行为学,条件作用,奖励
×

警告

JUser: :_load: 不能加载此会员;会员 ID : 124
Code: 47500

习得性无助系统

当啮齿类动物处于不可逃避且无可预计的压力状态下,比如强迫游泳、电击,它们常常发展为记忆、学习能力减退(例如,逃避);同时习得性无助实验也常用于止痛药的副作用(例如,应激性镇痛)等研究。

 

习得性无助系统由一个黑色的箱子和控制单位构成。箱子中配备电击功能的底板,系统中装有计时器,可设定时电击,随机电击;持续电击,间隔电击,也可以设计更复杂的电击方案,系统配有一个操作方便的报告软件,可以收集、输出数据。
大鼠小鼠都配有相应的动物笼。
本系统可根据情况扩展,最多可4只动物同时进行实验。

Learned Helplessness Learned Helplessness

附加信息

    特征
     
    优点
    随机电击模式 电击持续时间、间隔时间等随机
    通用性的触发电击 也可使用于 条件恐惧

     
    小鼠实验箱: 17 x17 x 20 (h) cm
    大鼠实验箱: 22 x 22 x 20 (h) cm
    电击电流; 0.1 -2.9 mA ,分辨率为0.1mA
    电击控制: 5V TTL signals
    定时器: 连接1-4个实验箱

    Learned helplessness is behavior typical of an organism (human or animal) that has endured repeated painful or otherwise aversive stimuli which it was unable to escape or avoid: American psychologist Martin Seligman initiated research on learned helplessness in 1967 at the University of Pennsylvania as an extension of his interest in depression.

    In animal studies, when rodents are exposed to inescapable and unpredictable stress, such as forced swim or inescapable footshock, they often develop deficits in memory and learning tasks (e.g. Active Avoidance), and they often show also analgesic reactions (S.I.A. Stress-Induced Analgesia).

    In addition, psychologists have looked at the correlation of depression and anxiety with learned helplessness over the years. It has been shown that the symptoms shown with learned helplessness have corresponding symptoms in depression. The symptoms most felt when depressed are the feelings of helplessness and uncontrollability that have been correlated with learned helplessness.

    Helplessness behavior is also studied in social settings: being repeatedly exposed to uncomfortable or painful situations, the person may believe that there is no use in trying to evade such situations. Another example of learned helplessness in social settings involves loneliness and shyness. Those who are extremely shy, passive, anxious and depressed may learn helplessness to offer stable explanations for unpleasant social experiences

    47500  大鼠习得性无助系统,包括:
    47502 大鼠笼
    47510计时器
    47554电击装置
    46003-330 连接线
    47510-302 说明书(CD)
    E-WP 008 电源线
    47550小鼠习得性无助系统,包括:
    47503小鼠笼
    其他配件与47500一致

    {module Bibliography on 47500}

    • W.H. Freeman: “Helplessness: On Depression, Development, and Death” ISBN 0-7167-0752-7. (Paperback reprint edition, W.H. Freeman, 1992, ISBN 0-7167-2328-X)
    • Grau et alia: “Long-term analgesia and activation of the opiate system” Science 213:1409-1411, 1981

  • Any-Maze 行为跟踪软件
    ANY-maze是当今最先进的视频跟踪系统、全世界数以千计的研究者相信,ANY-maze能将一种简单、熟悉的设计和无与伦比的深度特征结合起来,在几乎任何行为测试中都能提供自动化测试。
  • 高架O型迷宫
    高架O型迷宫有时比高架十字迷宫更好,因为它为动物提供了从封闭到开放臂的顺滑过度。
  • 旷场实验笼
    旷场是用来评估探索行为和验证焦虑相关行为测量的使用。Ugo Basile旷场笼有两种不同的尺寸和许多不同的版本从而满足不同试验的需求。旷场笼也能方便的用于(非)新对象识别实验。
  • 高架十字迷宫
    高架十字迷宫(EPM)被设计用测量实验动物的焦虑和作为神经生物学的焦虑研究的一般研究工具。该模型是基于实验动物对开放空间的厌恶。
  • Morris 水迷宫
    Ugo Basile水迷宫是专门为Morris水迷宫实验设计和制造的水池。
{module 711|category_id=43|style=mx_custom}