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Archive for the ‘neuroscience’ category: Page 13

Dec 11, 2024

Scientists ‘write’ new information into the human brain with MRI

Posted by in categories: biotech/medical, neuroscience

The new study demonstrates the ability to learn new skills without conscious effort.


Researchers have developed a groundbreaking technique using brain imaging and neurofeedback to induce learning without conscious effort.

Dec 11, 2024

Rethinking the brain pacemaker: How better nanocomposites can improve signals

Posted by in categories: biotech/medical, mobile phones, nanotechnology, neuroscience

Two years ago, a medical professional approached scientists at the University of Tabriz in Iran with an interesting problem: Patients were having headaches after pacemaker implants. Working together to investigate, they began to wonder if the underlying issue is the materials used in the pacemakers.

“Managing that affects patients is crucial,” author Baraa Chasib Mezher said. “For example, a person with a may experience interference from external electrical fields from phones or the sounds of cars, as well as various electromagnetic forces present in daily life. It is essential to develop novel biomaterials for the outlet gate of brain pacemakers that can effectively handle .”

In an article published this week in AIP Advances, Mezher, who is an Iraqi doctoral student studying in Iran, and her colleagues at the Nanostructured and Novel Materials Laboratory at the University of Tabriz created organic materials for brain and heart pacemakers, which rely on uninterrupted signal delivery to be effective.

Dec 11, 2024

Neurosurgeons unravel the distinct nerve wiring of human memory

Posted by in category: neuroscience

The black box of the human brain is starting to open. Although animal models are instrumental in shaping our understanding of the mammalian brain, scarce human data is uncovering important specificities.

In a paper published in Cell, a team led by the Jonas group at the Institute of Science and Technology Austria (ISTA) and neurosurgeons from the Medical University of Vienna shed light on the human hippocampal CA3 region, central for memory storage.

Many of us have relished those stolen moments with a grandparent by the fireplace, our hearts racing to the intrigues of their stories from good old times, recounted with vivid imagery and a pinch of fantasy.

Dec 11, 2024

Why Do Gliomas Tend To Recur in the Brain?

Posted by in category: neuroscience

First look at neuron-tumor connections illuminates formation, spread.

Dec 11, 2024

Forget Black Holes — White Holes Would Break Your Puny Brain

Posted by in categories: cosmology, evolution, information science, neuroscience, singularity

Black holes have long fascinated scientists, known for their ability to trap anything that crosses their event horizon. But what if there were a counterpart to black holes? Enter the white hole—a theoretical singularity where nothing can enter, but energy and matter are expelled with immense force.

First proposed in the 1970s, white holes are essentially black holes in reverse. They rely on the same equations of general relativity but with time flowing in the opposite direction. While a black hole pulls matter in and lets nothing escape, a white hole would repel matter, releasing high-energy radiation and light.

Despite their intriguing properties, white holes face significant scientific challenges. The laws of thermodynamics, particularly entropy, make it improbable for matter to move backward in time, as white holes would require. Additionally, introducing a singularity into the Universe without a preceding collapse defies current understanding of cosmic evolution.

Dec 11, 2024

Ancient Egyptians Got High to Seek Transcendence Through Altered States of Consciousness, Archaeologists Say

Posted by in category: neuroscience

Now we have proof that people drank psychotropic compounds in a carefully prepared concoction, to connect with the deity called Bes.

Dec 11, 2024

Diets That Reduce Brain Iron May Delay Cognitive Decline

Posted by in categories: life extension, neuroscience

Summary: New research suggests that certain nutrients may lower iron buildup in the brain, a factor linked to cognitive decline in aging. Excess non-heme iron, which accumulates over time, contributes to oxidative stress and can impair memory and executive function.

Over three years, participants with higher intake of antioxidants, vitamins, and iron-chelating nutrients showed less brain iron accumulation and better cognitive performance. These findings highlight the potential of diets like the Mediterranean or DASH to support brain health and combat age-related cognitive decline.

Dec 11, 2024

New neuroscience research upends traditional cognitive models of reading

Posted by in category: neuroscience

A new study finds that the left posterior inferior frontal cortex activates within 100 milliseconds during reading, playing a critical, early role in turning text into speech, challenging traditional models that assumed a slower, step-by-step process.

Dec 11, 2024

New look at dopamine signaling suggests neuroscientists’ model of reinforcement learning may need to be revised

Posted by in categories: education, food, neuroscience

Dopamine is a powerful signal in the brain, influencing our moods, motivations, movements, and more. The neurotransmitter is crucial for reward-based learning, a function that may be disrupted in a number of psychiatric conditions, from mood disorders to addiction.

Now, researchers led by MIT Institute Professor Ann Graybiel have found surprising patterns of dopamine signaling that suggest neuroscientists may need to refine their model of how occurs in the brain. The team’s findings were published recently in the journal Nature Communications.

Dopamine plays a critical role in teaching people and other animals about the cues and behaviors that portend both positive and negative outcomes; the classic example of this type of learning is the dog that Ivan Pavlov trained to anticipate food at the sound of bell.

Dec 11, 2024

Implant made with living neurons connects to mouse brains

Posted by in category: neuroscience

In a unique demonstration of brain implants that incorporate living cells, the devices were able to connect with the brains of live mice.

By Jeremy Hsu

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