All posts tagged: processing

Early life stress fundamentally alters alcohol processing in the brain

Early life stress fundamentally alters alcohol processing in the brain

Experiencing social isolation during early developmental years can lead to increased anxiety and a higher preference for alcohol later in life. A new study in rats shows that these early stressors physically alter how the brain responds to alcohol, specifically changing how the chemical dopamine is regulated in regions linked to reward processing. The findings were published in the journal Addiction Neuroscience. As children and teenagers navigate critical periods of brain development, social contact helps shape their neural circuits. Environmental stressors during this sensitive window can disrupt normal developmental trajectories. Experiencing isolation or neglect during youth can elevate the risk of mood disorders and substance use issues in adulthood. Researchers from Binghamton University and Brigham Young University wanted to understand the biological mechanisms behind this vulnerability. Lead author Gavin J. Vaughan and senior author Anushree N. Karkhanis, both affiliated with Binghamton University, focused on a brain structure called the ventral pallidum. The ventral pallidum is a small cluster of cells resting deep within the brain. It acts as a central hub for assessing the value …

Brief mindfulness practice accelerates visual processing speeds in adults

Brief mindfulness practice accelerates visual processing speeds in adults

Practicing mindfulness meditation using a mobile application for a month can help people process visual information and initiate localized eye movements faster. The visual attention benefits apply to young, middle-aged, and older adults alike, without distinct differences across age categories. These initial findings were published in the journal eNeuro and suggest that brief daily meditation can successfully alter basic cognitive functions. The human brain relies on a small region called the locus coeruleus to maintain mental focus and process incoming sensory information. This deep brain structure acts as the primary source of noradrenaline. Noradrenaline operates as a chemical messenger that helps regulate general attention, stress, and physical arousal states. Studies in animal models provide clues about how this part of the brain operates. When researchers artificially stimulate the locus coeruleus in monkeys, the animals show better visual attention. Blocking the release of noradrenaline has the opposite effect, leaving animals easily distracted. These findings confirm that this brain region directly dictates attention spans. As people age, the locus coeruleus often undergoes structural degradation and loses some …

Persistent depression linked to resistance in processing positive information about treatment

Persistent depression linked to resistance in processing positive information about treatment

A study comparing individuals with persistent depressive disorder to those with episodic major depressive disorder found that those with persistent depression had lower treatment expectations. These individuals also changed their expectations about treatment outcomes less in response to positive reports by other patients. The research was published in Psychological Medicine. Depression, or major depressive disorder, is a mood disorder characterized by persistent sadness or loss of interest lasting at least two weeks and causing significant impairment in daily functioning. It involves cognitive, emotional, and physical symptoms such as hopelessness, fatigue, sleep disturbances, appetite changes, and difficulty concentrating. Treatment typically involves psychotherapy, pharmacotherapy such as antidepressants, or a combination of both. However, for many individuals who develop depression, treatment does not result in a remission of symptoms. Furthermore, a substantial share of individuals whose depressive symptoms do go into remission after treatment soon experience a new depressive episode. Overall, in around 20-30% of people who suffer from major depressive disorder, depressive symptoms become chronic, meaning that they persist for at least 2 years. Their condition may …

Genetic risk for anhedonia linked to altered brain activity during reward processing

Genetic risk for anhedonia linked to altered brain activity during reward processing

A study in Germany found that individuals with higher polygenic risk scores for anhedonia showed specific patterns of brain activity when processing anticipated monetary rewards. More specifically, they showed decreased activation in the bilateral putamen and left middle frontal gyrus during anticipation of rewards and decreased activation in the right caudate while receiving feedback. The research was published in the Journal of Affective Disorders. Anhedonia is the reduced ability to experience pleasure or interest in activities that are normally rewarding. It is a core symptom of major depressive disorder but also appears in other conditions such as schizophrenia, substance use disorders, and bipolar disorder. Anhedonia can involve diminished pleasure during activities (consummatory anhedonia) or reduced motivation and anticipation for rewards (anticipatory anhedonia). People with anhedonia may withdraw from social interactions, hobbies, or goals they once enjoyed. Neurobiologically, it is linked to dysfunction in brain reward systems, particularly pathways involving dopamine. Psychological factors such as chronic stress, trauma, and negative cognitive patterns can contribute to its development. Anhedonia is associated with poorer quality of life and …

Costco hit with new lawsuit over popular item due to alleged salmonella outbreak at processing plant

Costco hit with new lawsuit over popular item due to alleged salmonella outbreak at processing plant

Stay ahead of the curve with our weekly guide to the latest trends, fashion, relationships and more Stay ahead of the curve with our weekly guide to the latest trends, fashion, relationships and more Stay ahead of the curve with our weekly guide to the latest trends, fashion, relationships and more Costco’s rotisserie chickenis at the center of a new class action lawsuit, with an animal rights nonprofit alleging that the retailer’s Nebraska processing plant is contaminated with Salmonella. Filed Thursday in Seattle federal court by plaintiff Lisa Taylor, of Affton, Missouri, the proposed suit cites a December Farm Forward study criticizing safety conditions at Costco’s Lincoln Premium Poultry plant, which opened in 2019 and processes over 100 million chickens annually, Reuters reports. The complaint alleges that the Fremont plant, which is not named as a defendant, “consistently” violates U.S. Department of Agriculture safety standards, with over 9.8 percent of whole chickens and 15.4 percent of chicken parts testing positive for salmonella, according to the outlet. Taylor reportedly claims she regularly purchased one or two …

Borderline personality disorder in youth linked to altered brain activation during self-identity processing

Borderline personality disorder in youth linked to altered brain activation during self-identity processing

A new neuroimaging study suggests that adolescents with borderline personality disorder exhibit distinct patterns of brain activity when reflecting on their own identity. The findings indicate that these young patients show reduced activation in the dorsolateral prefrontal cortex, a region associated with cognitive control, compared to healthy peers. This research was published in Translational Psychiatry. Borderline personality disorder is a serious mental health condition. It is characterized by pervasive instability in moods, interpersonal relationships, self-image, and behavior. A central feature of this disorder is a disturbed sense of identity. Individuals often experience shifting goals, values, and vocational aspirations. This instability can manifest early in the course of the disorder. Many previous studies have investigated the biological roots of the condition. Most of research has focused on emotional dysregulation rather than identity disturbance. Existing functional imaging studies have typically involved adult patients. These adult participants often have a history of medication use or co-occurring psychiatric conditions. These factors can make it difficult to determine which brain abnormalities are specific to borderline personality disorder itself. To address …

Psychopathic female criminals exhibit unexpected patterns of emotional processing

Psychopathic female criminals exhibit unexpected patterns of emotional processing

Recent research indicates that incarcerated women with psychopathic traits exhibit unexpected patterns of emotional processing, particularly when viewing unpleasant images. A new study suggests that instead of displaying the fearlessness often associated with psychopathy, these women may engage in defensive emotional regulation strategies that result in a reduced sense of control. These findings were published in the journal Women & Criminal Justice. Psychopathy is a personality construct characterized by emotional deficits and antisocial behavior. It is historically studied through a male-centric lens. Researchers have established that the disorder manifests differently across genders. Men often display overt physical aggression. Women are more likely to utilize relational aggression, such as manipulation or emotional exploitation. This difference creates a gap in scientific understanding regarding how female offenders process emotions. The biological and social mechanisms driving these behaviors remain unclear. Understanding these nuances is essential for creating effective rehabilitation programs. Marina Pinheiro and her colleagues at the University of Minho in Portugal sought to address this disparity. They designed an investigation to measure how women in prison respond to …

US freezes visa processing from 75 countries over public assistance

US freezes visa processing from 75 countries over public assistance

U.S. Secretary of State Marco Rubio speaks during his end-of-year press conference at the State Department in Washington, D.C., U.S., Dec. 19, 2025. Kevin Mohatt | Reuters The State Department said Wednesday it will suspend the processing of immigrant visas for citizens of 75 countries whose nationals are deemed likely to require public assistance while living in the United States. The State Department, led by Secretary Marco Rubio, said it had instructed consular officers to halt immigrant visa applications from the countries affected in accordance with a broader order issued in November that tightened rules around potential immigrants who might become “public charges” in the U.S. The suspension, which will begin Jan. 21, will not apply to applicants seeking non-immigrant visas, or temporary tourist or business visas. “The Trump administration is bringing an end to the abuse of America’s immigration system by those who would extract wealth from the American people,” the department said in a statement. “Immigrant visa processing from these 75 countries will be paused while the State Department reassess immigration processing procedures to prevent the entry of foreign nationals who would take welfare and public benefits.” The statement …

Fragmented sleep predicts slower mental processing speed the next day in older adults

Fragmented sleep predicts slower mental processing speed the next day in older adults

New research published in the journal Sleep Health has found that sleep fragmentation, which refers to the amount of time spent awake in bed after initially falling asleep, is linked to slower mental processing speeds the next day in older adults. The findings suggest that the continuity of sleep may be more relevant to daily cognitive functioning in later life than the total number of hours slept. Sleep is widely recognized as a fundamental pillar of physical health, yet its specific relationship to cognitive maintenance in older age remains a subject of scientific inquiry. Much of the existing data regarding sleep and aging relies on information collected at a single point in time, often asking participants to recall their general sleep habits over weeks or months. This approach provides a broad overview but often misses the dynamic, day-to-day variations in rest and mental acuity that define daily living. The authors of the current study sought to fill this gap by observing how fluctuations in sleep quality on a specific night relate to cognitive performance on …

Single session of weightlifting improves executive function and processing speed

Single session of weightlifting improves executive function and processing speed

A new study found that processing speed regarding inhibitory control (the ability to suppress automatic or impulsive responses) and working memory improved in a group of participants after moderate-intensity resistance exercises compared to a group that was resting and watching a video during that time. Blood lactate levels and systolic blood pressure also increased after exercises. The paper was published in Psychophysiology. Resistance exercises are physical activities that make muscles work against an external force, such as weights, resistance bands, or one’s own body weight. They are designed to increase muscle strength by challenging the muscles to contract against this resistance. Common forms include weightlifting, push-ups, squats, and exercises using machines in a gym. These exercises trigger muscle fibers to adapt and grow stronger over time. Resistance training can also help improve bone density, which is especially important for preventing osteoporosis. It boosts metabolism because stronger muscles burn more calories even at rest. Such exercises are valuable for improving balance and coordination, particularly in older adults. They also reduce the risk of injuries by strengthening …