A study found that individuals with greater volume in the dorsolateral and ventromedial prefrontal cortex tend to exhibit improved dietary self-control. This suggests that brain anatomy plays a crucial role in making healthier food choices.
Researchers created personalized brain models using The Virtual Brain platform, accurately predicting the effects of tumors on brain connectivity. This breakthrough opens up new possibilities for integrating neuroimaging data with virtual brain modeling to enhance surgical planning.
A study published in JNeurosci reveals a new pattern of neuronal activity in the gastrointestinal tract that generates rhythmic electrical activity in smooth muscle. This finding identifies a previously unknown mechanism for colon movement, suggesting an early feature preserved through nervous system evolution.
Research reveals that E. coli infection can induce delirium in aging rats by reducing levels of brain-derived neurotrophic factor (BDNF), a protein essential for long-term memory formation. The study suggests that immune system activation, such as after surgery or infection, may contribute to cognitive decline in the elderly.
A new study published in eNeuro provides evidence for the link between the motor system and our sense of time. Participants in the research task showed synchronization between action preparation and perception, demonstrating that the brain operates at different speeds.
A study on epilepsy patients has shown that repetitive transcranial magnetic stimulation (rTMS) can be used to predict which brain regions will be affected by the treatment. This research could lead to individualized stimulation protocols, improving treatment outcomes for conditions like depression.
Researchers discovered a population of neurons that give rise to unique mating calls in two closely-related frog species. The findings suggest that changes in these cells over time may have shaped vocal patterns in vertebrates. Ancient circuits involved in breathing control were found to be linked to the evolution of vocal patterns.
Researchers studied Parkinson's patients with deep brain stimulation and found that brain activity alternates between the left and right sides of the brain while stepping. The introduction of a metronome improved accuracy and enhanced beta activity.
A ketogenic diet has been found to protect retinal cells from degeneration in a mouse model of glaucoma, increasing energy availability. The study suggests that a ketogenic diet may help maintain vision in patients with glaucoma.
A mouse study found that time-restricted feeding maintains normal food intake and reduces weight gain in obese mice. The researchers discovered that restricting food availability to one half of the day resets the normal timing of satiety signals, leading to less weight gain.
A neuroimaging study found that control aversion is linked to connectivity between brain regions and feelings of distrust. The study provided new insight into the influence of choice restriction on personal decisions.
A study published in eNeuro demonstrates that memories can be transferred between organisms by extracting ribonucleic acid (RNA) from a trained animal and injecting it into an untrained animal. This finding provides new clues in the search for the physical basis of memory.
A recent study found that heroin users derive more pleasure from using it at home, while cocaine users enjoy it more outside. The brain regions involved in processing drug reward and context were activated during the emotional imagery task.
Researchers manipulated brain activity and stress hormone levels to control self-inflicted bite wounds in rats, identifying key brain regions involved in self-injurious behavior. The study provides new insights into the regulation of compulsive self-biting and its relationship with stress and reward processing.
Researchers discovered a brain network that gives rise to feelings of gratitude, identifying the medial prefrontal cortex and perigenual anterior cingulate cortex (pgACC) as key regions. These areas process relevant social information and integrate it into complex emotions, such as gratitude.
A neuroimaging study found that the brain's visual system fills in missing information to maintain perception when visibility is low. The study, published in eNeuro, provides a more comprehensive account of how individuals perceive their world through vision.
A field study in Panama reveals how tropical fish use electric fields to communicate for coordinated behaviors like mating and reproduction. Researchers found distinct signals for attracting mates and signaling fertilization, highlighting the need for studying behavior and sensory scenes in natural environments.
A study found that individuals with a DCC gene mutation had reduced connectivity between brain regions involved in reward processing, leading to less impulsive behavior and lower cigarette smoking. The researchers also observed decreased volume in the striatum, a brain region critical for motivation and pleasure.
Aging nerves are damaged by immune cells that drive degeneration, but a new treatment blocks these cells, restoring nerve structure and muscle strength. Treatment with a cytokine receptor inhibitor reduced macrophage numbers and improved grip force in aging mice.
Researchers found that valproic acid, an antiepileptic drug, can cause birth defects in frog embryos by interfering with glutamate signaling. The study suggests that new epilepsy medications could be developed to be safer for pregnant women.
A study on genetically diverse worms reveals that a small protein called FLP-18 controls the length of their backward movement, which increases the likelihood of changing direction to navigate towards food. This mechanism may help the worm explore a larger area during periods of extreme hunger.
Recalling traumatic memories enhances the rewarding effects of morphine in male rats, increasing freezing fear response and preference for morphine. Dopamine receptors D1R and D4R play a role in this effect, suggesting abnormal dopamine signals may underlie PTSD addiction.
Researchers found that trace amounts of beta-amyloid predicted future levels of tau and both preceded memory decline. Early intervention is crucial in slowing Alzheimer's disease progression by targeting anti-amyloid therapies before symptoms appear.
Naloxone has been shown to reduce brain inflammation and improve neurological function in rats after a stroke, with a potential new treatment avenue for stroke patients. Further study is warranted to investigate naloxone's effectiveness in humans.
Researchers discover urethane, a compound formed during beer and wine fermentation, is more effective at combating seizures caused by organophosphate nerve agents than the current recommended treatment. The study suggests urethane or its derivative may prevent seizures from developing into epilepsy.
A new mechanism regulating axon pathfinding has been identified in zebrafish embryos, suggesting that neuronal activity can influence brain connectivity. The research found that optogenetic stimulation of an inhibited N-methyl-D-aspartate receptor was necessary for axons to properly cross the midline.
Researchers identified a seizure-triggered pathway that contributes to blood-brain barrier dysfunction in epilepsy. Blocking the activity of an enzyme called cytosolic phospholipase A2 (cPLA2) prevented capillary leakage and associated changes.
A study using electroencephalography found that brain activity in the precuneus region of the parietal cortex plays a crucial role in detecting changes in natural sounds. Participants who were exposed to a longer sound stimulus reacted faster and identified changes more accurately.
A protein involved in Alzheimer's disease may be a promising target for treating HIV-related neurological disorders. Elevated levels of BACE1 and Aβ oligomers were found in postmortem brain tissue of HIV-positive humans, suggesting similar mechanisms of neurotoxicity.
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.
Research suggests that age-related disruptions in sleep are not due to changes in individual neurons' activity. The study found similar effects of sleep deprivation on local sleep oscillations across different age groups.
A human brain imaging study found that LSD reduces activity in areas important for establishing one's sense of self, blurring the line between self and other. The serotonin receptor system appears to be a target for treating social impairments in disorders such as depression and schizophrenia.
Researchers found that mice increased their running on a wheel two hours before the door to the nebulizing chamber was open. The activated brain regions included those implicated in reward processing and craving: the orbitofrontal cortex, dorsomedial hypothalamus, and lateral septum.
Mice lacking the cold-sensing ion channel TRPM8 consumed more food during the day when they should be asleep, leading to obesity and high blood sugar in adulthood. This study reveals a previously unrecognized link between thermal sensing systems, thermoregulation and food intake.
Researchers found that the brain's auditory cortex does not solely represent acoustic environments but also incorporates perception. Custom ear molds disrupted participants' elevation perception, revealing different responses to sounds between sessions, indicating a dynamic relationship between sensory encoding and perception.
Research found that flu strains H3N2 and H7N7 caused memory impairments and structural changes in the hippocampus of mice. The infections also activated brain immune cells and altered gene expression, suggesting a potential threat to healthy brain function.
Researchers simulated a sea slug's decision-making process in Cyberslug, a virtual environment that mimics the creature's behavior. The study found that hunger and learning ability are crucial attributes in regulating prey consumption, laying the groundwork for more complex models of AI decision-making.
A groundbreaking study published in eNeuro finds that low-dose ketamine promotes resilience to future adverse events in female rats, similar to its effects in males. The researchers identified a neural circuit involving the prefrontal cortex and dorsal raphe nucleus responsible for ketamine's stress-reducing properties.
A study published in JNeurosci found that a woman's immune system during pregnancy influences the development of her child's brain network, which may be linked to psychiatric disorders such as autism and schizophrenia. Higher maternal immune activation was also associated with improved cognitive ability in infants.
The study found that participants were more willing to punish a wrongdoer when they experienced injustice directly, associating with brain activity in the ventral striatum. Participants receiving oxytocin chose less intense punishments, suggesting the hormone's role in maintaining fairness.
A new mouse model lacking a gene linked to intellectual disability has difficulty navigating mazes and remembering learned paths, but no changes in social or repetitive behavior were observed. Treating the mice with a compound improved learning and memory deficits by targeting the AMPK-mTORC1 translational pathway.
An imaging study found altered signaling in the brain and spinal cord after short-term infusion of remifentanil, leading to increased sensitivity to heat pain stimuli. The results indicate that opioid application can alter pain processing in the central nervous system.
A study of adolescents found that thinner brain cortex regions are associated with more impulsive decision-making. Cortical thickness predicted delay discounting, a measure of impulsivity related to the value of rewards, above cognitive and demographic variables.
Researchers identified natural compounds that repel fire ants by activating a type of ion channel highly expressed in the insect's antennae and legs. These compounds, including one found in cinnamon, were found to be less effective at activating the fire ant version of this channel compared to honey bees.
A new study reveals that fentanyl can increase pain sensitivity in animals by lowering their pain threshold. The researchers found that blocking calcium signaling inside sensory neurons prevents this effect, suggesting a possible mechanism for hyperalgesia.
A study published in JNeurosci found that stimulating carbon dioxide-sensing neurons in the midbrain of adult male mice awakened them without affecting breathing. This discovery sheds light on the mechanisms underlying obstructive sleep apnea, sudden infant death syndrome, and sudden unexpected death in epilepsy.
A new study published in eNeuro found that a drug currently being evaluated for depression and suicidal tendencies also alleviates anxiety, fearful behaviors, and memory deficits in rats exposed to blast injuries. The drug, BCI-838, promotes the generation of new brain cells in the hippocampus.
Neuroscientists have created a detailed map of the connections in the subgenual cingulate area 25 (A25) of non-human primates. The research reveals strong links between A25 and brain areas involved in emotional regulation, stress response, and memory formation.
A study on rats exposed to chronic stress found that cognitive behavioral therapy increases activity in the medial prefrontal cortex, a brain region linked to improved treatment outcomes. The research provides insight into how behavioral therapy can be targeted to improve its effectiveness.
A brain imaging study found that preterm infants with developmental disturbances in the Heschl's gyrus, a part of the brain involved in speech and language, exhibit reduced expressive language ability. The study suggests that preterm birth may impact language development due to altered auditory cortex maturation.