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大鼠 Morris 水迷宫空间定位与再学习测定

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A rat water-maze procedure using an automated Atlantis platform and distal cues, with a new platform location each day. Preserve the separate platform-found and platform-not-found paths, and record escape latency and swim trajectories across the successive trials.

Scope and method

Sample:活体大鼠;原方案在 Wistar 大鼠中实施。

学习与记忆评估

Reagents and materials

Procedure

  1. 检查摄像机设置

    检查摄像机设置。

  2. 将 Atlantis 自动升降平台置于水池,确认升降运动正常,避免平台上下移动时产生水波

    将 Atlantis 自动升降平台置于水池,确认升降运动正常,避免平台上下移动时产生水波。

  3. 将平台放置在与前一天不同的位置

    将平台放置在与前一天不同的位置。

  4. 实验第一天不执行与前一天位置比较的要求

    实验第一天不执行与前一天位置比较的要求。

  5. 启动 Bonsai 工作流,确认以 30 fps 记录视频

    启动 Bonsai 工作流,确认以 30 fps 记录视频。

  6. 降下平台,使动物暂时无法使用平台

    降下平台,使动物暂时无法使用平台。

  7. 将动物放在所选起点,面向水池中心

    将动物放在所选起点,面向水池中心。

  8. 轻放动物入水,避免抛掷和溅水

    轻放动物入水,避免抛掷和溅水。

  9. 释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序

    释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序。

  10. 经过 1 分钟 后,按下按钮升起平台

    经过 1 分钟 后,按下按钮升起平台。

  11. 动物到达并接触平台时停止计时;本次试验时限为 2 分钟

    Choose the matching condition: Platform — Rats will find the platform. They will do this in two minutes or less; Not platform — If the rat does not find the platform within 2 minutes. 动物到达并接触平台时停止计时;本次试验时限为 2 分钟。

  12. 返回取出动物,放入笼内擦干

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 返回取出动物,放入笼内擦干。

  13. 间隔 30 分钟 后开始第 2 次试验

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 间隔 30 分钟 后开始第 2 次试验。

  14. 升起平台,使动物能够登台,但平台仍不可直接看见

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 升起平台,使动物能够登台,但平台仍不可直接看见。

  15. 将动物放在所选起点,面向水池中心;每次试验随机选择不同的起点

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 将动物放在所选起点,面向水池中心;每次试验随机选择不同的起点。

  16. 轻放动物入水,避免抛掷和溅水

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 轻放动物入水,避免抛掷和溅水。

  17. 释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less 释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序。

  18. 动物到达并接触平台,或经过 1 分钟 时停止计时

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Choose the matching condition: Platform — Rats will find the platform. They will do this in 1 minute or less; Not platform — If the rat does not find the platform within 1 minute 动物到达并接触平台,或经过 1 分钟 时停止计时。

  19. 返回取出动物,放入笼内擦干

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Platform — Rats will find the platform. They will do this in 1 minute or less 返回取出动物,放入笼内擦干。

  20. 间隔 5 分钟 后进行下一次试验

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Platform — Rats will find the platform. They will do this in 1 minute or less 间隔 5 分钟 后进行下一次试验。

  21. 将大鼠放在平台上

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Not platform — If the rat does not find the platform within 1 minute 将大鼠放在平台上。

  22. 离开实验区域

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Not platform — If the rat does not find the platform within 1 minute 离开实验区域。

  23. 等待 10 秒

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Not platform — If the rat does not find the platform within 1 minute 等待 10 秒。

  24. 返回取出动物,放入笼内擦干并等待

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Not platform — If the rat does not find the platform within 1 minute 返回取出动物,放入笼内擦干并等待。

  25. 间隔 5 分钟 后进行下一次试验

    Condition: Platform — Rats will find the platform. They will do this in two minutes or less Condition: Not platform — If the rat does not find the platform within 1 minute 间隔 5 分钟 后进行下一次试验。

  26. 将大鼠放在平台上

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 将大鼠放在平台上。

  27. 离开实验区域

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 离开实验区域。

  28. 等待 10 秒

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 等待 10 秒。

  29. 返回取出动物,放入笼内擦干并等待

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 返回取出动物,放入笼内擦干并等待。

  30. 间隔 30 分钟 后开始第 2 次试验

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 间隔 30 分钟 后开始第 2 次试验。

  31. 升起平台,使动物能够登台,但平台仍不可直接看见

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 升起平台,使动物能够登台,但平台仍不可直接看见。

  32. 将动物放在所选起点,面向水池中心;每次试验使用不同的起点

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 将动物放在所选起点,面向水池中心;每次试验使用不同的起点。

  33. 轻放动物入水,避免抛掷和溅水

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 轻放动物入水,避免抛掷和溅水。

  34. 释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 释放动物且操作者离开实验区域时,启动计时器或计算机跟踪程序。

  35. 动物到达并接触平台时停止计时;本次试验时限为 1 分钟

    Condition: Not platform — If the rat does not find the platform within 2 minutes. 动物到达并接触平台时停止计时;本次试验时限为 1 分钟。

Quality control and readouts

开始前布置远端视觉线索,确认摄像机焦点和光照。水池直径 180 cm、深 60 cm,水面距池沿 10 cm;平台位于水面下 1.5 cm。准备时将池水加热至 22°C,实验过程中保持 19–22°C,加入无毒着色剂使水体变暗。保温箱配备毛巾和加热灯,加热灯不覆盖整个箱体,使动物可以离开暖区。保持各次试验的等待时间和操作时间一致,减少水面反光。

记录每次定位试验的到台潜伏期和游泳轨迹,比较相继试验中的空间定位表现。到达平台与达到时限未到台的情况按对应条件路径分别处理。

References

  1. Maroto AS, Ugarte Perez E, Cerdán Cerdá A, De Santis S. Morris Water Maze. protocols.io, published 2026-03-26, v1. DOI:10.17504/protocols.io.e6nvwn832vmk/v1.
  2. Early Neuroprotective Effects of Erucic Acid and Gentisic Acid on Hippocampal Glutamate Concentrations and Alzheimer-like Molecular Alterations in an Intracerebroventricular Streptozotocin Rat Model. PMID:42797438; DOI:10.3390/ph19091392. Model/assay applicability; not exact replication of the separate protocols.io procedure.
  3. Multimodal Imaging in Rat Model Recapitulates Alzheimer's Disease Biomarkers Abnormalities. PMID:29097597; DOI:10.1523/JNEUROSCI.1346-17.2017. Model/assay applicability; not exact replication of the separate protocols.io procedure.
  4. Anxiety-like behavior as an early endophenotype in the TgF344-AD rat model of Alzheimer’s disease.. PMID:29107184; DOI:10.1016/j.neurobiolaging.2017.09.024. Model/assay applicability; not exact replication of the separate protocols.io procedure.
  5. Schisandrin ameliorates cognitive deficits, endoplasmic reticulum stress and neuroinflammation in streptozotocin (STZ)-induced Alzheimer’s disease rats. PMID:32336744; DOI:10.1538/expanim.19-0146. Model/assay applicability; not exact replication of the separate protocols.io procedure.

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