Memory of auditory lists by rhesus monkeys (Macaca mulatta)

Author(s): Rivera, J. J.

Journal/Book: J Exp Psychol Anim Behav Proc. 1997; 23: 750 First St NE, Washington, DC 20002-4242. Amer Psychological Assoc. 441-449.

Abstract: 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.

Note: Article Rivera JJ, Univ Texas, Sch Med, Dept Neurobiol & Anat, POB 20708, Houston,TX 77225 USA

Keyword(s): SERIAL POSITION CURVES; FREE-RECALL; INTERSTIMULUS-INTERVAL; RECOGNITION MEMORY; PRIMACY; RECENCY; RATS; HUMANS; DISTINCTIVENESS; HIPPOCAMPUS

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