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Prospective representations in rat orbitofrontal ensembles.
Behavioral Neuroscience ( IF 1.6 ) Pub Date : 2021-06-24 , DOI: 10.1037/bne0000451
Jingfeng Zhou 1 , Wenhui Zong 1 , Chunying Jia 2 , Matthew P H Gardner 1 , Geoffrey Schoenbaum 1
Affiliation  

The orbitofrontal cortex (OFC) has been proposed to encode expected outcomes, which is thought to be important for outcome-directed behavior. However, such neural encoding can also often be explained by the recall of information about the recent past. To dissociate the retrospective and prospective aspects of encoding in the OFC, we designed a nonspatial, continuous, alternating odor-sequence task that mimicked a continuous T-maze. The task consisted of two alternating sequences of four odor-guided trials (2 sequences × 4 positions). In each trial, rats were asked to make a "go" or "no-go" action based on a fixed odor-reward contingency. Odors at both the first and last positions were distinct across the two sequences, such that they resembled unique paths in the past and future, respectively; odors at positions in between were the same and thus resembled a common path. We trained classifiers using neural activity to distinguish between either sequences or positions and asked whether the neural activity patterns in the common path were more like the ones in the past or the future. We found a proximal prospective code for sequence information as well as a distal perspective code for positional information, the latter of which was closely associated with rats' ability to predict future outcomes. This study demonstrates a behaviorally relevant predictive code in rat OFC. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

中文翻译:

大鼠眶额合奏的前瞻性表现。

已经提出眶额皮质 (OFC) 来编码预期结果,这被认为对结果导向的行为很重要。然而,这种神经编码通常也可以通过回忆有关最近过去的信息来解释。为了分离 OFC 中编码的回顾性和前瞻性方面,我们设计了一个模拟连续 T 迷宫的非空间、连续、交替气味序列任务。该任务包括四个气味引导试验的两个交替序列(2 个序列 × 4 个位置)。在每次试验中,都要求大鼠根据固定的气味奖励意外事件做出“走”或“不走”的动作。两个序列的第一个和最后一个位置的气味都不同,因此它们分别类似于过去和未来的独特路径;两者之间的气味是相同的,因此类似于一条共同的路径。我们使用神经活动训练分类器以区分序列或位置,并询问共同路径中的神经活动模式是否更像过去或未来的神经活动模式。我们发现了序列信息的近端前瞻性代码以及位置信息的远端透视代码,后者与大鼠预测未来结果的能力密切相关。这项研究证明了大鼠 OFC 中的行为相关预测代码。(PsycInfo 数据库记录 (c) 2021 APA,保留所有权利)。我们使用神经活动训练分类器以区分序列或位置,并询问共同路径中的神经活动模式是否更像过去或未来的神经活动模式。我们发现了序列信息的近端前瞻性代码以及位置信息的远端透视代码,后者与大鼠预测未来结果的能力密切相关。这项研究证明了大鼠 OFC 中的行为相关预测代码。(PsycInfo 数据库记录 (c) 2021 APA,保留所有权利)。我们使用神经活动训练分类器以区分序列或位置,并询问共同路径中的神经活动模式是否更像过去或未来的神经活动模式。我们发现了序列信息的近端前瞻性代码以及位置信息的远端透视代码,后者与大鼠预测未来结果的能力密切相关。这项研究证明了大鼠 OFC 中的行为相关预测代码。(PsycInfo 数据库记录 (c) 2021 APA,保留所有权利)。这项研究证明了大鼠 OFC 中的行为相关预测代码。(PsycInfo 数据库记录 (c) 2021 APA,保留所有权利)。这项研究证明了大鼠 OFC 中的行为相关预测代码。(PsycInfo 数据库记录 (c) 2021 APA,保留所有权利)。
更新日期:2021-06-26
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