A new study reveals that older adults are more likely than younger people to interpret ambiguous facial expressions as happy rather than angry. Using brain imaging, researchers found that this positivity bias is linked to increased activity in the locus coeruleus — the brain’s tiny “blue spot” that regulates alertness and stress — and its […]
Older Adults See Ambiguous Faces as Happier Read More »
An international research team has mapped the millisecond-by-millisecond process by which nerve signals activate muscles, uncovering a previously unseen “primed” intermediate step. This breakthrough reveals that neuromuscular receptors move asynchronously—not in perfect unison as scientists long believed—redefining how communication between nerves and muscles is understood.
Hidden Primed Step in Nerve-Muscle Communication Found Read More »
Researchers have identified a new genetic cause of hereditary optic atrophy—a condition that leads to gradual vision loss—by discovering a previously unknown mutation in the PPIB gene. This gene helps proteins fold properly and ensures healthy mitochondrial function, both of which are disrupted in affected individuals.
Scientists Identify New Gene Behind Hereditary Vision Loss Read More »
New research reveals that child maltreatment leaves measurable biological “scars” on DNA, altering brain structure and function. Using a genome-wide epigenetic analysis, scientists identified four key methylation sites—ATE1, SERPINB9P1, CHST11, and FOXP1—linked to maltreatment.
Child Abuse Leaves Lasting Biological Scars on the Brain and DNA Read More »
A new study reveals that an overgrowth of Candida albicans, a common gut fungus, may alter the brain’s dopamine reward circuitry and influence alcohol consumption. Researchers found that as fungal populations increased, they triggered production of inflammatory molecules called PGE2, which crossed into the brain and changed dopamine signaling in the dorsal striatum.
Gut Fungus Found to Disrupt Brain’s Alcohol Reward Pathway Read More »
New research shows that neighborhood conditions — from pollution and housing to economic opportunity — may directly affect brain health and dementia risk. Analyzing brain scans and biomarkers from 679 adults, scientists found that people living in areas with higher social and environmental disadvantages showed signs of reduced brain thickness, altered blood flow, and white
Where You Live Could Shape Your Brain and Dementia Risk Read More »
A new study reveals how uniquely wired human brains can perceive the world in strikingly similar ways. Researchers recorded live neural activity in epilepsy patients and found that while each person’s neurons respond differently to the same image, the relationships between those neural responses remain consistent across individuals.
Why Your Brain and Mine Agree on What We See Read More »
A new study shows that combining touch with hearing profoundly intensifies emotional responses to music. Using a custom-built device that transforms sound into tactile vibrations, researchers found that people experienced more joy, connection, and reduced anxiety when they could both hear and feel the music.
Feeling the Music: Touch Amplifies Emotional Power of Sound Read More »
New research reveals that astrocytes — not neurons — are responsible for stabilizing emotional memories by re-engaging during recall. After an emotionally intense event, such as fear, specific astrocytes become biologically tagged with adrenoreceptors, making them responsive when the memory is later reactivated.
Astrocytes, Not Neurons, Hold the Key to Emotional Memory Read More »
A new study reveals how young synapses gradually mature to send chemical signals correctly — a process that can take days and depends on neural activity. Researchers tracked this in fruit flies by tagging newly formed synapses with fluorescent markers that changed color over time, allowing them to observe how proteins assemble to enable neurotransmitter
How Synapses Grow Up Read More »
