The study found that sweet and bitter tastes were quickly detected but took longer to be identified, while salty and sour tastes were vice versa. The researchers also discovered that participants' ratings of pleasantness influenced processing speed for sweet and bitter tastes.
Researchers analyzed over 500,000 mouse decisions to identify a brain region supporting a decision-making strategy similar to nonhuman primates. This discovery paves the way for manipulating this circuit using advanced techniques.
A neuroimaging study found that the hippocampus responds strongest to event boundaries in everyday experiences, such as films. The researchers discovered a strong match between participants' hippocampal activity and independent observers' identified transition points, varying according to their agreement on these points.
Researchers found that neural activity in both the left and right hemispheres of the brain is involved in encoding individual arm movements. This discovery could lead to the development of more effective rehabilitation strategies for individuals with limb function after a brain injury, by harnessing the unaffected hemisphere.
A new study demonstrates how visual cortex neurons learn to recognize familiar faces regardless of their location. Participants who reported stronger familiarity with peers more consistently recognized the other individual in different parts of their visual field.
A study of teenage twins reveals that both genetic and environmental factors shape brain activity during sleep. The findings suggest that frontal regions are under stronger environmental control, while regions towards the back of the brain are more influenced by genetics.
Researchers developed new electrophysiology techniques to study the pig hippocampus, confirming features comparable to rodents and non-human primates. This breakthrough establishes pigs as a promising preclinical research model for traumatic brain injury and epilepsy.
Researchers found that mental imagery techniques can effectively regulate pain perception independently of the opioid system. The study used heat pain and visual cues to manipulate participants' expectations, showing that mental imagery is an opioid-independent approach to pain management.
Research reveals obesity activates microglia, consuming healthy synapses and leading to dendritic spine loss. Microglial activity is causally linked to obesity-induced cognitive decline, suggesting a potential therapeutic target for this condition.
A survey of researchers found that scientists of all career stages are prone to jumping to conclusions when interpreting data, similar to undergraduates. Conducting a 'premortem' before new experiments can help identify potential pitfalls and encourage more thoughtful decision-making.
Researchers found that EMDR suppresses fear-related amygdala activity during recall of traumatic memories. The treatment also enhances extinction learning by deactivating the amygdala, a critical brain region for fear learning.
A study of over 1,000 motor vehicle accident survivors found a common genetic variant in the stress response gene FKBP5 linked to increased chronic pain. The researchers discovered that addressing this interaction between the genetic variant and post-traumatic stress may represent a supplemental or alternative treatment option.
Researchers discovered a brain-heart biomarker that can identify mice at risk of developing post-cerebral malaria epilepsy. This finding could translate to humans and improve therapeutic approaches for patients recovering from traumatic brain injury or stroke, which are estimated to develop epilepsy in up to 15 percent of survivors.
Young people who received radiation therapy for pediatric brain tumors struggle to create new memories, but retain those formed before treatment. Reduced neurogenesis in the hippocampus may contribute to this effect.
A study found that regular conversations with young children strengthen connections between critical brain regions for language, regardless of socioeconomic status. The research suggests that early language exposure can promote language skills and brain development.
Researchers have identified altered brain waves and movement abnormalities in young children with autism spectrum disorder, which can be detected as early as infancy using non-invasive neuroimaging techniques. These findings may represent an objective approach to diagnosing autism in young children.
Neurons in brain's master clock exhibit regular activity cycle that is disrupted under constant light conditions. Blocking these neurons reduces the severity of shifts in daily rhythms, suggesting a potential mechanism for modern sleep disorders.
A study published in eNeuro found a common neural signature of balance maintenance in the healthy brain, which could be used to assess balance in patients with movement disorders. The researchers used EEG and EMG to record electrical activity from the brain and muscles while participants walked or stood on a narrow beam.
A laboratory and natural experiment demonstrate how threat dissolves human optimism bias, allowing individuals to flexibly shift between optimistic and pessimistic patterns. The study suggests that stress can improve the processing of bad news, enabling people to adapt their optimistic outlook to changing environmental conditions.
A subset of dopaminergic neurons are inhibited during the day by light-responsive neuropeptide Pigment Dispersing Factor (PDF) and its receptor (PDFR), promoting wakefulness. High daytime levels of PDF increase daytime sleep, while reducing PDFR expression decreases daytime sleep.
A human study found that short training sessions spaced out over weeks improved retention of arbitrary associations, unlike a single 20-minute session. Neuroimaging data showed increased brain engagement in learning-related regions.
A study of hundreds of related monkeys found individual differences in brain connectivity associated with anxious temperament. Functional connectivity within the extended amygdala is heritable and linked to early-life anxiety risk.
Researchers found reduced complexity of adult-born neurons in mice with ApoE4 compared to ApoE3-expressing mice. The study suggests that the Apolipoprotein E risk gene contributes to memory impairment by impairing new neuron development.
Research published in eNeuro suggests that cannabidiol can prevent nausea in rats by increasing serotonin levels in the brain. The findings implicate the endocannabinoid system and its role in regulating nausea, opening up new therapeutic opportunities.
Researchers developed a gene therapy that restored function to the olfactory system in genetically modified mice. The therapy increased cilia and sensory neuron responses, leading to restored connections between neurons and behaviors in odor-guided tasks.
BACE inhibitors may fail Alzheimer's trials due to impaired differentiation of newborn cells, according to a study published in eNeuro. The research suggests that partial BACE inhibition could represent an alternative strategy for reducing AD pathology while maintaining adult neurogenesis.
A study on human brain tissue and preterm rabbits suggests that estrogen treatment can restore the balance of interneurons in the cerebral cortex, which is disrupted in premature birth. This finding implies that mimicking the in utero environment may have the potential to improve developmental outcomes for preterm infants.
A mother's presence can modulate serotonin levels in her pup's developing brain, according to a rat study published in eNeuro. The research found that maternal care increases activity in the prefrontal cortex, a region rich in serotonin receptors.
A study published in JNeurosci found that increased frontal brain activity in healthy older adults is associated with reduced cognitive efficiency, not compensation for age-related decline. The research suggests that the extent to which an older brain operates like a younger one is a key determinant of cognitive function in old age.
Researchers have found that non-invasive brain stimulation during sleep can improve memory consolidation and generalization. The study used a closed-loop transcranial alternating current stimulation system to synchronize brain activity during slow-wave oscillations, leading to enhanced performance in detecting targets in novel situations.
New research on the Neohelice granulata crab reveals that it combines visual information from both eyes to track moving targets. This complex binocular processing may be essential for capturing prey and interacting with other crabs.
Research reveals that prenatal exposure to endocrine-disrupting compounds can lead to a smaller medial prefrontal cortex and decreased cognitive flexibility in adult rats. The study's findings have implications for understanding the neurobiology underlying developmental disorders such as autism.
A study published in JNeurosci reveals the hippocampus plays a key role in predicting visual information based on past experiences. The findings suggest that memories can influence how we perceive the world, with the brain 'filling in' missing information to create a coherent picture.
Researchers found that physical activity increases hippocampal capacity by promoting neurogenesis, which clears out old memories. This process helps maintain memory capacity throughout life, particularly for those with Alzheimer's disease.
A comparative study found that rats use a different approach to solve visual discrimination tasks compared to shrews, monkeys, and humans. Researchers suggest that this difference may indicate distinct brain function in rats.
Research suggests that antidepressant Prozac can alter brain circuit development in mice, leading to social and repetitive behaviors reminiscent of autism. Reversibility of these changes is uncertain, with some alterations permanently changed by fluoxetine exposure.
A study found that impairing glucose conversion in ApoE4 brains may lead to reduced risk or delayed disease onset. The research highlights the potential therapeutic strategy of promoting brain energy conversion to mitigate Alzheimer's risk.
Researchers studied barn owls' brain and behavior while tracking dark dots on a screen, finding evidence of perceptual grouping. This ability, crucial for vision-based species, was previously only studied in primates.
Research suggests that low-dose aspirin regimens could decrease amyloid plaque pathology in mice by stimulating lysosomes. Activating cellular waste removal mechanisms is a promising strategy for slowing disease progression.
Researchers found that some brain networks become more densely connected during adolescence, while others become less so. These changes may underlie the refinement of cognitive abilities that develop during the teenage years.
Researchers discovered that activating GPR139 reduces alcohol intake and restores pain sensitivity thresholds in alcohol-dependent mice. This finding suggests a potential new approach for treating alcohol use disorder.
New research on sea lamprey reveals the evolutionary roots of myelinating glia, cells responsible for insulating axons and enhancing neural communication. The study's findings suggest that myelin evolved to facilitate fast signal transmission in smaller axons of jawed vertebrates.
A study published in JNeurosci found that activating the BLA-CeA circuit counteracted anxiety- and depression-like behaviors in rats, even without physical pain. This discovery sheds light on the complex relationship between pain and emotion, potentially leading to better treatments for chronic pain patients.
A study published in JNeurosci reveals how nicotine interacts with cells regulating the output of a brain region involved in habit formation. Nicotine reduces dorsal striatal output, an effect that persists even after the drug has been cleared from the brain, potentially underlining nicotine addiction.
Research reveals that adolescent binge drinking can disrupt the brain's ability to form short-term memories, affecting the prefrontal cortex and behavior-management abilities. This link may help scientists develop better treatments for alcohol-related negative effects on the brain.
A study found that aggressive mice showed increased dominance and aggression when ΔFosB was overexpressed, suggesting a link between this protein and violent behavior. The research suggests targeting ΔFosB may reduce aggression by modifying the brain's reward system.
Researchers have developed a drug delivery system that repairs neural connections controlling breathing in female rats after spinal cord injury. The system, using brain-derived neurotrophic factor, preserves diaphragm function and motor neurons responsible for muscle activation.
A human neuroimaging study found that the brain creates perceptual illusions when speech is degraded due to prior expectations. The study suggests that predictive coding plays a crucial role in speech perception, with reduced activity in the left superior temporal sulcus associated with misperception.
Repeated exposure to large quantities of alcohol in fruit flies reduces the activity of a protein regulating communication between neurons. This study provides new insight into the neurobiology of alcohol tolerance, revealing that ethanol interferes with neurotransmitter release and Unc13 protein function.
A recent study published in eNeuro resolves a long-standing issue in decision-making by showing how the brain optimizes speed and accuracy. Researchers found that the brain adjusts signal-to-noise ratio to balance speed and accuracy, shedding light on the neural mechanisms underlying this crucial aspect of human behavior.