TL;DR: In four online experiments with Chinese university students, a study-app assistant with a friendly face or chatty wording led to more positive feelings than a plain version. The boost was bigger in students who felt lonelier. Key Findings 4 experiments, 741 students: Each saw either a human-like or a plain study assistant. Happier with …
TL;DR: A new AI model that combines brain and muscle signals kept recognizing hand grips better than rival models when the muscle signals were artificially weakened to mimic fatigue. At the heaviest weakening, though, brain signals alone did better than any combined model. Key Findings Recordings from 25 healthy adults: Brain (EEG) and forearm muscle …
TL;DR: In female mice without ovaries, a model of menopause, the osteoporosis drug raloxifene and the hormone progesterone each protected brain dopamine from a toxin that mimics Parkinson’s. Giving both together worked no better than either alone. Key Findings Toxin cut dopamine by 57%: In the movement-control area of untreated mice. Each drug prevented the …
TL;DR: Alzheimer’s-model mice fed very salty chow for 6 months had altered gut bacteria, more brain inflammation and plaques, and more anxious behavior than mice on normal chow. It’s a mouse study, and the gut-to-brain link was not proven. Key Findings 8% vs 0.4% salt for 6 months: Male Alzheimer’s-model mice, about 40 per diet …
TL;DR: Eleven Indian children whose parents had addiction or serious mental illness all completed 8 sessions of brain-activity feedback training with no side effects. Their brain signals and thinking scores did not change clearly, and there was no comparison group. Key Findings 11 children, aged 6 to 12: 9 had a parent with a substance …
TL;DR: In a 40-person stroke rehab trial, people who did video-game balance training with a tight cuff on the weak thigh improved balance, walking and leg strength more over 4 weeks than people doing the same training without the cuff. The trial was small, short and had no fake-cuff comparison. Key Findings 40 stroke patients, …
TL;DR: Mouse studies of spinal muscular atrophy have reported anywhere from no loss to 60% loss of motor neurons, and a German-American team found that which slice of spinal cord gets counted explains much of that spread. Counting the right segments with a reliable stain gave clearer pictures of three mouse models. Key Findings 75 …
TL;DR: A Swedish study of 42 people with depression found no link between the brain’s main calming chemical, GABA, and slowed movement, early waking or poor appetite. The researchers measured GABA with two kinds of scans, but most patients had fairly mild versions of these symptoms. Key Findings No link with slowed movement: Neither observer …
TL;DR: In 86 people from one hospital in China, those with Parkinson’s and mild thinking problems showed changes in how water moves through parts of the hippocampus, a memory center. The hippocampus was not measurably smaller, suggesting a diffusion scan may pick up changes that size alone misses. Key Findings No size difference: None of …
TL;DR: Thin nerve fibers in the mouse brain are not smooth tubes but look like strings of tiny pearls, a shape set by the physics of their outer membrane. Changing that shape with drugs or heavy activity sped up or slowed down nerve signals by roughly 14% to 28% in mouse brain slices. Key Findings …
