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相关概念视频

Instinctive Drift01:05

Instinctive Drift

177
Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
177

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Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
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风险偏好取决于执行补丁食任务的老鼠的环境丰富性.

Marissa Garcia1,2, Andrew M Wikenheiser1,2

  • 1Department of Psychology, University of California, Los Angeles.

bioRxiv : the preprint server for biology
|February 20, 2025
PubMed
概括

当旅行时间短时,老鼠更喜欢不那么危险的食物选择,但当旅行时间长时,老鼠没有表现出偏好. 过度收获的补丁增加了连续访问,独立于风险.

科学领域:

  • 行为神经科学 行为神经科学
  • 风险下进行决策
  • 采食理论是采食理论.

背景情况:

  • 风险显著影响决策,但确切的机制尚不清楚.
  • 了解环境因素如何调节风险敏感的食至关重要.

研究的目的:

  • 为了研究风险如何影响大鼠的食策略.
  • 确定旅行时间成本在调节冒险行为的作用.

主要方法:

  • 鼠在低变异和高变异的食物补丁之间选择,平均奖励相同.
  • 补丁之间的旅行时间被操纵 (短与长).
  • 记录了斑块居住时间和食选择.

主要成果:

  • 短的旅行时间导致老鼠偏好低方差选项.
  • 长的旅行时间消除了对低方差选项的偏好.
  • 老鼠始终过度收获地块,过度收获随着时间的推移而增加.

结论:

  • 旅行时间成本对食决策中的风险敏感性有很大影响.
  • 过度收获似乎是一种强有力的行为,不仅仅是由奖励不确定性驱动的.
关键词:
补丁食 补丁食决策是做出决策的过程.寻找信息 - 寻找信息过度采摘 过度采摘危险的风险 危险的风险

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