Memory of auditory lists by rhesus monkeys (Macaca mulatta).
Monkey auditory memory was tested with increasing list lengths of 4, 6, 8, and 10 sounds. Five-hundred and twenty environmental sounds of 3-s duration were used. In Experiment 1, the monkeys initiated each list by touching the center speaker. They touched 1 of 2 side speakers to indicate whether a single test sound (presented from both side speakers simultaneously) was or was not in the list. The serial-position functions showed prominent primacy effects (good first-item memory) and recency effects (good last-item memory). Experiment 2 repeated the procedure without the list-initiation response and with a variable intertrial interval. The results of both experiments were similar and are discussed in relation to theories and hypotheses of serial-position effects.
Wright
A A
AA
Department of Neurobiology and Anatomy, University of Texas Medical School at Houston 77225, USA. aawright@nba19.med.uth.tmc.edu
Rivera
J J
JJ
D000818:Animals; D001288:Attention; D001307:Auditory Perception; D008253:Macaca mulatta / Q000523:psychology*; D008297:Male; D011939:Mental Recall; D012153:Retention, Psychology; D012691:Serial Learning; D013017:Sound Localization