New research conducted by a team led by Dr. PARK Joo Min of the Center for Cognition and Sociality within the Institute for Basic Science (IBS) unveils a novel technique that could transform the treatment landscape for brain disorders.
The team developed a non-invasive brain stimulation method called Patterned Low-Intensity Low-Frequency Ultrasound (LILFUS), which holds tremendous potential for inducing long-lasting changes in brain function.
Source: Northwestern University.
Scientists have discovered a new neural pathway involved in how the brain encodes the transition to high-intensity fear response behaviors that are necessary for survival, according to a recent study published in Nature.
Jones Parker, Ph.D., assistant professor of Neuroscience, of Pharmacology and of Psychiatry and Behavioral Sciences, was a co-author of the study.
Summary: If neural assemblies between the hippocampus and prefrontal cortex fail to sync together at the correct time, memories are lost.
Source: University of Bristol.
Learning, remembering something, and recalling memories is supported by multiple separate groups of neurons connected inside and across key regions in the brain. If these neural assemblies fail to sync together at the right time, the memories are lost, a new study led by the universities of Bristol and Heidelberg has found.
Summary: In people with PTSD, during REM sleep norepinephrine and serotonin levels remain high, reducing the brain’s ability to inhibit fear-expression neurons through neural rhythms sent between the prefrontal cortex and amygdala. Those with PTSD require higher frequency rhythms to extinguish fear memories. Researchers say unlocking the higher frequencies via therapies could help to restore quality sleep in those with PTSD.
Source: Virginia Tech.
During periods of rapid eye movement (REM) sleep, brain activity often resembles that of awake behavior. At times, the brain can actually be more active during REM sleep than when you’re awake. It’s why REM sleep is sometimes called “paradoxical sleep,” said Virginia Tech neuroscientist Sujith Vijayan.
Summary: Postmortem brains of those with schizophrenia have fewer genes associated with 12-hour activity cycles in the dorsolateral prefrontal cortex. Mitochondrial-related genes in the dlPFC did maintain a 12-hour rhythm, but their activity did not peak at normal times.
Source: PLOS
Researchers at the University of Pittsburgh School of Medicine, U.S. present the first evidence of 12-hour cycles of gene activity in the human brain.
Summary: When actors hear their own names during a performance, their response is suppressed by activity in the left anterior prefrontal cortex, a brain area associated with self-awareness.
Source: UCL
Actors may suppress their core sense of self when acting, as they immerse themselves in a new role, finds a new study by UCL researchers.
Summary: Rhythmic bursts of activity in the prefrontal cortex reduce variability as an animal focuses on a task.
Source: picower institute for learning and memory.
Working memory, that handy ability to consciously hold and manipulate new information in mind, takes work. In particular, participating neurons in the prefrontal cortex have to work together in synchrony to focus our thoughts, whether we’re remembering a set of directions or tonight’s menu specials.
Summary: Extended intense cognitive work causes potentially toxic byproducts to build up in the prefrontal cortex. This alters control over decision-making, causing a shift toward low-cost actions that require less effort as cognitive fatigue sets in.
Source: Cell Press.
It’s no surprise that hard physical labor wears you out, but what about hard mental labor? Sitting around thinking hard for hours makes one feel worn out, too.
Summary: AgRP neurons in the hypothalamus play a critical role in shaping the structure and function of the prefrontal cortex in mice. The findings shed light on how the prefrontal cortex is altered in disorders such as schizophrenia.
Source: Yale.
The prefrontal cortex region of the human brain is responsible for a range of complex functions from decision-making to certain types of memory.
Although the interplay between sex and mental health is well-studied, a new study suggests there may be a complex correlation between seemingly disparate disorders.
In a new paper published in the Journal of Affective Disorders Reports, a group of Italian psychology researchers say they’ve found a correlation between attention-deficit/hyperactivity disorder (ADHD), depressive symptoms, hypomania (the clinical term for “mania” or high energy) and hypersexuality, or an intense preoccupation with sexual thoughts and acts — and that people who experience these sets of symptoms may use sex as a sort of “self-medication.”
Study coauthors Giacomo Ciocca, a sexual psychology assistant professor at Rome’s Sapienza University, and Davide Doroldi, a clinical psychologist, told PsyPost that they were inspired to look into the possible link after observing higher rates of hypersexuality among people with ADHD.