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Biomedical subjects

G Sperling

Publications and source records attributed to G Sperling.

61 records · Page 4Linked to original sources

The attention operating characteristic: examples from visual search.

Even in the absence of eye movements, we show that subjects are able, upon instruction, to selectively attend to certain kinds of targets and parts of visual arrays. The major mechanism of altering attention is the switching of attention from trial to trial, although intermediate states of shared attention do occur. Attention operating characteristics are shown to be a useful way of describing such data and of assessing the compatibility of tasks to be performed simultaneously.

Attention↗

Extremely rapid visual search: the maximum rate of scanning letters for the presence of a numeral.

Subjects searched a rapid sequence of computer-produced letter arrays for the presence of a numeral in one of the arrays. The subjects' scanning rates were computed from their precentage of correct detections of the location of the numeral. Scanning rates were very high and approximately the same for a wide variety of conditions; the highest scanning rates (125 and 75 letters per second for two subjects) occurred when there were 9 or 16 letters in each of the arrays and when new arrays were presented every 40 to 50 milliseconds. Giving the subject advance knowledge of the numeral to be presented made little difference in the scores.

Computers↗

What you should know about patient billing.

Arming yourself with some knowledge of the billing process will help you understand what can be done to assist with self-pay and insurance claims. It will also provide you with some insight into how you can be part of the solution to this seemingly endless dilemma.

Abstracting and Indexing↗