Cell-phone conversations and other forms of multitasking may slow down the mental and visual processing required to gauge the distance and speed of oncoming cars, the study suggests.

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If a subject is presented with a sentence like, "When she came in from the cold her cheeks were like roses, " many sections of the brain become involved, including those responsible for visual processing.

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In that trial, about 2, 800 elderly participants showed improved memory, reasoning and visual processing speed after playing an earlier version of the Double Decision game, said Dr. Wolinsky, who also worked on that earlier research.

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Scientists are also unsure about the quality of vision that could be restored from stimulating nerve cells alone, as, in normal circumstances, there is a sigificant amount of visual processing that occurs between the photoreceptors and the nerve cells.

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Dolby already had some experience in visual signal processing, ironically through its audio work.

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Through this initiative, NHK is offering state-of-the-art digital visual and sound processing technologies to contribute to the documenting and safeguarding of tangible and intangible cultural heritage, and of national heritage.

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"The more content there is, the more visual interest there can be, the more processing horsepower people need, " says Huang, 44.

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With a beautifully simple brushed-aluminum design and optional backlit keyboard, the HP ENVY m4 PC features a 14-inch diagonal HD display and third-generation Intel Core processors that deliver a rich visual experience and a burst of speed for heavy processing tasks.

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Chips based on this architecture AMD calls Accelerated Processing Units or APUs from the old idea that graphics processors are hardware accelerators for rendering visual data.

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