Fig 10.

Three tests of four-item auditory list memory with 2 rhesus monkeys BW and FD. Upper panels show their first test results. Middle panels show their second test results with the interstimulus interval changed from 1 s to 0.5 s. Lower panels show their third test results with the interstimulus interval changed back to 1 s. Open symbols (diff) show performance on different trials where the test item did not match any list item. Delay is the retention interval between the last list item (position 4) and the test.