Study pinpoints Alzheimer's plaque emergence early and deep in the brain

By scanning whole brains of Alzheimer's model mice from an early age, researchers were able to precisely trace the terrible march of amyloid plaques from deep brain structures outward along specific circuits. They also showed that plaque density in a key region in humans scales with disease stage.

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Manipulating specific brain waves in sleep shifts balance between learning or forgetting a new skill

Distinct patterns of electrical activity in the sleeping brain may influence whether we remember or forget what we learned the previous day, according to a new study. The scientists were able to influence how well rats learned a new skill by tweaking these brainwaves while animals slept, suggesting potential future applications in boosting human memory or forgetting traumatic experiences, the researchers say.

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Sex-based differences in the development of brain hubs involved in memory and emotion

Researchers have uncovered sex-based differences in the development of the hippocampus and amygdala. These brain areas have been implicated in the biology of several mental disorders that impact males and females differently. The findings may help researchers better understand sex-based differences in the emergence of mental disorders during adolescence and early adulthood.

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Epilepsy: Function of 'brake cells' disrupted

In some forms of epilepsy, the function of certain ''brake cells'' in the brain is presumed to be disrupted. This may be one of the reasons why the electrical malfunction is able to spread from the point of origin across large parts of the brain. A current study points in this direction.

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A new mechanism has been revealed which could lead to premature aging in mother cells

A new mechanism makes it possible to understand premature ageing in cells with asymmetrical cell division, as is the case with mother cells. Understanding this mechanism is useful for studying and, in the future, anticipating the development of ageing-related diseases, such as cancer and neurodegenerative processes.

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