FLEXIBLE MEMORY PROCESSING BY RATS - USE OF PROSPECTIVE AND RETROSPECTIVE INFORMATION IN THE RADIAL MAZE
FLEXIBLE MEMORY PROCESSING BY RATS - USE OF PROSPECTIVE AND RETROSPECTIVE INFORMATION IN THE RADIAL MAZE
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DOI：
10.1037/0097-7403.11.3.453
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发表时间：
1985-01-01
期刊：
影响因子：
--
通讯作者：
RILEY, DA
中科院分区：
文献类型：
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作者：
COOK, RG;BROWN, MF;RILEY, DA
四项实验研究了大鼠在 12 臂径向迷宫中调节保留间隔时使用的记忆内容。延迟发生在第二、第四、第六、第八或第十个选择之后。当在选择序列中间插入 15 分钟的延迟时，其破坏性影响最大，而在较早或较晚发生时，影响较小。当自由选择或强制选择包括完成迷宫或 2 个替代强制选择测试时，就会获得这种结果模式。假设延迟的破坏性影响是记忆负荷的函数，这意味着老鼠在较早的插值延迟之后使用了有关先前访问过的手臂的信息（回顾性记忆），但在选择序列后期插值的延迟之后使用了有关预期选择的信息（前瞻性记忆）。似乎仅在早期和中期延迟条件下存在近因效应。这为双代码假设提供了一致的证据。延迟 60 分钟后没有获得前瞻性记忆的证据。
Four experiments investigated the content of the memory used by rats in mediating retention intervals interpolated during performance in a 12-arm radial maze. The delay occurred following either the 2nd, 4th, 6th, 8th or 10th choice. A 15-min delay had the greatest disruptive effect when interpolated in the middle of the choice sequence and less of an effect when it occurred either earlier or later. This pattern of results was obtained when either a free- or forced-choice consisted of completion of the maze or 2-alternative forced-choice tests. Assuming that the disruptive effect of a delay is a function of memory load, this implies that the rats used information about previously visited arms (retrospective memory) following an earlier interpolated delay but information about anticipated choices (prospective memory) following a delay interpolated late in the choice sequence. There appeared to be a recency effect only in the early and middle delay conditions. This provides converging evidence for the dual-code hypothesis. No evidence for prospective memory was obtained following a 60-min delay.