#neuroscience

Indian scientists have created the most detailed 3D atlas of the human brainstem, mapping its complex neural structures with unprecedented resolution. The atlas, named Bhāvānā, uses advanced imaging techniques and is expected to aid research into neurological disorders such as Parkinson's and Alzheimer's disease.

Spending time in microgravity causes significant changes to the human brain, including fluid shifts that can alter its shape and position within the skull. These changes may persist for months after returning to Earth, affecting vision, motor skills, and cognitive function. Scientists are studying these effects to better prepare astronauts for long-duration space missions.

Columbia researchers discovered a neural circuit in the visual cortex that integrates attention and expectation signals with sensory input, explaining how the brain combines thought with vision.

This review explores the neurobiological mechanisms underlying cognitive fatigue, focusing on how it influences effort-based decision-making. It discusses the roles of brain regions such as the anterior cingulate cortex and striatum, along with neurotransmitters like dopamine and adenosine, in mediating the subjective experience of fatigue and the willingness to exert mental effort.

Neuroloop presents a wireless, bidirectional brain-computer interface designed to bridge the gap between neural recording and stimulation, enabling real-time closed-loop neurostimulation for research and potential therapeutic applications.

A new study suggests that social media may reshape how the brain evaluates mental effort, potentially reducing tolerance for cognitively demanding tasks. Researchers found that frequent digital media consumption could recalibrate the brain's cost-benefit analysis, making sustained focus feel more costly and less rewarding.

An interactive online resource provides a structured overview of major theories of consciousness, allowing users to explore and compare different scientific and philosophical perspectives on the nature of conscious experience.

A landscape grid categorizes major theories of consciousness, including Integrated Information Theory, Global Workspace Theory, Higher-Order Thought Theory, and Predictive Processing, mapping them across dimensions such as phenomenal vs. access consciousness and cognitive vs. neural foundations.

MIT researchers have discovered that the brain's language network extends beyond classical language areas into regions previously associated with higher cognition, such as the prefrontal cortex and default mode network. The findings suggest language processing involves a broader neural system than traditionally assumed.

A developer documents how they 3D printed a detailed human brain model from MRI data using open-source tools and a consumer printer, covering segmentation, model conversion, and printing challenges.

These notes summarize "Principles of Neural Design" by Peter Sterling and Simon Laughlin, covering how biological brains achieve efficiency through principles like minimizing wiring, energy use, and signal noise while maximizing computational power per unit resource.

Researchers found that under anesthesia, brain activity shifts to a pattern of slow, coordinated waves that block communication between regions, challenging prior assumptions about how consciousness is lost. The study suggests consciousness requires not just activity but specific patterns of neural communication.

The article explores the theory that consciousness may emerge from the brain's working memory system, which temporarily holds and manipulates information. It discusses scientific hypotheses linking working memory capacity to conscious awareness, and how this connection could help explain the mysterious nature of subjective experience.

Neuralink demonstrates a transdural procedure where its surgical robot successfully implants a brain-computer interface (BCI) chip into a patient, marking a key step in the company's goal of enabling direct neural communication for medical applications.

Scientists used CT scanning to identify a preserved fossilized brain in a 319-million-year-old fish fossil, pushing back the oldest known vertebrate brain by hundreds of millions of years. The find reveals surprising anatomical similarities to modern fish brains and highlights the potential for soft tissue preservation in unlikely fossils.

Split-brain patients, whose corpus callosum was severed to treat epilepsy, show that each hemisphere can process information independently, with separate perceptions and intentions, challenging the idea of a unified conscious self.

Researchers successfully reversed autism-like symptoms in adult mice by repairing shortened nerve cell structures called dendritic spines. The treatment restored social behaviors and reduced repetitive actions, offering a potential new avenue for understanding and treating autism spectrum disorders in humans.

This video argues that simulating human brains with computers could lead to major advances in AI and neuroscience, though it acknowledges the immense technical challenges involved in such an undertaking.

Meta's Brain2Qwerty AI decodes silent speech from non-invasive MEG/EEG brain activity, reconstructing typed sentences. It offers a potential communication path for people who cannot speak or type.

The article discusses a visual phenomenon where the way our eyes actually process light (from a mix of bright and dim areas) differs from how we perceive an image, using a folded-card optical illusion as an example. It highlights the discrepancy between physical eye function and visual perception, suggesting our eyes behave more like high-end cameras than simple light-measuring devices.

Play is essential for children's cognitive, social, and emotional development. Research shows that play helps build brain structure, improves problem-solving skills, and fosters creativity. UNICEF highlights that through play, children learn to interact with others, manage emotions, and develop resilience.

A study from Trinity College Dublin found that slow, controlled breathing (at a rate of about five breaths per minute) can rewire brain networks linked to decision-making, attention, and emotional regulation. Participants who practiced slow breathing made more cautious choices and showed improved cognitive control, suggesting that breathwork can directly influence brain function and behavior.

A new study shows that literacy fundamentally reshapes the brain's neural networks, enhancing cognitive functions beyond just reading. Researchers found that learning to read strengthens connections between language and visual processing regions, leading to improved attention, memory, and analytical thinking skills that extend far beyond the act of reading itself.

Researchers reconstructed movie clips from neural activity recorded in the mouse visual cortex, demonstrating how brain activity can be decoded to recreate visual experiences.

The June edition covers recent neuroscience findings on brain plasticity, optogenetic advances, and memory consolidation during sleep, along with new tools for mapping neural circuits and understanding neurological disorders.

Studies of split-brain patients, whose corpus callosum has been severed to treat severe epilepsy, reveal that the two hemispheres can process information independently and even act with separate intentions. These findings challenge traditional views of a unified consciousness, suggesting that consciousness may not be a single, integrated phenomenon but can be fragmented under certain conditions.

Researchers are exploring how to engineer brain-to-brain synchronization, or "being on the same wavelength," as a way to enhance human connection and collaboration. The research examines whether science can deliberately create states where people's brain activity aligns, potentially improving teamwork, communication, and empathy.

A new study suggests that the heartbeat influences how the brain processes sensory information, with neural activity fluctuating in sync with cardiac rhythms. The research indicates that the brain's response to external stimuli changes depending on the phase of the heartbeat, potentially affecting perception and cognition.

This podcast episode explores the concept of "the sparkling deep," a term describing the vast, vibrant, and largely unexplored microbial life in the world's oceans. The episode discusses how these microorganisms play a crucial role in Earth's climate, nutrient cycles, and even the evolution of life, highlighting the growing scientific interest in understanding this hidden world.

The article explains that chronic pain can persist even after an injury has healed, as the brain continues to send pain signals due to altered neural pathways. It highlights that treatments are shifting from purely physical approaches to include pain education, cognitive behavioral therapy, and techniques that help patients "unlearn" pain by retraining the brain's perception.