Yes, it saves scientists time and money to have volunteer eyes and data-gathering in out-of-the-way places.
Sports count in a different way from the ultimate sacrifice paid by Dr. Thomas Emmett Little, who was honored posthumously, after being murdered while volunteering eye care to the people of Afghanistan in 2010.
Twenty healthy subjects served as volunteers: eye movements were captured by means of four electrodes and a two-channel amplifier.
The follow-up eye-tracking experiment suggested that volunteers' eye movements tended to follow the direction of head turns, thus presenting a potential confound to the interpretation of our results.
Sheila Jamison, one of the volunteers, eyed him sideways.
"I have a math test tomorrow," the teenager volunteered, eyes glued to the ceiling.
"We saw many more areas of the brain than normal were contributing to visual processing under LSD, even though volunteers' eyes were closed," he said.
This means they are probably paying more attention than they would if the advertisements were playing normally.The researchers set up a series of experiments in which volunteers' eye-movements were tracked while they watched a nature documentary.
After a slight pause, he volunteered, eyes flashing, "As is the forty-per-cent decrease in crime during my time — as is the eighty-per-cent decrease in the last twenty years".
Our work helps break down older people's fears about young people and opens our volunteers' eyes to the lives of older people with very different experiences from their own".
