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Sleep loss hijacks brain's activity during learning

A new study shows that getting only half a night's sleep hijacks the brain's activity during learning and memory consolidation, leading to increased vulnerability to conditions like anxiety and posttraumatic stress disorder. The research found that even partial sleep deprivation can be worse than no sleep at all.

What lies between grey and white in the brain

A multidisciplinary team has successfully visualized superficial white matter in living human brains using high-field MRI. The study reveals that this region contains significant amounts of iron, necessary for myelination, which can occur throughout lifespan but is predominant during development.

SourceMax-Planck-Gesellschaft·JournalScience Advances·DateOct 19, 2020

Facemask use has lesser consequences on indicators of cognitive performance than expected

A study conducted by researchers at the University of Copenhagen found that facemask use does not affect indicators of cognitive performance when wearers are resting or performing moderate physical work in normal work-wear in hot environments. Wearing a facemask was shown to make it more difficult to breathe during physical work in a h...

When painting reveals increases in social trust

Facial displays of trustworthiness increased in European portraits between the fourteenth and twenty-first centuries, closely following rising living standards. The study used face-processing software on over 6,000 portraits to validate its findings.

SourceCNRS·JournalNature Communications·DateSep 22, 2020

Live imaging method brings structural information to mapping of brain function

Researchers have developed a new method that pairs functional mapping in live mice with distinguishing structural information, providing unprecedented insights into the coupling of visual areas in the mouse brain. This technique enables scientists to distinguish borders and contents of regions more precisely, shedding light on how stru...

SourcePicower Institute at MIT·JournalBiomedical Optics Express·DateSep 17, 2020

Why we distort probability

A team of researchers from New York University and Peking University found that human cognitive limitations lead to distorted probabilities and errors in decision-making. The model predicted human performance better than previous models, suggesting that people do as well as they can under their limitations.

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateAug 25, 2020

SNMMI Image of the Year: Super-agers show resistance to tau and amyloid accumulation

Research at SNMMI 2020 Annual Meeting found super-agers have lower tau and amyloid pathology associated with neurodegeneration. This enables them to maintain their cognitive skills even at advanced ages. The study suggests a potential pathway for successful aging and developing novel treatments to tackle age-related diseases.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateJul 15, 2020

More than one cognition: A call for change in the field of comparative psychology

A recent review in the Journal of Intelligence identifies two main problems hindering research in comparative psychology: anthropocentrism and a narrow view of cognition. The authors argue that studies should take a biocentric approach, considering each species in its own right, and focus on cognitive abilities unique to each species.

SourceMax Planck Institute of Geoanthropology·JournalJournal of Intelligence·DateJul 14, 2020

Rethinking visual awareness

Research on brain-damaged patients with distorted perception reveals neural processing can occur despite lack of awareness. The study's findings have significant implications for theories of human visual awareness and suggest a reevaluation of the relationship between complex cognitive processing and awareness.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateJun 22, 2020

Discovering how the brain works through computation

A team led by Christos Papadimitriou proposes a new computational system, the Assembly Calculus, that encompasses operations on assemblies of neurons involved in cognitive processes. The system is consistent with recent experimental results and has been demonstrated to be plausibly realizable at the level of neurons and synapses.

SourceColumbia University School of Engineering and Applied Science·JournalProceedings of the National Academy of Sciences·DateJun 11, 2020

The neurobiology of social distance

A new study by McGill University explores the wide-ranging, negative consequences of social isolation on human psychology and physical health. The research reveals that strong interpersonal relationships are critical for survival across the lifespan, while social isolation is a significant predictor of mortality and morbidity.

SourceMcGill University·JournalTrends in Cognitive Sciences·DateJun 9, 2020

Certain personality traits may affect risk of 'pre-dementia'

A study of 524 adults aged 65+ found that openness was linked to a 6% reduced risk of motoric cognitive risk (MCR), while neuroticism increased the risk of non-amnestic MCI. Personality traits played an independent role in pre-dementia syndromes, emphasizing their importance in dementia risk assessment.

SourceWiley·JournalJournal of the American Geriatrics Society·DateJun 3, 2020

Inappropriate diagnoses

A small but concerning number of former NFL players report receiving clinical diagnoses of CTE, raising concerns of inappropriate diagnosis and overlooking of treatable conditions. Players with sleep apnea, heart disease, and depression are more likely to receive a CTE diagnosis, which could downplay the effects of these conditions.

SourceHarvard Medical School·JournalAnnals of Neurology·DateApr 22, 2020