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Researchers Create 3D Atlas of Brain-Spinal Cord Connections

Signals relayed to motor neurons from the brain enable muscle movement, but these signals typically pass through spinal interneurons before they reach their destination. How the brain and this highly diverse group of "switchboard operator" cells are connected is poorly understood.

24 Dec 2024

ALS Stem Cell Model Reveals Increased Susceptibility to Cell Death

Amyotrophic lateral sclerosis (ALS) is a fast-progressing neurodegenerative disease with an average survival time of three years. In ALS, certain types of neurons called motor neurons that are required for muscle contractions die off, leading to progressive paralysis affecting most muscles of the body. The molecular causes of ALS are poorly understood, and effective treatments are missing.

20 Dec 2024

Chaperone Proteins Unveil Their Role in Neurotransmission

A team of researchers from the University of Massachusetts Amherst is the first to show how proteins called "chaperones" are vital in ensuring that neurons can transmit signals to one another. When this neurotransmission breaks down, devastating diseases such as Alzheimer's and Parkinson's along with many others, can occur.

19 Dec 2024

Researchers Uncover Ketamine’s Effect on Astrocytes in Zebrafish

The decades-old anesthetic ketamine could be a game changer for treating severe depression, but there are still many questions about how the drug works, including exactly how it affects the brain's cells and circuits.

18 Dec 2024

Unraveling the Mystery of Anglerfish’s Deadly Fishing Trick

Frogfish exhibit motor neuron migration in the CNS, revealing evolutionary adaptations in dorsal fins that enhance hunting efficiency and vertebrate evolution.

13 Dec 2024

New Discovery Redefines the Shape of Axons in Mammalian Brain Cells

Biology textbooks may need a revision, say Johns Hopkins Medicine scientists, who present new evidence that an armlike structure of mammalian brain cells may be a different shape than scientists have assumed for more than a century.

3 Dec 2024

Mathematical Approach Helps Understand Complex Neural Systems

In an article published in the scientific journal PNAS Nexus, researchers from the Neuromorphic Engineering Laboratory at the University of Liège reveal a fascinating brain mechanism: the ability of neurons to maintain reliable functions despite significant variability in their physiological components.

29 Nov 2024

Simplified Model Predicts Neuronal Activity in Zebrafish Gaze Control

Working with week-old zebrafish larva, researchers at Weill Cornell Medicine and colleagues decoded how the connections formed by a network of neurons in the brainstem guide the fishes' gaze.

25 Nov 2024

EPFL Brain Models Break New Ground in Understanding Neural Connectivity

The hippocampus is one of the most fascinating brain regions. Associated with the formation of memories, it also helps us to navigate through the world without getting lost.

23 Nov 2024

Astrocytes Play Key Role in Memory Storage and Recall, Study Shows

A study published in Nature by researchers at Baylor College of Medicine changes the way we understand memory.

7 Nov 2024

APOE4 and Microglia Together Drive Alzheimer's Protein Deposits

In healthy brains, immune cells called microglia patrol for damage, clearing away debris and harmful proteins. But in the presence of the APOE4 protein-;the most important genetic risk factor for Alzheimer's disease-;the same cells cause harmful inflammation and clumps of misfolded proteins, according to a new study by scientists at Gladstone Institutes.

5 Nov 2024

Novel Approach to Isolating and Quantifying EV Cargo for Disease Diagnosis

Parkinson's disease (PD) and Alzheimer's disease (AD) are examples of brain illnesses that begin to develop in patients far earlier than the onset of their initial clinical symptoms.

4 Nov 2024

Integrating Multiple Scales to Understand Brain Function

A long-standing goal of neuroscience is to understand how molecules and cellular structures on a microscale give rise to communication between brain regions at the macroscale. A study published in Nature Neuroscience now identifies, for the first time, hundreds of brain proteins that explain inter-individual differences in functional connectivity and structural covariation in the human brain.

1 Nov 2024

Simple Neural Circuit Controls Chewing and Appetite

Speaking, singing, coughing, laughing, yelling, yawning, chewing-;we use our jaws for many purposes. Each action requires a complex coordination of muscles whose activity is managed by neurons in the brain.

24 Oct 2024

Novel Gene Regulates Axon Regeneration in the Central Nervous System

A scientific investigation led by researchers at HKUST has uncovered promising avenues for treating injuries to the central nervous system, with findings published in Proceedings of the National Academy of Sciences.

23 Oct 2024

Mutant Neurons Show Accelerated Development in Mouse Brain

The mechanisms behind intellectual disabilities and autism remain largely unknown. However, researchers from the labs of Prof. Pierre Vanderhaeghen and Prof. Vincent Bonin at the VIB-KU Leuven Center for Brain & Disease Research and NERF have identified that mutations in the SYNGAP1 gene interfere with the extended development of human neurons, a process believed to be critical for normal cognitive function.

15 Oct 2024

Scientists Map the Entire Brain of a Fruit Fly

UC Santa Barbara neuroscientists have reconstructed the entire anterior visual pathway of a fruit fly, a complex series of connections between the insect's eyes and the navigation center of its brain. With the help of artificial intelligence and manual proofreading, systems biologist Sung Soo Kim's research group and collaborators worked out the relationships between more than 3,000 neurons with unprecedented detail.

9 Oct 2024

Scientists Successfully Map the Entire Fruit Fly Brain

A team of scientists supported by the National Institutes of Health (NIH)'s The BRAIN Initiative, including Davi Bock, Ph.D., Associate Professor of Neurological Sciences at UVM's Robert Larner, M.D. College of Medicine, recently made a substantial advancement in neurobiological research by successfully mapping the entire brain of Drosophila melanogaster, more commonly known as the fruit fly.

3 Oct 2024

New Tool START Enables Precision Mapping of Neuronal Connectivity

Scientists at the Salk Institute are unveiling a new brain-mapping neurotechnology called Single Transcriptome Assisted Rabies Tracing (START). The cutting-edge tool combines two advanced technologies-;monosynaptic rabies virus tracing and single-cell transcriptomics-;to map the brain's intricate neuronal connections with unparalleled precision.

1 Oct 2024

Two Alzheimer’s Genetic Risk Factors Trigger Harmful Inflammation in Females

Weill Cornell Medicine investigators have found that two genetic variants that confer high risk of Alzheimer's disease (AD) together trigger a harmful inflammatory response in the brain's immune cells, particularly in females, in a preclinical model.

1 Oct 2024