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- W2090322040 abstract "Capacity of the working memory was tested in 12 rats highly overtrained in the 12- and 24-arm radial mazes. Asymptotic performance levels were characterized by 1.01 and 2.78 errors/trial in the 12- and 24-arm mazes, respectively. The incidence of errors increased from 31% on the last choice in the 12-arm maze to 51% on choices 23 and 24 in the 24-arm maze, but remained significantly below the expected error probability of about 85%. Linear extrapolation of the above trend to mazes with more arms suggests working memory capacity of 40 to 50 items. When two trials in a 12-arm maze were repeated in immediate succession, error incidence increased from 1.17 in the first trial to 2.13 in the second trial. The tendency to avoid choice repetition could be observed in any string of 12 continuous choices, but was weakest in segments divided by trial boundary (2.48 errors in choices 7 to 18). With a different trial separation (choices 1-6 and 19-24 in maze A, choices 7-18 in an adjacent maze B) errors dropped to 1.09 in B but increased to 2.30 in A. It is concluded that radial maze performance reflects avoidance of choice repetition which is improved by recognition of trial boundaries and is adversely influenced by forgetting and interference." @default.
- W2090322040 created "2016-06-24" @default.
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- W2090322040 title "Capacity of working memory in rats as determined by performance on a radial maze" @default.
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- W2090322040 doi "https://doi.org/10.1016/0376-6357(82)90053-5" @default.
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