A rudimentary form of time-dependent awareness in mice.

IF 3.2 3区 心理学 Q1 PSYCHOLOGY, EXPERIMENTAL
Alexa Minary, Ezgi Gür, Fuat Balcı
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Abstract

Keeping track of event times and the uncertainty in the resultant representation time intervals is pivotal for adaptive decision-making and action planning. To this end, earlier experiments showed that humans and rodents can generate adaptive biases in decision-making considering their representational timing uncertainty. More recent studies showed that humans and rats can also track whether and how much one has underestimated or overestimated the duration of an event (resulting from timing uncertainty). These studies overlooked a more rudimentary form of time-dependent awareness-that is, knowing whether or not a response is emitted under temporal control. This type of dual-system control is a common feature of responses in tasks requiring animals to wait. We tested this hypothesis in C57BL/6 male mice (N = 16) that were trained to depress a lever for a minimum target duration to receive a reward. No reward was given when mice under-produced the minimum required target interval. During test trials, the rate of nose-pokes into the food hopper during a variable response window following time production was recorded. Mice nose-poked more vigorously (reflecting higher reward expectancy) following temporal productions around the target duration compared with when they underproduced the minimum target interval. This result suggests that mice can monitor whether their responses resulted from temporal control versus its failure. Our findings point to a rudimentary form of time-dependent awareness in mice.

老鼠的时间依赖意识的基本形式。
跟踪事件时间和结果表示时间间隔中的不确定性对于自适应决策和行动计划至关重要。为此,早期的实验表明,考虑到表征时间的不确定性,人类和啮齿动物可以在决策中产生适应性偏见。最近的研究表明,人类和老鼠也可以追踪自己是否低估或高估了事件的持续时间,以及高估了多少(由于时间的不确定性)。这些研究忽略了一种更基本的依赖时间的意识形式,即知道一个反应是否在时间控制下发出。这种类型的双系统控制是动物在需要等待的任务中反应的常见特征。我们在C57BL/6雄性小鼠(N = 16)中测试了这一假设,这些小鼠被训练在最短的目标持续时间内按压杠杆以获得奖励。当小鼠产生的最小目标时间间隔不足时,不给予奖励。在试验过程中,在时间生产后的可变响应窗口期间,记录了鼻子插入食物漏斗的速率。在目标时间前后产生的时间比在最短目标时间内产生的时间少时,老鼠的鼻子戳得更猛(反映出更高的奖励预期)。这一结果表明,小鼠可以监测它们的反应是由时间控制引起的还是由时间控制失败引起的。我们的发现指向了小鼠中一种基本形式的时间依赖意识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.70
自引率
2.90%
发文量
165
期刊介绍: The journal provides coverage spanning a broad spectrum of topics in all areas of experimental psychology. The journal is primarily dedicated to the publication of theory and review articles and brief reports of outstanding experimental work. Areas of coverage include cognitive psychology broadly construed, including but not limited to action, perception, & attention, language, learning & memory, reasoning & decision making, and social cognition. We welcome submissions that approach these issues from a variety of perspectives such as behavioral measurements, comparative psychology, development, evolutionary psychology, genetics, neuroscience, and quantitative/computational modeling. We particularly encourage integrative research that crosses traditional content and methodological boundaries.
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