Tag

Brain Activity

All articles tagged with #brain activity

science13 days ago•3 min saved

Mouse Brain Signals Turn Viewed Clips Into Reconstructed Movies

Researchers used single‑cell recordings from the mouse visual cortex to recreate 10‑second videos the mice watched, by applying a dynamic neural encoding model and comparing predicted neuron activity to actual activity. The reconstructions, which improved when more neurons were included and were validated by pixel-level correlations, offer a closer look at how visual information is encoded in the brain and why neural representations can diverge from reality, with work published in eLife.

via SciTechDaily|

#brain-activity #mice #neuroscience

health-and-medicine1 month ago•9 min saved

Fasting reshapes brain signals and gut bacteria to support weight loss

A study of 25 obese adults found that an intermittent fasting–style diet produced about 7.6 kg of weight loss and metabolic improvements, while shifting gut bacteria (increases in Faecalibacterium prausnitzii, Parabacteroides distasonis, and Bacteroides uniformis; decreases in E. coli) and reducing activity in brain regions tied to appetite and reward. The results suggest a coordinated, two-way gut–brain axis in weight loss, though causality remains unproven and larger studies are needed.

via ScienceDaily|

#brain-activity #gut-microbiome #health-and-medicine

science-neuroscience1 month ago•4 min saved

Free and Forced Decisions Share the Same Brain Evidence Path

A new Imaging Neuroscience study finds that voluntary and forced choices unfold through remarkably similar evidence-accumulation processes in the brain: neural signals ramp up before a decision, with faster ramps for quick choices and slower ramps for slower ones, suggesting our brains weigh internal preferences and goals in the same automatic way across decision types, challenging simple notions of free will.

via SciTechDaily|

#brain-activity #decision-making #evidence-accumulation

science2 months ago•11 min saved

Imagination Refined: The Brain Carves Images by Quieting Its Own Noise

A new theory proposes that imagination works by dampening ongoing activity in early visual brain areas to carve familiar images from the brain’s background signals, rather than building them from scratch. This suppression-based view explains why mental images are often weaker than seeing, relates to conditions like aphantasia and hyperphantasia, and is supported by evidence linking imagined perception to reduced neural activity and by animal experiments showing small neuronal interventions can steer behavior.

via The Conversation|

#aphantasia #brain-activity #imagination

science4 months ago•6 min saved

Deep Sleep May Dampen Tinnitus, Oxford Study Suggests

Oxford researchers propose a link between tinnitus and sleep, suggesting the large brain waves of deep non-REM sleep can suppress tinnitus-related activity; ferret studies show tinnitus and sleep disruption occur together and that sleep dampens hyperactivity, indicating sleep could be a therapeutic target to interrupt the cycle of phantom ringing.

via ScienceAlert|

#brain-activity #non-rem-sleep #phantom-percepts

science6 months ago•2 min saved

Woman's MRI orgasm experiment uncovers surprising insights into the brain

A study led by Rutgers University recorded women orgasming inside MRI machines to understand brain activity during climax, revealing insights into pleasure and potential applications for those with orgasm difficulties.

via LADbible|

#brain-activity #mri #orgasm

health6 months ago•4 min saved

Homer1 Gene Discovery Paves Way for New ADHD Treatments

A groundbreaking genetic study suggests that reducing baseline brain activity by targeting the Homer1 gene could offer a new approach to treating ADHD and other neurodevelopmental disorders, shifting focus from stimulating to calming neural activity for improved attention.

via ScienceDaily|

#adhd #attention-treatment #brain-activity

science6 months ago•3 min saved

Life Flashes Before Our Eyes at Death

A 2022 study unexpectedly recorded brain activity during a patient's death, revealing that the brain may remain active and exhibit memory-like waves, such as gamma oscillations, suggesting that our lives might indeed flash before our eyes as we die, although findings are preliminary and based on a single case.

via My Modern Met|

#brain-activity #brain-waves #death

science6 months ago•4 min saved

Rare Syndrome Causes People to See Nonexistent Faces

Research shows that individuals with visual snow syndrome experience heightened face pareidolia, seeing faces in random patterns more frequently due to hyperexcitability in the visual cortex, which amplifies false perceptual signals and offers insights into how the brain interprets visual information.

via ScienceAlert|

#brain-activity #face-pareidolia #neurology

health6 months ago•4 min saved

New Study Reveals ADHD Medications Boost Alertness, Not Focus

New research shows that ADHD drugs like Adderall and Ritalin do not directly improve attention but instead increase brain arousal and the feeling of reward, making tasks seem more interesting and easier to focus on. The drugs primarily affect brain regions related to wakefulness and motivation, and their effectiveness can be influenced by sleep quality. This challenges previous beliefs about how these medications work and suggests a need to reevaluate their role in treating ADHD.

via Earth.com|

#adhd #attention #brain-activity

health6 months ago•4 min saved

Intermittent Fasting and Brain Health: Benefits and Myths

Research shows that intermittent energy restriction not only leads to weight loss but also causes coordinated changes in brain activity and gut microbiome, suggesting a complex interaction that may influence long-term weight management and obesity-related health issues.

via SciTechDaily|

#brain-activity #gut-microbiome #health

health6 months ago•5 min saved

New Genetic Insights Offer Hope for Improved ADHD Treatments

A study reveals that reducing background brain activity by targeting the Homer1 gene can improve focus, suggesting a new approach for treating ADHD by calming neural noise rather than stimulating brain circuits, with potential implications for other neurodevelopmental disorders.

via SciTechDaily|

#adhd #attention-treatment #brain-activity

science6 months ago•64 min saved

Significant Discrepancies Found in fMRI and BOLD Signal Interpretations

Recent research indicates that up to 40% of fMRI signals may not accurately reflect actual brain activity, highlighting significant issues with signal interpretation, noise, and the reliability of fMRI as a tool for understanding neural processes.

via Hacker News|

#blood-flow #brain-activity #fmri

science8 months ago•6 min saved

AI Converts Brain Activity Into Clear Text and Sentences

A new brain decoding technique called mind captioning can generate accurate, structured text descriptions of what a person sees or recalls by translating semantic brain activity into language without relying on traditional language areas, opening new possibilities for nonverbal communication and understanding mental content.

via Neuroscience News|

#brain-activity #brain-decoding #mind-captioning

science8 months ago•6 min saved

Cerebellum Activity Tied to Shyness

A study finds that shyness is linked to reduced spontaneous activity in the cerebellum, with this relationship being partly mediated by the Behavioral Inhibition System, highlighting the neural and motivational factors underlying shy behavior.

via PsyPost|

#brain-activity #cerebellum #neuroscience