Psychology & Psychiatry

Bullied teens' brains show chemical change associated with psychosis

Researchers have found that adolescents being bullied by their peers are at greater risk of the early stages of psychotic episodes and in turn experience lower levels of a key neurotransmitter in a part of the brain involved ...

Biomedical technology

Bidirectional control of prosthetic hands using ultrasonic sensors

For anyone who has lost a hand, a functional prosthetic hand is of enormous benefit when it comes to everyday activities. So researchers at Fraunhofer are working as part of an EU research project to improve control of prosthetic ...

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Action potential

An action potential (or nerve impulse) is a transient alteration of the transmembrane voltage (or membrane potential) across an excitable membrane generated by the activity of voltage-gated ion channels embedded in the membrane. Action potentials play multiple roles in several types of excitable cells such as neurons, myocytes, and electrocytes. The best known action potentials are pulse-like waves of voltage that travel along axons of neurons.

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