Tag

Dopamine

All articles tagged with #dopamine

science4 days ago•10 min saved

Big Rewards Fast-Track Learning by Extending Dopamine Signals

A study from HHMI’s Janelia shows that larger rewards speed learning in mice by boosting and prolonging dopamine signals, which enhances retention per repetition, day-to-day memory carryover, and especially engagement. This reduces variability between individuals and compresses training from days to hours, with perfect mastery possible in under 48 hours, potentially reshaping how neuroscience research trains animals and investigates complex cognition.

via Neuroscience News|

#dopamine #learning-speed #mice

science8 days ago•6 min saved

Dopamine-Driven Memory Rescue in Alzheimer's Mice

A mouse-model study shows dopamine levels in the entorhinal cortex drop to under 20% in Alzheimer's, crippling associative memory encoding. Restoring dopamine signaling—either by optogenetic stimulation or with Levodopa (L-DOPA)—rejuvenates neural activity and fully reverses cognitive deficits, suggesting a new therapeutic avenue that targets memory circuitry beyond traditional amyloid/tau approaches.

via Neuroscience News|

#alzheimers-disease #dopamine #entorhinal-cortex

health26 days ago•186 min saved

Dopamine tastes sweeter when you earn it

A CNN Health piece explains that dopamine fuels pleasure, reward and motivation, and that the brain responds more strongly to rewards when you have to work for them; constant dopamine hits from easy sources like social media, ultraprocessed foods, and binge TV can dull your baseline happiness and fuel addictive patterns. The science suggests paying off dopamine upfront through effortful activities—like exercise, learning a new skill, or meeting a friend in person—since these produce longer-lasting boosts and involve feel-good hormones such as oxytocin, serotonin and endorphins. Start with small goals and gradually increase effort to build a sustainable cycle of motivation and reward.

via CNN|

#dopamine #exercise #health

science1 month ago•6 min saved

Dopamine Disruption in the Memory Gate Sparks New Alzheimer's Therapy Route

UC Irvine researchers find dopamine loss in the entorhinal cortex impairs memory in Alzheimer’s models; restoring dopamine with Levodopa (and optogenetics) re-enables memory, signaling a fast-track, dopamine-based therapy path that could supplement protein-clearing strategies.

via Neuroscience News|

#alzheimers #dopamine #entorhinal-cortex

health1 month ago•32 min saved

Ozempic Side Effect Sparks Talk of an 'Ozempic Personality' and Motivation Shifts

Some Ozempic users report an “Ozempic Personality” marked by emotional flattening and reduced motivation for activities they once enjoyed (romance, exercise, music, socializing), a change researchers think may be linked to GLP-1 meds’ influence on dopamine. Dr. Drew frames this as a motivational shift rather than a true personality change and cautions that while there can be benefits, there are serious potential risks with Ozempic and similar drugs that require careful prescribing and monitoring.

via Yahoo|

#dopamine #glp-1 #health

health-and-wellness1 month ago•54 min saved

Glp-1 drugs and 'Ozempic personality': when weight loss comes with emotional blur

The Washington Post report highlights reports of emotional flattening and reduced motivation—often called 'Ozempic personality'—among some GLP-1 drug users (e.g., Ozempic/Wegovy). While many patients see weight loss and mood benefits, clinicians have documented anecdotes of dulled joy and motivation that sometimes improve when doses are lowered. The exact cause is unclear, with hypotheses ranging from pharmacological effects on dopamine-related reward pathways to psychological and lifestyle factors. Large studies show associations with mental-health changes and potential overall benefits in some cases, but causation isn’t established. Safety and personalized care remain the priority as researchers gather more data.

via The Boston Globe|

#anhedonia #dopamine #glp-1

music2 months ago•3 min saved

Robyn reimagines romance as chemistry on Sexistential

Robyn’s Sexistential reframes love as chemistry, shifting from romance to a science-flavored philosophy. Featuring tracks like Dopamine and Really Real and collaborations with Klas Åhlund, Joe Mount and Max Martin, the album blends retro electro-pop textures with new themes of solo parenthood and IVF, reimagining her discography without romance while insisting that feelings can be chemical and still deeply real.

via The Guardian|

#dopamine #electronic-pop #ivf

cognitive-science2 months ago•29 min saved

Timing Takes Center Stage: A New Rule for Pavlovian Learning

A Nature Neuroscience study in mice shows that learning rate scales with the time between rewards, not the number of cue–reward pairings, meaning total learning in a fixed period depends on timing. Dopamine signals tracked this time-based rule across appetitive and aversive conditioning, challenging traditional trial-based models and suggesting broader implications for biology and AI.

via PsyPost|

#cognitive-science #dopamine #neuroscience

science2 months ago•13 min saved

Dopamine in flux: rethinking the brain’s feel-good signal

Neuroscience is reevaluating dopamine beyond a simple reward signal as the once-dominant reward-prediction-error model faces challenges; new data show dopamine also encodes attention, threats, novelty, and action predictions, with some researchers proposing retrospective learning and broader theories, potentially reshaping understanding and treatment of ADHD and addiction.

via Nature|

#addiction #adhd #dopamine

science2 months ago•4 min saved

Dopamine Clues in Autism May Signal Parkinson's Risk Later

A small study using DaT SPECT scans in 12 young adults with autism found abnormal dopamine transporter behavior in a subset, suggesting disrupted dopamine processing could be linked to a higher Parkinson's risk decades later, though no current signs of disease or IQ differences were found. Researchers caution against drawing conclusions and aim to study larger groups to verify whether these transporter abnormalities could serve as an early biomarker for Parkinson's and inform preventative strategies.

via ScienceAlert|

#autism #basal-ganglia #dopamine

neuroscience2 months ago•10 min saved

Parenting circuits double as prosocial engines in mice

New work in mice shows that the medial preoptic area (MPOA) circuits governing parenting also drive prosocial allogrooming toward stressed peers, via overlapping neuronal ensembles and an MPOA–to–VTA pathway that modulates dopamine release in the nucleus accumbens. Activity‑dependent labeling reveals MPOA ensembles active during parenting are required for allogrooming, while MPOA neurons activated during prosocial acts are needed for pup grooming, suggesting shared neural substrates and that offspring‑care circuits may scaffold broader adult prosocial behavior.

via Nature|

#allogrooming #dopamine #mpoa

science2 months ago•13 min saved

Genes and culture shape why music gives some people goosebumps

New research finds that aesthetic chills—the goosebumps or shivers people feel when hearing music or viewing art—are partly heritable (about a third of the variance) but mostly shaped by culture and life experience (around 70%). Chills from music share genetic influences with chills from visual art and poetry, and brain dopamine-reward circuits light up during these moments, though there is no single 'goosebumps gene.' Openness to experience is a modest contributing factor.

via The Times|

#aesthetic-chills #dopamine #genetics

science3 months ago•6 min saved

Tirzepatide reduces alcohol reward in rodent study, hinting at AUD therapy

Rodents treated with tirzepatide (Mounjaro) drank more than half as much alcohol as controls, showed fewer relapse-like drinking episodes, and exhibited reduced alcohol-induced dopamine spikes in the brain’s reward center, the lateral septum. The drug also altered histone-related proteins, suggesting possible long-term neural changes. While promising, human trials are needed to confirm efficacy for alcohol use disorder, though tirzepatide’s established safety profile could speed future research.

via Neuroscience News|

#alcohol-use-disorder #dopamine #glp-1gip-dual-agonist

health-and-medicine3 months ago•5 min saved

Lab-grown dopamine cells aim to reboot movement in Parkinson’s patients

Researchers are testing implanted induced pluripotent stem cells engineered to become dopamine-producing neurons in the brains of Parkinson’s patients in a Phase 1 trial. Delivered via MRI-guided surgery into the basal ganglia, the goal is to restore dopamine production, improve motor function, and slow disease progression. The 12-person study (RNDP-001) is monitored for 12–15 months with long-term follow-up planned for up to five years to assess safety (e.g., dyskinesia, infection) and efficacy, and it has FDA fast-track designation.

via ScienceDaily|

#clinical-trial #dopamine #health-and-medicine

science3 months ago•7 min saved

Timing Trumps Repetition: The Brain Learns Faster with Sparse Rewards

A UCSF study shows the brain learns more efficiently when rewards are rare and spaced apart, with dopamine responses driven by the time between cue and reward rather than the number of repetitions. This challenges Pavlovian practice-as-learning and explains why cramming is less effective, while suggesting educational strategies and potential faster, sparse-learning approaches for AI.

via Neuroscience News|

#dopamine #education #learning