Word: visual
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...building?an unadorned box, made of glass and concrete or steel, typically perched upon an empty plaza?was springing up in every part of the developed world. It was a style that could produce individual works of great beauty, but in the aggregate could transform whole city centers into visual and spiritual dead zones...
...technique—called two-photon calcium imaging in vivo—was applied to the part of the brain where neural input from the eye is translated into images we see. When the animals, cats, and rats were subjected to visual stimuli of moving black and white stripes, the technique recorded images of hundreds of nerve cells firing simultaneously...
...order to capture cells responses to the visual stimuli, the researchers injected clusters of cells with a substance that glows when calcium levels rise, a sign of firing neurons. Then, using a sophisticated microscope, the researchers produced time-lapse images, or successive photographs, which showed alternating groups of cells glowing: multiple clusters of firing neurons...
...technique, which generates high resolution pictures, has also revealed surprising precision of brain cell organization in the visual cortex of cats...
...method is a combination of several previously discovered techniques, including work done by Hubel and Torsten Wiesel, who won a Nobel prize for their work. Their experiments revealed that different neurons in the visual cortex respond to different stimuli...