Tag: Neuron

  • Nation & World

    Human brain seems impossible to map. What if we started with mice?

    Harvard-led project seeks to create the first comprehensive diagram of every neural connection.

    6 minutes
    Microscopic image of brain with color-coded cells.
  • Nation & World

    Linking sight and movement

    Harvard neuroscientists look at how movement influences vision and perception.

    6 minutes
    Rat brain scan.
  • Nation & World

    How a zebrafish model may hold a key to biology

    Martin Haesemeyer set out to build an artificial neural network that worked differently than fish’s brains, but what he got was a system that almost perfectly mimicked the zebrafish — and that could be a powerful tool for understanding biology.

    5 minutes
    Researchers looking at zebrafish
  • Nation & World

    Sensors go undercover to outsmart the brain

    Harvard scientists have created brain implants so similar to neurons that they actually encourage tissue regeneration in animal models. They may one day be used to help treat neurological diseases, brain damage, and even mental illness.

    5 minutes
    Charles Lieber.
  • Nation & World

    More than a courier

    Now research suggests that a nerve cells’ axons may be making decisions on their own, challenging the dogma that the nucleus and cell body are the control centers of the neuron.

    6 minutes
    neurone string
  • Nation & World

    How to feel the heat

    A team of researchers was able to show how sensory neurons in the face detect temperature, and how this information is later passed on to the hindbrain of zebrafish, where it is processed to produce behavior.

    4 minutes
    Martin Haesemeyer, on left, and Florian Engerts
  • Nation & World

    Closer view of the brain

    A team of researchers has succeeded in imaging — at the nano scale — every item in a small portion of mouse brain. What they found, Lichtman said, could open the door to, among other things, understanding how learning alters the brain.

    5 minutes
  • Nation & World

    Creatures of habit

    The motor cortex is critical to learn new skills, but may not be needed to perform them, a new Harvard study says.

    6 minutes
  • Nation & World

    A new understanding of Alzheimer’s

    Using the principle of natural selection, researchers have outlined a new model of the disease suggesting that mitochondria — power plants for cells — might be at its center.

    6 minutes
  • Nation & World

    Addiction clue

    Harvard researchers find that a gene essential for normal brain development, and linked to autism spectrum disorders, also plays a critical role in addiction-related behaviors.

    2 minutes
  • Nation & World

    Inconsistent? Good

    Though variability is often portrayed as a flaw to be overcome, Harvard researchers now say that, in motor function, it is a key feature of the nervous system that helps promote better or more successful ways to perform a particular action.

    6 minutes
  • Nation & World

    Something doesn’t smell right

    Harvard scientists say they’re closer to unraveling one of the most basic questions in neuroscience — how the brain encodes likes and dislikes — with the discovery of the first receptors in any species evolved to detect cadaverine and putrescine, two of the chemical byproducts responsible for the distinctive — and to most creatures repulsive…

    5 minutes
  • Nation & World

    Deconstructing motor skills

    Harvard researchers have found that the brain uses two largely independent neural circuits to learn spatial and temporal aspects of complex motor skills.

    4 minutes
  • Nation & World

    ‘Brainbow,’ version 2.0

    Led by Joshua Sanes and Jeff Lichtman, a group of Harvard researchers has made a host of technical improvements in the “Brainbow” imaging technique.

    3 minutes
  • Nation & World

    A look inside the lab

    The Faculty of Arts and Sciences’ Division of Science recently relaunched its “Science Research Lecture Series,” aimed at introducing the broader local community to research conducted by Harvard faculty members. The talks will be held once a month in the Science Center, and will be open to the public.

    3 minutes
  • Nation & World

    Environment counts, Alzheimer’s research suggests

    A new study led by Harvard Medical School Professor Dennis Selkoe provides specific, pre-clinical scientific evidence supporting the concept that prolonged and intensive stimulation by an enriched environment may have beneficial effects in delaying one of the key negative factors in Alzheimer’s disease.

    3 minutes
  • Nation & World

    Linking insulin to learning

    Work led by Yun Zhang, associate professor of organismic and evolutionary biology, shows how the pathway of insulin and insulinlike peptides plays a critical role in helping to regulate learning and memory.

    3 minutes
  • Nation & World

    Sophisticated worms

    In a new study of worm locomotion, researchers show that a single type of motor neuron drives an entire sensorimotor loop.

    4 minutes
  • Nation & World

    A fresh look at mental illness

    In a paper published in Neuron, Joshua Buckholtz and co-author Andreas Meyer-Lindenberg identify a biological reason for why many mental disorders share similar symptoms, a situation that makes diagnosis challenging.

    5 minutes
  • Nation & World

    The growing brain

    As reported on June 7 in the journal Neuron, a team of researchers led by Professor Jeff Lichtman has found that just days before birth mice undergo an explosion of neuromuscular branching. At birth, the research showed, some muscle fibers are contacted by as many as 10 nerve cells. Within days, however, all but one…

    6 minutes
  • Nation & World

    Tracing the brain’s connections

    A team of researchers is using a genetically modified version of the rabies virus to create the first comprehensive list of inputs that connect directly to dopamine neurons in two regions of the brain.

    4 minutes
  • Nation & World

    Unraveling the secrets of the epilepsy diet

    Researchers at Harvard Medical School and Harvard-affiliated Dana-Farber Cancer Institute have identified a protein that plays a key role in the long-mysterious effectiveness of an extremely low-calorie, high-fat, low-carbohydrate diet in suppressing epileptic seizures.

    4 minutes
  • Nation & World

    Exploring roots of hunger, eating behaviors

    Synaptic plasticity — the ability of the synaptic connections between the brain’s neurons to change and modify over time — has been shown to be a key to memory formation and the acquisition of new learning behaviors. Now research reveals that the neural circuits controlling hunger and eating behaviors are also controlled by plasticity.

    6 minutes
  • Nation & World

    Brain navigation

    Hanspeter Pfister, an expert in high-performance computing and visualization, is part of an interdisciplinary team collaborating on the Connectome Project at the Center for Brain Science. The project aims to create a wiring diagram of all the neurons in the brain.

    5 minutes
  • Nation & World

    ‘Circuits of sense and sensibility’

    A Harvard biologist succeeds in mapping a neural network for learned olfactory behavior, using a roundworm model to trace the dislike of a particular smell to the reaction that avoids it.

    4 minutes
  • Nation & World

    Doing the neuron tango

    A group of Harvard Stem Cell Institute researchers in the Department of Stem Cell and Regenerative Biology has discovered that excitatory neurons control the positioning of inhibitory neurons in the brain in a process critically important for generating balanced circuitry and proper cortical response.

    4 minutes
  • Nation & World

    The nose knows

    Harvard researchers have shed light on how the sense of smell works to induce behavior, linking patterns of electrical spikes in the brain to behavior in laboratory animals.

    3 minutes
  • Nation & World

    What’s right for me?

    In a new study, Harvard scientists find that humans can make difficult moral decisions using the same brain circuits as those used on more mundane choices such as money or food.

    4 minutes