Researchers will be able to track signals that a brain cell receives from another brain cell, whether they trigger the receiving neuron to fire or not so-called sub-threshold inputs can excite or inhibit a neuron, and taken together, may or may not stimulate a neuron to fire to another neuron. Scientists can now study normal electrical signals as they move through the brain, and gain insight into what goes wrong with these impulses in disease. The imaging technique has brought laser-scanning together with two-photon fluorescence microscopy to capture the cells of a two-dimensional slice of mouse neocortex in action. ![]() "This is really exciting because we are now able to do something that people really weren't able to do before," said lead researcher Na Ji, a University of California, Berkeley associate professor of physics and of molecular and cell biology. ![]() The findings have been reported in Nature Methods, and a neuron can be seen firing in the following video. Now scientists have created a camera that is fast enough to capture images of these electrical signals the camera can snap up to 3,000 images of a mouse brain every second, and for the first time, has recorded electrical impulses as they pass through neurons. Neurons send rapid electrical signals through the brain and limbs constantly, enabling us to think, move, and live.
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