Research · Neuroscience · Safety
Follow developments in nootropics and brain research with their sources and limitations. We explain what a new finding says, and what it cannot establish.
128 published articles
Research
A study tested 120 younger and older adults; 117 entered prospective-memory analyses. Mood changes and intrusive thoughts were associated with remembering intended actions, but the results do not establish a causal mechanism or a treatment for memory problems.
neuroscience
An October 1 editorial introduces a special issue on how neurotechnology links brain research, assistive devices and questions about data governance; it is an editorial overview, not a new experiment.
Research
MRI analyses in BioFINDER-2 and ADNI linked Alzheimer’s pathology and age to different whole-cortex connectivity gradients. The cohort findings describe associations and do not establish a diagnostic test or causal mechanism.
Research
A crossover trial analyzed 26 older adults after four-week periods of a blackcurrant, L-theanine and pine-bark blend or placebo. Attention-task false alarms declined, but memory and fatigue findings were not significant after multiple-testing correction; the blend cannot isolate an ingredient.
Research
A retrospective study reported AUCs of 0.822 internally and 0.742 in an external cohort for a TabPFN model. The authors say prospective multicenter validation is needed before clinical use.
neuroscience
Recordings during narrative listening linked distributed hippocampal activity patterns to word semantics, including after analyses accounted for phonetics and grammar.
Research
A 14-day trial randomized 96 adults to black cardamom extract, caffeine, their combination or placebo; 85 entered the final analysis. Reported test gains need independent replication and do not establish lasting cognitive benefit.
neuroscience
High-density recordings during awake surgery found shared planning signals and distinct sensorimotor patterns for imagined versus spoken syllables, a result that may inform future speech interfaces.
Research
Two experiments using low-resolution real-life images found a congruency benefit when masked faces were encoded in the first experiment, but not the second. Accuracy was modest overall.
Research
Experiments in mice found that bacterial indole signaling influenced post-stroke immune activity and brain injury. A human stroke cohort showed an association between bacterial tnaA abundance and poorer outcomes, but the mechanism remains unproven in people.
neuroscience
A cross-species analysis of brain recordings found shorter local neural timescales and weaker interregional synchrony under anesthesia; thalamic stimulation reversed the pattern in macaques.
neuroscience
An animal-device study tested a wireless transcranial stimulator powered by radiative radio waves; it maintained output across a cage and induced circling when aimed at a motor region.