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首页> 外文期刊>The European Journal of Neuroscience >Telencephalon and geometric space in goldfish.
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Telencephalon and geometric space in goldfish.

机译：端脑和金鱼的几何空间。

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Neuroanatomical evidence indicates that the lateral pallium (LP) of ray-finned fishes could be homologous to the hippocampus of mammals and birds. Recent studies have found that hippocampus of mammals and birds is critical for learning geometric properties of space. In this work, we studied the effects of lesions to the lateral pallium of goldfish on the encoding of geometric spatial information. Goldfish with telencephalic lesions were trained to search for a goal in a rectangular-shaped arena containing one different wall that served as the only distinctive environmental feature. Although fish with lateral pallium lesions learned the task even faster than sham and medial pallium (MP)-lesioned animals, subsequent probe trials showed that they were insensitive to geometric information. Sham and medial pallium-lesioned animals could use both geometric and feature information to locate the goal. By contrast, fish with lateral palium lesions relied exclusively on the feature information provided by the wall of a different colour. These results indicate that lesions to the lateral pallium of goldfish, like hippocampal lesions in mammals and birds, selectively impair the encoding of geometric spatial information of environmental space. Thus, the forebrain structures of teleost fish that are neuroanatomically equivalent to the mammalian and avian hippocampus also share a central role in supporting spatial cognition. Present results suggest that the presence of a hippocampal-dependent memory system implicated in the processing of geometric spatial information is an ancient feature of the vertebrate forebrain that has been conserved during the divergent evolution of different vertebrate groups.
机译：神经解剖学证据表明，鳍鳍鱼的侧脑皮（LP）可能与哺乳动物和鸟类的海马体同源。最近的研究发现，哺乳动物和鸟类的海马体对于学习空间的几何特性至关重要。在这项工作中，我们研究了病变对金鱼侧脑膜的几何空间信息编码的影响。训练有脑末梢病变的金鱼在矩形竞技场中寻找目标，该竞技场包含一个不同的壁，该壁是唯一独特的环境特征。尽管具有外侧大脑皮损的鱼类比受假手术和内侧钯（MP）损害的动物更快地学会了这项任务，但随后的探查试验表明，它们对几何信息不敏感。假手术和内部病变动物可以使用几何和特征信息来定位目标。相比之下，具有侧pa骨病变的鱼仅依赖于不同颜色的壁所提供的特征信息。这些结果表明，对金鱼的侧脑膜的损害，如哺乳动物和鸟类的海马区损害，有选择地损害了环境空间的几何空间信息的编码。因此，硬骨鱼类的前脑结构在神经解剖学上等同于哺乳动物和禽类海马，在支持空间认知方面也起着核心作用。目前的结果表明，涉及几何空间信息处理的海马依赖性记忆系统的存在是脊椎动物前脑的古老特征，在不同脊椎动物群体的不同进化过程中一直被保护。

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