Glenn T Goodwin, PhD

Glenn T Goodwin, PhD Neuropsychology The field of Neuropsychology is concerned with the study of how the structure and function of the brain relates to behavior.

Its foundational approach is based on neuroscience and an information processing view of the mind. The main domains within the field are Research, Experimental and Clinical. Clinical Neuropsychology is the application of scientific and statistical methods in evaluation of intellectual, cognitive and emotional behavior. Neuropsychologists examine brain functioning by application of quantitative (ac

tuarial) and qualitative (clinical) assessment procedures in order to obtain a comprehensive study of neurocognitive and neurobehavioral status.

07/17/2025

How Brain Blood Flows to Power Your Thoughts

Although the brain accounts for just 2% of body weight, it consumes 20% of its energy, requiring a fast, efficient blood allocation system.

New research reveals that endothelial cells create a “communication highway” via gap junctions to direct blood flow to the right places in real time.

This elegant mechanism helps maintain cognitive performance while conserving energy.

The same system seems to falter in neurodegenerative diseases, contributing to cognitive decline.

The study also highlights potential for improving the interpretation of brain imaging tools like fMRI.

By uncovering this key mechanism, scientists may develop therapies that target blood flow regulation in the brain.

06/27/2025

Sleep’s Secret Sequence May Sculpt Our Memories Like a Garden

Sleep has long been recognized as essential for memory, but a new study reveals how the sequence of sleep stages may be the key.

Researchers propose that non-REM sleep strengthens newly formed memories while REM sleep prunes overlapping or redundant ones, keeping memories organized.

This process was observed in mouse brains following a conditioning experiment and confirmed through computational modeling of neural circuits.

The model also showed that reversing the sleep sequence caused memory degradation.

Acetylcholine levels and interactions between excitatory and inhibitory neurons played central roles in this dynamic.

The results point to a deeply conserved biological mechanism that helps the brain retain and refine important information during sleep.

06/17/2025

Brain Cells Tune to Multiple Rhythms Like a Neural Radio

A new study shows that brain cells don’t just send one type of signal—they can dynamically shift between different firing modes to process more than one brain rhythm at once.

Using voltage imaging and computational models, researchers demonstrated that hippocampal neurons use bursts to resonate with slower theta waves and single spikes to track faster gamma waves.

This dual-response system, termed interleaved resonance, may help the brain coordinate complex functions like spatial memory and decision-making.

The neurons' responsiveness is shaped by internal ion channels and the timing of their activity, allowing them to adapt to changing cognitive demands.

Importantly, this discovery helps bridge the gap between neural rhythms and behavior.

It also opens new possibilities for understanding and potentially correcting disrupted brain signaling in diseases like Alzheimer’s and epilepsy.

06/03/2025

Scientists are still debating whether the human brain is capable of growing new cells past childhood.

06/03/2025

Infant Brain Wiring Predicts Emotional Growth Months Before It Shows

A new study has shown that the architecture of a baby’s brain at three months may shape their emotional world months later.

Researchers used advanced MRI techniques to map the brain’s white matter microstructure and link it to future emotional traits.

Infants with more complexity in the left cingulum bundle showed better emotion regulation, while those with higher dispersion in the forceps minor became more emotionally reactive.

These patterns held even when accounting for environment and parental factors.

The results underscore the importance of early detection and tailored support for emotional development.

The work represents a breakthrough in understanding the neurobiological roots of emotional well-being.

06/01/2025

One Molecule to Sleep and Wake: A New Brain Switch Discovered

A new study has discovered that a single chemical messenger in the brain, FLP-11, is responsible for both initiating and ending sleep in C. elegans.

The molecule acts by activating a receptor called DMSR-1, which is found in both wakefulness and sleep neurons.

When FLP-11 reaches wakefulness neurons, it suppresses them, allowing the worm to fall asleep.

Later, when FLP-11 binds to its own sleep neuron, it shuts it down to wake the worm up.

This dual mechanism offers an efficient way to regulate sleep duration.

The findings could shed light on how the human brain transitions between sleep and wake states.

https://neurosciencenews.com/sleep-molecule-neuroscience-29180/

05/20/2025

Reading Fiction Boosts Empathy and Fights Loneliness

As loneliness becomes a widespread issue, some tech leaders are promoting AI companions—but research shows reading may be a more effective solution.

Studies have found that reading fiction can significantly reduce loneliness, improve wellbeing, and strengthen brain regions involved in empathy and social cognition.

Shared reading and book clubs foster emotional connection, while even solo reading activates brain areas tied to understanding others.

Surveys show that readers report less stress, better mental health, and stronger social bonds, especially during times of isolation like the pandemic.

Neuroimaging studies also link frequent fiction reading to increased activity in the dorsomedial prefrontal cortex, a region important for social behavior.

https://neurosciencenews.com/reading-emapthy-loneliness-28972/

05/06/2025

Shared Brain Circuit Links Insomnia, Anxiety, and Depression

A large brain imaging study of over 40,000 people has revealed overlapping and distinct neural abnormalities in insomnia, depression, and anxiety.

All three disorders were linked to reduced cortical surface area, smaller thalamic volume, and weaker connectivity between brain regions.

Despite these shared features, each condition also showed unique patterns: insomnia was tied to reward-related brain areas, depression to thinner areas involved in language and emotion, and anxiety to weakened amygdala reactivity and connectivity.

Importantly, when these abnormalities were mapped together, they converged on a common brain circuit—the amygdala–hippocampus–medial prefrontal cortex circuit.

This suggests that while the disorders manifest differently, they may share underlying vulnerabilities within this neural pathway.

Researchers hope these findings will help explain why treatments for one disorder sometimes improve others and could guide the development of more effective, integrated treatments.

https://neurosciencenews.com/insomnia-anxiety-depression-28804/

05/06/2025

Out-of-Body Experiences Offer New Clues About Consciousness

Out-of-body experiences (OBEs) remain one of the most intriguing and debated phenomena in consciousness research.

A new qualitative study focused on how individuals themselves interpret these experiences, rather than imposing scientific explanations.

Interviews with ten participants revealed that all perceived their OBEs as real, often describing them as more vivid than ordinary life.

While a few offered physiological explanations, many used metaphysical language, invoking ideas such as universal consciousness and other dimensions.

For some, OBEs were transformative, reducing fear of death and altering their worldview, especially among those who had multiple experiences.

The study highlights the need to integrate subjective experiences into scientific discourse and suggests that OBEs may hold important clues about the nature of consciousness.

https://neurosciencenews.com/out-of-body-experience-consciousness-28814/

04/30/2025

Brain Mechanisms Behind Why Some Individuals Are More Likely to Help

A new study reveals how brain activity and oxytocin signaling influence why some individuals are more likely to help others.

In rats, those that freed trapped peers had greater activation in brain regions tied to empathy and motivation.

These helpful rats also showed higher oxytocin receptor expression, suggesting that social bonding plays a key role in driving prosocial behavior.

Blocking oxytocin signaling reduced social friendliness, highlighting the hormone’s importance in forming attachments that support helping.

The findings suggest that caring about others, not just recognizing their distress, may be critical for prompting acts of kindness.

This research offers a deeper understanding of the biological roots of empathy and helping behavior across species.

https://neurosciencenews.com/oxytocin-prosocial-behavior-28668/

04/27/2025

Why Do Our Minds Sometimes Go Blank?

Mind blanking—moments when the mind feels empty or devoid of thoughts—is a common yet poorly understood mental state that differs from mind wandering.

Researchers now describe it as a distinct phenomenon with measurable neural and physiological signatures, including reduced brain signal complexity and slower, sleep-like brain waves.

These blanks often occur during prolonged attention tasks, after physical exertion, or with sleep deprivation, and are more frequent in individuals with ADHD or anxiety.

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