiple waves to create a large integrated dataset.

Recent Findings: BD does not seem to fade with age.

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Background And Hypothesis: For the rapidly growing population of older people living with schizophrenia (PLWS), psychological resilience, or the capacity to adapt to adversity, is an understudied target for improving health. Little is known about resilience and its longitudinal impact on outcomes among PLWS. This study assesses trajectories of resilience-related traits in PLWS and a nonpsychiatric comparison group (NCs) and longitudinal interactions between resilience and health.

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Meditation is a family of ancient and contemporary contemplative mind-body practices that can modulate psychological processes, awareness, and mental states. Over the last 40 years, clinical science has manualized meditation practices and designed various meditation interventions that have shown therapeutic efficacy for disorders including depression, pain, addiction, and anxiety. Over the past decade, neuroimaging has been used to examine the neuroscientific basis of meditation practices, effects, states, and outcomes for clinical and nonclinical populations.

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Background: Aging results in changes in resting state functional connectivity within key networks associated with cognition. Cardiovascular function, physical activity, sleep, and body composition may influence these age-related changes in the brain. Better understanding these associations may help clarify mechanisms related to brain aging and guide interventional strategies to reduce these changes.

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Objectives: Childhood disadvantage is associated with lower general cognitive ability (GCA) and brain structural differences in midlife and older adulthood. However, the neuroanatomical mechanisms underlying childhood disadvantage effects on later-life GCA remain poorly understood. Although total surface area (SA) has been linked to lifespan GCA differences, total SA does not capture the nonuniform nature of childhood disadvantage effects on neuroanatomy, which varies across unimodal and transmodal cortices.

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Article Synopsis
  • The study highlights the phenotypic diversity in early language, intellectual, motor, and adaptive functioning among autistic individuals and suggests using subtype labels to better distinguish their differences beyond the standard autism diagnosis.
  • Researchers identified two distinct autism subtypes based on early LIMA features, using advanced clustering methods on data from 615 children, revealing differing developmental trajectories between these types.
  • The identified subtypes, Type I and Type II, can be reliably detected with 98% accuracy and show significant variations in neuroimaging characteristics and gene expression, indicating their biological differences.
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Background: Chronic pain leads to tau accumulation and hippocampal atrophy, which may be moderated through inflammation. In older men, we examined associations of chronic pain with Alzheimer's disease (AD)-related plasma biomarkers and hippocampal volume as moderated by systemic inflammation.

Methods: Participants were men without dementia.

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Article Synopsis
  • Autism and ADHD are complex neurodevelopmental disorders with overlapping features, but they are rarely studied together, especially regarding sex differences.
  • The study utilized a large neuroimaging dataset to analyze cortical anatomy linked to autism and ADHD, revealing specific patterns in brain structure for each condition.
  • Findings showed that autism presented with greater cortical thickness in specific areas, while ADHD had more global increases in thickness but lower volume and surface area; also, unique patterns were observed in individuals with both conditions.
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In people with schizophrenia (PwS), inflammation and metabolic issues significantly increase morbidity and mortality. However, our ability to understand inflammatory-metabolic mechanisms in this population has been limited to cross-sectional studies. This study involved 169 PwS and 156 non-psychiatric comparisons (NCs), aged 25-65, observed between 2012 and 2022 with 0 to 5 follow-ups post-baseline.

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Background: Early identification of Alzheimer's disease (AD) risk is critical for improving treatment success. Cortical thickness is a macrostructural measure used to assess neurodegeneration in AD. However, cortical microstructural changes appear to precede macrostructural atrophy and may improve early risk identification.

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Objectives: To compare the prevalence of physical morbidities between older aged patients with bipolar disorder (OABD) and non-psychiatric comparisons (NC), and to analyze sex differences in prevalence.

Methods: OABD was defined as bipolar disorder among adults aged ≥50 years. Outcomes analyzed were the prevalence of diseases affecting the cardiovascular, respiratory, gastrointestinal, genitourinary, renal, musculoskeletal, and endocrine systems.

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Language and social symptoms improve with age in some autistic toddlers, but not in others, and such outcome differences are not clearly predictable from clinical scores alone. Here we aim to identify early-age brain alterations in autism that are prognostic of future language ability. Leveraging 372 longitudinal structural MRI scans from 166 autistic toddlers and 109 typical toddlers and controlling for brain size, we find that, compared to typical toddlers, autistic toddlers show differentially larger or thicker temporal and fusiform regions; smaller or thinner inferior frontal lobe and midline structures; larger callosal subregion volume; and smaller cerebellum.

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Article Synopsis
  • The study analyzed the impact of brain reserve, using Brain-Predicted Age Difference scores (Brain-PADs), on executive function from midlife into early old age among 508 men.
  • Results showed that higher brain reserve at age 56 led to both better executive function at that age and a slower decline in executive function over the next 12 years.
  • Findings also indicated that these relationships were not influenced by factors like cognitive reserve or APOE genotype, suggesting a strong genetic basis for the link between brain reserve and cognitive maintenance.
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Multivariate techniques better fit the anatomy of complex neuropsychiatric disorders which are characterized not by alterations in a single region, but rather by variations across distributed brain networks. Here, we used principal component analysis (PCA) to identify patterns of covariance across brain regions and relate them to clinical and demographic variables in a large generalizable dataset of individuals with bipolar disorders and controls. We then compared performance of PCA and clustering on identical sample to identify which methodology was better in capturing links between brain and clinical measures.

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Phenotypic heterogeneity in early language, intellectual, motor, and adaptive functioning (LIMA) features are amongst the most striking features that distinguish different types of autistic individuals. Yet the current diagnostic criteria uses a single label of autism and implicitly emphasizes what individuals have in common as core social-communicative and restricted repetitive behavior difficulties. Subtype labels based on the non-core LIMA features may help to more meaningfully distinguish types of autisms with differing developmental paths and differential underlying biology.

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Objectives: Persistent functional impairment is common in bipolar disorder (BD) and is influenced by a number of demographic, clinical, and cognitive features. The goal of this project was to estimate and compare the influence of key factors on community function in multiple cohorts of well-characterized samples of individuals with BD.

Methods: Thirteen cohorts from 7 countries included = 5882 individuals with BD across multiple sites.

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Background: Cognitive deficits in bipolar disorder (BD) impact functioning and are main contributors to disability in older age BD (OABD). We investigated the difference between OABD and age-comparable healthy comparison (HC) participants and, among those with BD, the associations between age, global cognitive performance, symptom severity and functioning using a large, cross-sectional, archival dataset harmonized from 7 international OABD studies.

Methods: Data from the Global Aging and Geriatric Experiments in Bipolar Disorder (GAGE-BD) database, spanning various standardized measures of cognition, functioning and clinical characteristics, were analyzed.

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Objectives: The Global Aging & Geriatric Experiments in Bipolar Disorder Database (GAGE-BD) project pools archival datasets on older age bipolar disorder (OABD). An initial Wave 1 (W1; n = 1369) analysis found both manic and depressive symptoms reduced among older patients. To replicate this finding, we gathered an independent Wave 2 (W2; n = 1232, mean ± standard deviation age 47.

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Article Synopsis
  • Effective interventions for compassionate care rely on understanding how to assess compassion, and micro-ecological momentary assessment (micro-EMA) offers a real-time method to capture this.
  • A study involving 47 medical students during the COVID-19 pandemic used micro-EMA to track compassion levels, stress, and happiness over multiple 14-day periods, revealing daily compassion didn't change significantly, but individuals showed variability in their compassion levels.
  • The findings indicate that higher compassion is linked to increased happiness and reduced stress, suggesting micro-EMA is a viable tool for measuring compassion dynamics among medical students.
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Objects: Studies of older age bipolar disorder (OABD) have mostly focused on "younger old" individuals. Little is known about the oldest OABD (OOABD) individuals aged ≥70 years old. The Global Aging and Geriatric Experiments in Bipolar Disorder (GAGE-BD) project provides an opportunity to evaluate the OOABD group to understand their characteristics compared to younger groups.

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Article Synopsis
  • Schizophrenia (SZ) is a severe mental illness characterized by symptoms like hallucinations, delusions, and cognitive difficulties, believed to be linked to neurotransmitter dysregulation.
  • Researchers created induced neurons (iNs) from both SZ patients and healthy subjects to study neuropeptides, which are crucial for brain function, using advanced mass spectrometry techniques.
  • The study found differences in neuropeptide secretion, particularly chromogranin B (CHGB), with SZ iNs showing lower levels and unique peptides compared to controls, indicating a potential model for understanding SZ-related neurotransmitter changes.
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Evidence to date indicates that compassion and empathy are health-enhancing qualities. Research points to interventions and practices involving compassion and empathy being beneficial, as well as being salient outcomes of contemplative practices such as mindfulness. Advancing the science of compassion and empathy requires that we select measures best suited to evaluating effectiveness of training and answering research questions.

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Chronic pain leads to tau accumulation and hippocampal atrophy in mice. In this study, we provide one of the first assessments in humans, examining the associations of probable chronic pain with hippocampal volume, integrity of the locus coeruleus (LC)-an upstream site of tau deposition-and Alzheimer's Disease-related plasma biomarkers. Participants were mostly cognitively unimpaired men.

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Background: Autism and attention deficit hyperactivity disorder (ADHD) are heterogeneous neurodevelopmental conditions with complex underlying neurobiology. Despite overlapping presentation and sex-biased prevalence, autism and ADHD are rarely studied together, and sex differences are often overlooked. Normative modelling provides a unified framework for studying age-specific and sex-specific divergences in neurodivergent brain development.

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Purpose: Fitness, physical activity, body composition, and sleep have all been proposed to explain differences in brain health. We hypothesized that an exercise intervention would result in improved fitness and body composition and would be associated with improved structural brain health.

Methods: In a randomized controlled trial, we studied 485 older adults who engaged in an exercise intervention ( n = 225) or a nonexercise comparison condition ( n = 260).

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