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Human Brain

All articles tagged with #human brain

Decades-long debate over adult human neurogenesis nears resolution with new genetic evidence
science3 days ago

Decades-long debate over adult human neurogenesis nears resolution with new genetic evidence

The long-standing scientific debate over whether the human brain generates new neurons after childhood is approaching a consensus. While earlier studies using chemical markers yielded conflicting results, recent research using single-nucleus RNA sequencing and machine learning has identified dividing neural progenitors in adult human brains. This suggests the brain retains a capacity for regeneration, potentially opening new avenues for treating neurodegenerative diseases, though questions remain about the maturity and function of these cells.

via Nature|
#brain-regeneration#human-brain#medical-research
Scientists Decode Unique Neural Wiring Behind Human Memory
science1 year ago

Scientists Decode Unique Neural Wiring Behind Human Memory

Researchers at the Institute of Science and Technology Austria have discovered that the human hippocampus, particularly the CA3 region, has a unique neural connectivity compared to rodents. Using advanced techniques on brain tissue from epilepsy patients, they found that human neurons have sparser but more reliable connections, which may explain our superior memory capabilities. This study challenges existing models based on rodent brains and emphasizes the need for human-focused neuroscience research.

via Study Finds|
#hippocampus#human-brain#memory
Unique Brain Connections Boost Memory Retention
science1 year ago

Unique Brain Connections Boost Memory Retention

A study has discovered unique features of the human hippocampus, particularly in the CA3 region, which enhance memory storage and retrieval, differing from rodent brains. By examining living brain tissue from epilepsy patients, researchers found that human CA3 neurons have sparse but reliable connections, optimizing associative memory. This highlights the importance of studying human-specific brain features to improve understanding and treatment of memory-related conditions.

via Neuroscience News|
#hippocampus#human-brain#memory
Scientists Successfully Revive Frozen Human Brain Tissue After 18 Months
science-and-technology2 years ago

Scientists Successfully Revive Frozen Human Brain Tissue After 18 Months

Chinese researchers at Fudan University have successfully revived a human brain that was frozen for 18 months using a new cryopreservation method called MEDY. This breakthrough, published in Cell Reports Methods, preserves neural cell functionality and structural integrity, potentially revolutionizing research into neurological disorders and future human cryopreservation. The achievement has sparked significant interest and discussion about the future possibilities of cryonics.

via Global Times|
#cryonics#fudan-university#future-technology
Uncovering Unique Neuronal Origins in the Human Forebrain
science-and-research2 years ago

Uncovering Unique Neuronal Origins in the Human Forebrain

Researchers at UC San Diego have discovered unique inhibitory neurons in the human forebrain, challenging existing models of brain development that are based on studies of mice. The study provides insights into the cellular lineage of neurons in the human brain and may lead to improved models of brain function and disease. The findings have significant implications for understanding brain diseases such as epilepsy, schizophrenia, and autism, and could help generate better models of neurological disease.

via SciTechDaily|
#brain-development#human-brain#neuronal-origins
"12,000-Year-Old Well-Preserved Human Brains Challenge Soft Tissue Decay Assumptions"
science2 years ago

"12,000-Year-Old Well-Preserved Human Brains Challenge Soft Tissue Decay Assumptions"

A new study led by scientists from the University of Oxford has identified over 4,400 preserved human brains dating back as far as 12,000 years ago, challenging the assumption that the human brain is among the first organs to decay after death. The brains were found in various environments and were the only soft tissue structure that survived in otherwise completely skeletonized remains. The researchers believe there may be a specific soft tissue preservation mechanism for the central nervous system, possibly involving an interaction between brain molecules and the environment. This discovery represents an archive that could provide new insights into ancient cognition, major neurological disorders, and the evolution of nervous tissues and their functions.

via ScienceAlert|
#archaeology#evolution#human-brain
"Unprecedented Discovery: The Astonishing Power of the Human Brain Revealed"
science-and-technology2 years ago

"Unprecedented Discovery: The Astonishing Power of the Human Brain Revealed"

Scientists have discovered new cell messaging in the human brain, indicating that it may be more powerful than previously thought. Research on the brain's outer cortical cells revealed the firing of individual neurons using a combination of sodium and calcium ions, as well as unique electrical qualities in dendrites. This suggests that single neurons have greater computational power than previously believed, challenging the notion that complex networks are required for certain computational problems. The findings, published in Science, represent a significant advancement in understanding the human brain's capabilities.

via indy100|
#blood-brain-barrier#brain-research#human-brain
"Groundbreaking Discovery: Unprecedented Brain Signal Detected"
science-and-technology2 years ago

"Groundbreaking Discovery: Unprecedented Brain Signal Detected"

Scientists have discovered a unique form of cell messaging in the human brain, involving a novel 'graded' signal produced by cortical cells using calcium ions, leading to the identification of calcium-mediated dendritic action potentials (dCaAPs). This finding suggests that individual neurons in the human brain may have more computational power than previously thought, potentially allowing for exclusive OR (XOR) intersections. Further research is needed to understand the implications of this discovery and its potential applications in both neuroscience and technology.

via ScienceAlert|
#brain-research#cell-signaling#human-brain
"Neurotransmitters Influence Social Behavior in Economic Exchange"
neuroscience2 years ago

"Neurotransmitters Influence Social Behavior in Economic Exchange"

A study using electrochemistry to measure fast dopamine and serotonin fluctuations in the human brain during the ultimatum game found that overall levels of dopamine, but not serotonin, were higher in response to offers from human avatars compared to computer avatars. Additionally, relative changes in dopamine tracked trial-by-trial changes in offer value, resembling reward prediction error signaling, while relative changes in serotonin tracked the current offer value irrespective of the social context. This research provides insights into the roles of dopamine and serotonin in human social interaction at finer biological scales.

via Nature.com|
#dopamine#human-brain#neuromodulators
"Study Reveals Impact of Apple's Vision Pro and Other Headsets on Human Brain"
technology2 years ago

"Study Reveals Impact of Apple's Vision Pro and Other Headsets on Human Brain"

The Apple Vision Pro headset and similar devices from Meta are receiving praise for their advanced technology, but concerns are rising about the potential long-term effects on the human brain. Researchers warn that prolonged use of VR headsets could lead to significant changes in perception, causing issues such as simulator sickness, distorted vision, and social detachment. The passthrough video technology used in these headsets may further exacerbate these effects, potentially leading to a society where individuals experience different versions of reality. While the technology has exciting potential, experts urge caution and further research to understand its impact on individuals and society.

via Business Insider|
#apple#human-brain#passthrough-video