Articles tagged with Midbrain
Researchers found significant loss of neurons in the locus coeruleus, a second critical region involved in arousal and muscle tone regulation. This finding suggests an immune-mediated process and challenges the prevailing explanation for narcolepsy with cataplexy.
Researchers investigated brain mechanisms that maintain balance between intimidation and physical aggression in mice. Projections from the lateral hypothalamus to the dorsal raphe nucleus play a critical role in preserving this balance. Increasing pathway activity led to increased attacks, while inhibiting it decreased attack bites.
A recent study by researchers at the University of California, Riverside, found that a specific brain region known as the caudate nucleus is strongly linked to physical strength in older adults. The discovery could help detect and prevent frailty before it begins.
Scientists at Gladstone Institutes discovered that overactivated dopamine neurons degenerate and die, leading to Parkinson's disease symptoms. Chronic activation of these cells can cause cell death, potentially triggered by genetic, environmental toxins, and compensating for lost neurons.
Researchers at The University of Osaka have identified the parvocellular red nucleus as a critical brain region involved in motor learning during reaching movements. This discovery has significant implications for developing new rehabilitation methods targeting precise brain regions to aid recovery in patients with motor impairments.
Researchers identified a dual learning system in the brain that enables habits to form and provides a scientific basis for breaking bad habits. The study suggests that replacing an action consistently can lead to the APE system forming a new habit, offering a potential strategy for overcoming addictions.
A University of Ottawa-led study reveals that serotonin neurons are connected and interact with each other, controlling serotonin release in specific regions of the brain. This complex system has implications for understanding decision-making and developing targeted therapeutics for mood disorders.
Researchers have identified three cell types in the median raphe nucleus that control decisions on perseverance, exploration, and disengagement. These findings may help understand neuropsychiatric conditions such as OCD, autism, and major depressive disorder.
Researchers investigated neural mechanisms of stress-induced cardiovascular responses by activating lateral habenula in rats. Activation caused changes in blood pressure and heart rate, which were suppressed by pharmacological blockade of dopamine neurotransmission.
Researchers found that artificial induction of GluCer leads to cellular senescence in DA neurons, highlighting the role of lipid aggregation in PD. The study proposes that lysosomal impairment and lipid accumulation trigger expression of a cellular senescence phenotype in vulnerable DA neurons.
Research reveals that the midbrain of midshipman fish initiates and patterns sounds used in vocal communication. The findings suggest a functional comparable periaqueductal gray node between fish and mammals, which can influence acoustic structure of social context-specific vocal signals.
Researchers have identified a diverse range of dopamine neurons that control movement, contradicting the long-held assumption that they only respond to rewards. The study sheds new light on Parkinson's disease, which affects motor skills despite the loss of dopamine neurons.
Researchers have discovered a group of nerve cells in the midbrain that can completely stop all forms of movement and slow down breathing and heart rate when stimulated. The study provides valuable insight into how the nervous system controls movement and may help understand Parkinson's disease.
Researchers aim to understand how neurons receive signals for taste and touch sensations, exploring potential emotional correlations. The study will investigate the organization of brain circuits supporting these intersections, with implications for health and disease.
Researchers used Neuropixels probes to measure the activity of synaptically connected retinal and midbrain neurons, revealing a mosaic-like neural connection. The study provides new insights into visual processing and strengthens our understanding of blindsight.
A recent study by the University of Bonn found that neurons born early can develop into all types of dopaminergic neurons in the midbrain, with their career paths determined by the time of emergence. This is contrary to other nerve cells, whose order of birth determines their profession.
Scientists have created a searchable atlas of distinct cell populations in the ventral tegmental area, a key brain region involved in reward-directed behavior and substance use disorders. The study identified 16 cell populations, including classic dopaminergic neurons, glutamatergic neurons, and GABAergic neurons.
Researchers have discovered distinct populations of neurons in the mesencephalic locomotor region that control different body movements. These findings could improve therapies for Parkinson's disease by targeting specific neuronal populations involved in postural changes and body extension.
Researchers found a compound derived from turmeric essential oil has neuroprotective properties against Parkinson's disease, by enhancing cellular antioxidants and activating Nrf2. The findings suggest that compounds with anti-inflammatory effects on microglia may suppress dopaminergic degeneration, opening new avenues for treatment.
Research from Washington University in St. Louis found that electric fish pause before sharing important information to increase listener response. The study reveals an underlying mechanism for how pauses allow neurons to recover from stimulation, making the following message clearer for the listener.
Researchers found that dopamine-related changes in the brain stem may influence human behavior and decision-making. Fluctuations in the dopaminergic midbrain have been linked to behavioral variability, suggesting a possible non-random basis for human choices.
Research found structural changes in brain after one football season, despite no clinically diagnosed concussions. The study used MRI scans and helmet accelerometers to track player injuries.
Researchers found that repeated subconcussive head hits can cumulatively cause brain trauma, leading to structural changes in midbrain white matter. The study suggests that early detection and prevention of injury are crucial in protecting players from long-term neurologic damage.
Researchers discovered that owl brains use fewer neurons to encode multiple locations, solving the problem of selection at all possible locations. This finding applies to humans and may help understand disorders like ADHD.
Researchers discovered that neural encoding of sensory information leading to belief updates is negatively related to dopamine receptor availability. The study also found a link between dopamine and the ability to flexibly update beliefs, with paranoid ideation being negatively related to sensitivity to meaningful sensory information.
Scientists from TUM discovered that individual nerve cells create parallel connections to three areas of the brain, establishing feedback loops that reinforce salient stimuli while suppressing others. This automatic attention control mechanism is also shared by humans, revealing insights into perception and consciousness.
Researchers at FAU found that immune cells in Parkinson's patients, specifically T-cells, kill nerve cells producing dopamine. Antibodies blocking Th17 cells offer hope for new treatment methods.
Researchers discovered that brain's midbrain encodes errors in identity expectations, updating frontal lobe for decision-making. Dopamine neurons likely involved in encoding these errors.
Rats exposed to nicotine during adolescence showed increased alcohol self-administration compared to those not exposed or exposed as adults. The study suggests that adolescent nicotine alters the brain's reward pathways, leading to a long-lasting risk of problem drinking later in life.
Cats deaf from an early age exhibit increased connections between auditory cortex and superior colliculus, a midbrain region responsible for directing the animal's environment. This reorganization may support enhanced information processing.
Researchers identified midbrain 'start neurons' that control locomotion speed and context-dependent behaviors. The study uses optogenetics to activate specific neuronal groups, revealing the complex role of the Cuneiform Nucleus and pedunculopontine nucleus in controlling locomotor movements.
A recent study published in PLOS Biology has made the first detailed map of the brain regions in amphioxus, a fish-like marine chordate closely related to vertebrates. The findings challenge prevailing ideas about brain formation and suggest that the vertebrate brain evolved from two initial regions rather than three.
Researchers at the University of Luxembourg have successfully grown brain-like cultures from human stem cells, mirroring the structure and function of the midbrain. This breakthrough allows for the study of Parkinson's disease mechanisms and potential treatments, as well as reducing animal testing in brain research.
A laboratory study found that alpha-synuclein, a protein involved in Parkinson's disease, can travel from the brain to the stomach via specific nerve pathways. The protein was detected in gastric nerve terminals six months after its initial midbrain expression.
Researchers at York University have discovered a new physiological system that continuously updates the remembered location of visual targets. This finding suggests that continuous updating of signals could emerge in other visuomotor areas of the brain.
Researchers found that exercise-loving mice have significantly greater midbrain volume and larger non-cerebellar brain mass compared to regular mice. The study supports the mosaic theory of brain evolution, suggesting that changes in brain size may be region-specific rather than overall.
Researchers at Karolinska Institutet have identified two molecules that stimulate liver X receptors in the midbrain, promoting the production of new dopamine-producing neurons. These findings may lead to the development of regenerative medicine treatments for Parkinson's disease.
Researchers identified how and where the brain processes frequency-modulated sound signals, which are crucial for understanding language and speech. The study found that these signals begin in the midbrain region of the brain, a surprising discovery that could help with hearing-related disorders.
Researchers identified periaqueductal grey area (PAG) as key brain structure involved in cardiorespiratory response to exercise. PAG activity increases during anticipation and exercise, suggesting its role in autonomic regulation of cardiovascular changes.
Researchers found that novelty activates brain's midbrain region, regulating motivation and dopamine release. Combining new facts with familiar information improves memory recall, even after a delay.
FGF8 promotes cell proliferation, differentiation and survival. In developing embryos, FGF8 is involved in the regulation of neural crest cell migration.
Researchers at Vollum Institute found that dopamine molecules are released from midbrain nerve cells in a targeted manner, traveling to receptors within milliseconds. The study's findings suggest new therapeutic targets for Parkinson's disease and substance abuse.