Biomedical technology

Video: The brain during a heart attack

State-of-the-art photoacoustic microscopy (imaging using the heat given off by lasers) shows the blood flow in a mouse brain before, during, and after cardiac arrest, showing the drastic change in the brain's blood flow when ...

Oncology & Cancer

Cancer cells mediate immune suppression in the brain

Scientists have long believed that the brain protects itself from an aggressive immune response to keep down inflammation. However, that evolutionary control may work against it when a cancer cell attempts to spread to the ...

Neuroscience

The choroid plexus: A conduit for prenatal inflammation?

Floating in fluid deep in the brain are small, little understood fronds of tissue. Two new studies reveal that these miniature organs are a hotbed of immune system activity. This activity may protect the developing brain ...

Psychology & Psychiatry

Researchers probe how aggression leads to more aggression

Like a champion fighter gaining confidence after each win, a male mouse that prevails in several successive aggressive encounters against other male mice will become even more aggressive in future encounters, attacking faster ...

Neuroscience

New neuron type discovered only in primate brains

Neuropsychiatric illnesses like schizophrenia and autism are a complex interplay of brain chemicals, environment, and genetics that requires careful study to understand the root causes. Scientists have traditionally relied ...

Psychology & Psychiatry

How fear persists in the mouse brain

Most people have experienced, at some point in their lives, a sudden unexpected fright. Even after a shadowy figure in a darkened room turns out to just be a chair, your heart rate is still high, your palms stay sweaty, and ...

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