Mounting brain organoid research reignites ethical debate

As research involving the transplantation of human 'mini-brains' — known as brain organoids — into animals to study disease continues to expand, so do the ethical debates around the practice. A new article seeks to clarify the abilities of brain organoids and suggests an ethical framework that better defines and contextualizes these organoids and establishes thresholds for their use.

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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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Exploring the brain in a new way: Researcher records neurons to understand cognition

Whether we're searching for Waldo or our keys in a room of clutter, we tap into a part of the frontal region of the brain when performing visual, goal-related tasks. Some of us do it well, whereas for others it's a bit challenging. One researcher set out to investigate why, and what specifically this part of the brain, called the pre-supplementary motor area, does during searching.

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No evidence that power posing works

Striking a power pose before an important meeting or interview is not going to boost your confidence or make you feel more powerful, says a researcher. A psychology professor reviewed nearly 40 studies on the topic and found not a single one supports the claims that power posing works.

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Neuroimaging reveals hidden communication between brain layers during reading

Language involves many different regions of the brain. Researchers have discovered previously hidden connections between brain layers during reading, in a neuroimaging study. The team used laminar Functional Magnetic Resonance Imaging (lfMRI) to investigate what happens when people read Dutch words like ''zalm'' (salmon) compared to pseudowords (''rorf''), revealing top-down influences on deep brain layers for the first time.

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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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