Tag

Eeg

All articles tagged with #eeg

science14 days ago•6 min saved

Xi–αNET Connects Brain Wiring to EEG Rhythms Across the Lifespan

A multinational study introduces Xi–αNET, a generative model that links EEG signals (the background ξ and alpha rhythms) to the brain’s physical wiring and axonal conduction delays across ages 5–100 using the HarMNqEEG dataset. The findings show alpha frequency scales with myelin-driven conduction speed, producing a U-shaped trajectory of conduction delays with age and slower rhythms in older adults; the model also detects Parkinson’s-related alpha slowing, highlighting potential EEG-based brain-health benchmarks and early disease flagging via normative charts.

via Neuroscience News|

#aging #eeg #myelin

science17 days ago•6 min saved

Green Time, Brighter Minds: Nature Lowers Negative Emotions Across Real, VR, and Imagined Environments

A meta-analysis of 33 studies with 2,101 participants finds exposure to nature—outdoors, virtual reality, or imagined scenes—reduces negative emotions and supports brain health, with EEG and other neuroimaging data showing a more balanced emotional state. The researchers advocate integrating ‘Nature Rx’ into urban design to protect the population’s brain capital as urbanization rises.

via Neuroscience News|

#eeg #mental-health #nature

science17 days ago•5 min saved

Immersive Dreaming Elevates Perceived Restfulness

A new PLOS Biology study with 44 adults shows that feeling of deep sleep isn’t governed only by slow brain waves. During repeated awakenings in NREM2, immersive, emotionally intense dreams were linked to a stronger subjective sense of deep sleep, even when wake-like brain activity was present, while abstract, thought-like dreams correlated with shallower sleep. This suggests the dream experience itself can shape perceived sleep depth and may help explain variability in restfulness across different sleep durations.

via Neuroscience News|

#dreams #eeg #nrem2

neuroimaging22 days ago•28 min saved

Psilocybin reshapes brain rhythms and connectivity, predicting psychedelic intensity

An EEG study of 25 healthy volunteers shows psilocybin shifts the brain from a resting state to a dynamically engaged pattern by reducing slow theta/alpha power and increasing fast beta/gamma activity, with enhanced connectivity in the default mode network and parietal networks that correlates with the intensity of the psychedelic experience. Baseline fast-wave activity in frontal/emotional regions also predicted response to the drug. Using a double-blind, randomized crossover design (10–20 mg psilocybin vs placebo), researchers highlight potential biomarkers to guide psychedelic-assisted therapies, while noting limitations from the small, healthy-sample size and the need for clinical population studies and autonomic markers like heart-rate variability.

via PsyPost|

#brain-rhythms #default-mode-network #eeg

science25 days ago•4 min saved

ADHD Inattention Linked to Wakeful 'Local Sleep' Brain Bursts

In a study of 63 adults (32 with ADHD, 31 controls), ADHD participants showed more sleep-like slow waves during a sustained attention task—especially in fronto-central brain regions—and these waves predicted missed responses and variable reaction times. The findings support the idea of 'local sleep' during wakefulness as a neural mechanism for ADHD inattention and point to sleep-based interventions and EEG biomarkers, though causality isn’t proven and the results come from a lab task.

via Technology Networks|

#adhd #attention #eeg

neuroscience1 month ago•26 min saved

Breathing rhythms may choreograph memory retrieval

New findings in The Journal of Neuroscience report that breathing timing can influence memory retrieval. In 18 young adults, EEG and a breath sensor linked brain alpha/beta oscillations and memory reactivation to the respiratory cycle: recalling an image cue was more accurate when the cue appeared during inhalation, with memory processing aligning to exhalation. Stronger breath-brain coupling predicted better memory scores, suggesting respiration acts as a scaffold for episodic retrieval. Authors caution that effects are modest and causality isn’t proven, and results reflect spontaneous breathing rather than deliberate breathing exercises.

via PsyPost|

#breathing #eeg #memory

health-and-medicine2 months ago•7 min saved

Brain's self-voice misfire explains hearing voices in schizophrenia

New UNSW research provides the strongest evidence to date that auditory hallucinations in schizophrenia arise when the brain mispredicts its own inner speech, treating thoughts as external voices. EEG tests across three groups (recent AVH, other schizophrenia patients, and healthy controls) showed healthy individuals reduce brain activity for matched imagined/actual sounds, while those currently hearing voices show the opposite pattern, suggesting a disruption in the brain's prediction mechanism and offering a potential biomarker for psychosis and earlier detection.

via ScienceDaily|

#auditory-hallucinations #biomarkers #eeg

health3 months ago•7 min saved

Potential Link Between Brain Receptor and Autism Uncovered

Yale researchers found that autistic adults have reduced availability of the mGlu5 glutamate receptor across the brain, supporting the theory that an imbalance in excitatory and inhibitory signaling contributes to autism traits. EEG data correlated with receptor levels suggest a potential accessible diagnostic tool, and targeting mGlu5 could lead to new treatments. The study offers rare molecular insight into autism, with future research planned in children and individuals with intellectual disabilities.

via Neuroscience News|

#autism #brain-receptors #eeg

technology3 months ago•5 min saved

Brain Gear: The Latest Trend in Wearable Tech

New wearable devices that read brain waves using EEG technology are emerging, aiming to improve sleep, boost productivity, and enable brain-controlled devices, with applications ranging from health treatment to gaming, raising privacy concerns about neuro data security.

via WIRED|

#bci #brain-waves #eeg

science5 months ago•2 min saved

Brain Scans Identify Critical Moments Before Sleep

A study using brain scans reveals that falling asleep involves a sudden 'tipping point' about 4.5 minutes before sleep begins, allowing for precise prediction of sleep onset and potential applications in diagnosing sleep disorders and monitoring brain health.

via ScienceAlert|

#brain #eeg #neuroscience

science5 months ago•2 min saved

Decoding the Brain's Activity During Sleep and Dreaming

A large-scale international study challenges the idea that dreaming only occurs during REM sleep, showing that parts of the brain remain alert and can generate dreams during deep NREM sleep, with AI models being developed to detect dreams based on brain activity. This research broadens understanding of consciousness during sleep and has potential medical applications, including early detection of cognitive disorders like Alzheimer's.

via Indian Defence Review|

#artificial-intelligence #dreams #eeg

science5 months ago•2 min saved

Disconnected Brain Regions Enter Sleep-Like States During Wakefulness

Surgically disconnecting part of the brain in children with epilepsy causes that region to exhibit sleep-like slow brain waves, even while the person remains awake, raising questions about the nature of consciousness and brain activity after disconnection.

via Nature|

#brain #consciousness #eeg

science5 months ago•5 min saved

Disconnected Brain Hemispheres Show Sleep-Like Activity During Wakefulness in Epilepsy Patients

A study found that surgically disconnected brain hemispheres in awake epilepsy patients exhibit persistent sleep-like slow-wave activity for years, suggesting reduced or absent consciousness, and raising questions about the nature of awareness in isolated neural tissue.

via Neuroscience News|

#brain #consciousness #disconnected-cortex

health-and-science5 months ago•2 min saved

Music That Reduces Motion Sickness by Half, Science Finds

A study found that soft and joyful music can significantly reduce motion sickness, with soft music decreasing symptoms by 56.7% and joyful music by 57.3%, offering a simple, non-invasive way to improve travel comfort.

via Yahoo|

#brain-activity #eeg #health-and-science

health6 months ago•7 min saved

Brain Test May Predict Sexual Side Effects in Antidepressant Users

Early research suggests a brain test measuring serotonin levels via EEG could predict antidepressant-related sexual side effects, potentially allowing for more personalized depression treatment to minimize these issues.

via CNN|

#antidepressants #brain-test #eeg