Department of Psychology, Keio University, Mita 2-15-45, Minato-Ku, Tokyo, Japan.
Behav Brain Res. 2022 Feb 10;418:113626. doi: 10.1016/j.bbr.2021.113626. Epub 2021 Oct 12.
This study aimed to use Japanese eels (Anguilla japonica) as subjects to examine the effects of telencephalic lesions on spatial learning. Ten Japanese eels were trained on a Morris-type spatial learning task. Four pipes were placed in a pool; however, the eels could hide in only one of these pipes. The learning task ensured that the eels learned about the position of the open pipe. Subsequently, their telencephalons were damaged. The lesioned eels could not maintain their learning and demonstrated deficits in re-learning as some of them were unable to relearn the task. An analysis of the lesion sizes revealed that while damage to the dorsolateral pallium correlates with maintenance of learning, damage to the dorsomedial pallium correlates with re-learning.
本研究旨在以日本鳗鲡（Anguilla japonica）为对象，探讨端脑损伤对空间学习的影响。十只日本鳗鲡接受了莫里斯型空间学习任务的训练。在一个水池中放置了四根管子，但是，鳗鱼只能躲在其中一根管子中。学习任务确保了鳗鱼了解了开放管的位置。随后，它们的端脑受到了损伤。损伤后的鳗鱼无法保持学习，并且在重新学习时表现出缺陷，因为它们中的一些无法重新学习任务。对损伤大小的分析表明，虽然背外侧脑叶的损伤与学习的维持有关，但背内侧脑叶的损伤与重新学习有关。
