Breaking News
March 25, 2019 - Benefits of osteoporosis treatment in postmenopausal women outweigh the perceived risks
March 25, 2019 - Researchers find evidence of Cryptosporidium parasite in Minnesota’s public water systems
March 25, 2019 - Three Clues to Raised Risk of Miscarriage
March 25, 2019 - Structured play helps toddlers self-regulate, altering their life course
March 25, 2019 - Translating horror into justice: Stanford psychiatrist advocates for human rights
March 25, 2019 - HORIBA Medical introduces D-Dimer reagent for Yumizen G hemostasis range
March 25, 2019 - Recurrent pregnancy loss may be caused by sperm DNA damage, finds study
March 25, 2019 - Special Collection tracks development of new diagnostic tests for tuberculosis
March 25, 2019 - Air Force develops genetic test to predict mental performance
March 25, 2019 - To abort or not to abort—making difficult choices alone
March 25, 2019 - Computer vision technology could aid ICU care by spotting movement
March 25, 2019 - IONTAS wins ‘Small Business of the Year’ category at Cambridge News Business Excellence Awards 2019
March 25, 2019 - First postpartum depression drug gets FDA nod
March 25, 2019 - Research Recognition Award will help improve lives of young people with absence epilepsy
March 25, 2019 - Bisphosphonates to treat osteoporosis appears to be beneficial for all women
March 25, 2019 - Dolomite Bio releases new Drop-seq datasets for single-cell RNA sequencing
March 25, 2019 - Hemoglobin A1c blood test may underestimate prevalence of diabetes
March 25, 2019 - Eating leafy green vegetables may help maintain muscle strength and mobility
March 25, 2019 - BMA secures state-backed clinical negligence indemnity scheme for GP trainees
March 25, 2019 - Biohaven Announces Completion of Pre-NDA Meeting With FDA for Oral CGRP Receptor Antagonist Rimegepant
March 25, 2019 - Adding breakfast to classrooms may have a health downside
March 25, 2019 - She Was Dancing On The Roof And Talking Gibberish. A Special Kind Of ER Helped Her.
March 25, 2019 - KNAUER introduces new Sepapure FPLC columns and media for protein purification tasks
March 25, 2019 - Weight loss in obese migraine sufferers can improve their quality of life
March 25, 2019 - Exposure to particulate air pollution may lead to reduced sperm production
March 25, 2019 - Synthetic peptide appears to disrupt inflammation and protect kidneys from nephritis
March 25, 2019 - New guideline focuses on strategies to improve health of older adults with diabetes
March 25, 2019 - Study evaluates prescribing of preventive drugs at the end of life in older adults with cancer
March 25, 2019 - Radial or femoral approaches for PCI are equal in terms of survival in heart attack patients
March 25, 2019 - Study shows how some autoimmune diseases are more closely related than others
March 25, 2019 - Long term opioid medications impacts production of important hormones
March 25, 2019 - FDA Issues Complete Response Letter for Zynquista (sotagliflozin)
March 25, 2019 - CDC researchers report on trends in hospital breastfeeding policies
March 25, 2019 - States Push For Caregiver Tax Credits
March 25, 2019 - Females on ketogenic diet fail to show metabolic benefits in animal model
March 25, 2019 - Modulating stiffness of blood-forming stem cells could facilitate mobilization procedures
March 25, 2019 - Gene editing regulations to be tightened
March 25, 2019 - CPAP treatment can result in weight loss in people with sleep apnea and obseity
March 25, 2019 - Highly attractive businesswomen are considered less trustworthy ‘femmes fatales’
March 25, 2019 - Breast Density Categorization Varies With Screening Modality
March 25, 2019 - Researchers explore link between metal exposure and Parkinson’s symptoms
March 25, 2019 - Later meal timing may contribute to weight gain
March 25, 2019 - Around one in hundred people has autism spectrum condition in China
March 25, 2019 - Research paves way for new standard of care to improve heart’s pump function
March 25, 2019 - Exposure to HIV virus, antiretroviral therapy before birth linked to obesity and asthma-like symptoms
March 25, 2019 - Transgender men preserve their fertility potential after one year of testosterone therapy
March 25, 2019 - Tighter Blood Pressure Control May Prevent Brain Lesions
March 25, 2019 - A reward now or later? Exploring impulsivity in Parkinson’s disease patients
March 25, 2019 - Financial incentives fail to increase completion rates of colorectal cancer screening tests mailed to patients
March 25, 2019 - New research program launched to highlight sexual harassment in academia
March 25, 2019 - Hemoglobin A1c blood test does not detect diabetes in most patients, shows study
March 25, 2019 - Wyss Technology licensed by Sherlock Biosciences to create affordable molecular diagnostics
March 25, 2019 - DWK Life Sciences launches KIMBLE GLS 80 Media Bottle and Multiport Cap System
March 25, 2019 - New study aims to reduce online sexual exploitation of children
March 25, 2019 - Want healthier eating habits? Start with a workout
March 25, 2019 - New approach to prescribing antibiotics could curb resistance
March 24, 2019 - Theravance Biopharma Announces First Patient Dosed in Phase 2b/3 Study of TD-1473 in Patients with Ulcerative Colitis
March 24, 2019 - Prenatal DHA prevents blood-pressure increase from obesity during childhood
March 24, 2019 - Combined immunosuppression may be effective, safe in treating older patients with Crohn’s disease
March 24, 2019 - GSK sells health drinks arm, buys US cancer treatment firm
March 24, 2019 - Bacteria and innate immune factors in birth canal, cervix may be key to predicting preterm births
March 24, 2019 - IgG antibodies play unexpected role in atherosclerosis
March 24, 2019 - Sounds and vibrations are quite similar for the brain, finds new study
March 24, 2019 - Practices for Reducing COPD Hospital Readmissions Explored
March 24, 2019 - Could an eye doctor diagnose Alzheimer’s before you have symptoms?
March 24, 2019 - Enzyme inhibitor stops inflammation and neurodevelopmental disorders in mouse models
March 24, 2019 - Walk, Dance, Clean: Even a Little Activity Helps You Live Longer
March 24, 2019 - Americans used less eye care in 2014 versus 2008
March 24, 2019 - Study finds link between depression in 20s linked to memory loss in 50s
March 24, 2019 - New tool helps physiotherapy students to master complex fine motor skills
March 24, 2019 - The AMR Centre secures £2.3m funding boost
March 24, 2019 - Study examines effects of taking ondansetron during first trimester of pregnancy
March 24, 2019 - Researchers identify a more effective treatment for cancer
March 24, 2019 - Open-source solution for multiparametric optical mapping of the heart’s electrical activity
March 24, 2019 - New nanotechnology approach shows promise in treating triple negative breast cancer
March 24, 2019 - Trevena Announces Publication of APOLLO-1 Results in The Journal of Pain Research Highlighting Oliceridine’s Potential for Management of Moderate-to-Severe Acute Pain
March 24, 2019 - Maternal deaths following C-section 50 times higher in Africa compared to high-income countries
March 24, 2019 - Apple watch could detect irregular heart beat says study
March 24, 2019 - Queen Mary University of London’s BCI boosts radionuclide imaging capabilities with MILabs VECTor technology
March 24, 2019 - Girls should be encouraged to gain more ball skills, shows study
Making moves to understand cognitive function in the brain

Making moves to understand cognitive function in the brain

image_pdfDownload PDFimage_print

It is known that certain areas of the brain are responsible for certain functions of the body. The cerebellum, a structure found in the back of the skull, is known to be important for the control of movement, while the frontal cortex is responsible for cognitive functions such as short-term memory and decision making. However, as researchers continue to unlock the mystery of how billions of neurons in the brain interact, it is becoming more apparent that it is not that black and white.

In a study in the current edition of Nature, researchers at Baylor College of Medicine have found the first direct evidence that the cerebellum does more than just control muscle activity. It also plays a role in cognitive functions. While past studies have hinted at this, Dr. Nuo Li, assistant professor of neuroscience and a McNair Scholar at Baylor, and his colleagues have shown in mouse models that parts of the cerebellum are active during short-term memory, even when the body is not in motion, and memory activity in the frontal cortex is dependent on activity in the cerebellum.

“We knew that the frontal cortex and the cerebellum are anatomically connected with each other,” Li said. “We also knew that in humans, cerebellar damage has been known to cause memory or planning problems, so the two might be connected.”

Li and his colleagues examined activity in the cerebellum during time periods when animals are not moving, but instead are thinking. To do this, the researchers trained mice in a task that required them to make decisions based on short-term memory. Mice were shown a single object in a specific location. After a delay, the animal had to remember where the object was and indicate its location by licking in a left or right direction. The delay represented a moment when the mice had to use short-term memory to recall where the object was before acting out the correct movement.

In previous work, researchers have found memory activity in the frontal cortex during the delay period that predicted what future movement the mice will make. Li and colleagues found that memory activity during the delay period was seen in both the frontal cortex and the cerebellum. Researchers silenced areas of the cerebellum during the delay period, which led to incorrect responses but did not interfere with the movement. At the same time, the memory activity in frontal cortex also was disrupted. This showed that memory activity in frontal cortex was dependent on the cerebellum. They then silenced areas in the frontal cortex, which stopped memory activity in the cerebellum.

“We found that the output of the cerebellum targets the frontal cortex and vice versa. When we disrupt the communication between the two areas of the brain, memory activity is disrupted. Our results show that activity orchestrating a single behavior is coordinated by multiple regions of the brain,” Li said.

The cerebellum is known to guide our movement by learning from errors. Li explains that when we learn to shoot a basketball, we initially have lots of missed shots. However, the brain can adjust our shots by adjusting our movements based on errors from the missed shots and eventually produce accurate shots. It is known that the cerebellum is responsible for this motor learning. It combines errors from the missed movements and the movement that was made to produce a more accurate movement.

Li’s team currently is pursuing experiments testing this hypothesis that the cerebellum may perform a similar function on brain activity related to thoughts, such as when playing a game of chess.


Explore further:
Mind’s quality control center found in long-ignored brain area

More information:
Zhenyu Gao et al. A cortico-cerebellar loop for motor planning, Nature (2018). DOI: 10.1038/s41586-018-0633-x

Journal reference:
Nature

Provided by:
Baylor College of Medicine

Tagged with:

About author

Related Articles