Another study metric, called Visual Attention Pattern, also found the iPhone and iPad drawing more attention than rival Android devices.

FORBES: Eye-Tracking Study Finds iPhone, iPad Draw More Attention Than Android Devices

Because they can spot the visual attention given to them, as well as the emotional state of the viewer, these ads could tailor their responses.

ECONOMIST: Facial monitoring

These subjects paid significantly more attention to individuals in the clips rated as more dominant or prestigious -- with the ability to command visual attention taken as an indication of influence.

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The electroencephalograph picks up cognitive functions in 12 different regions of the brain, showing memory recall and the level of attention paid to visual and aural stimuli.

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With a sharp eye for telling details, he avoids satire and bathos and creates characters of a rare complexity, which his incisive yet passionate visual style (with its rare attention to light and its absence) realizes empathetically.

NEWYORKER: Frownland

At Tesla, we provide many redundant visual and audible warnings if your battery ever needs attention.

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The system will send audible and visual alerts at first in an attempt to get your attention back, and can eventually "apply the brakes on its own" if the previous warnings prove futile.

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The Talladega murals, which initially attracted wide attention, may be Woodruff's most accomplished works, yet despite their visual strength and narrative power, they have been little known during the nearly seven decades since their installation in the lobby of the college library.

WSJ: Rising Up: Hale Woodruff's Murals From Talladega College | High Museum of Art | From Mutiny to Harmony | By Karen Wilkin