|This task assesses the ability to maintain an alert state, while presenting
a rather low information processing load. It is sensitive to the effects
of a number of CNS depressant drugs, though it is not in general as sensitive
as more heavily-loaded tasks such as Rapid Visual information Processing.
Nonetheless it is of value to include this test as a representative of
many real-world activities which are under-loaded, most obviously driving.
This task has been used in many studies to assess effects of drugs. The test can be run on a
tablet or on a Java-enabled mobile phone.