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首页> 外文期刊>Neuron >Backward shift of head direction tuning curves of the anterior thalamus: comparison with CA1 place fields.
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Backward shift of head direction tuning curves of the anterior thalamus: comparison with CA1 place fields.

机译：前丘脑的头部方向调整曲线向后移动：与CA1放置区域的比较。

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摘要

The head direction cell system is composed of multiple regions associated with the hippocampal formation. The dynamics of head direction tuning curves (HDTCs) were compared with those of hippocampal place fields. In both familiar and cue-altered environments, as a rat ran an increasing number of laps on a track, the center of mass (COM) of the HDTC tended to shift backward, similar to shifting observed in place cells. However, important differences existed between these cells in terms of the shift patterns relative to the cue-altered conditions, the proportion of backward versus forward shifts, and the time course of shift resetting. The demonstration of backward COM shifts in head direction cells and place cells suggests that similar plasticity mechanisms (such as temporally asymmetric LTP induction or spike timing-dependent plasticity) may be at work in both brain systems, and these processes may reflect a general mechanism for storing learned sequences of neural activity patterns.
机译：头部方向细胞系统由与海马结构相关的多个区域组成。将头部方向调整曲线（HDTC）的动力学与海马位场的动力学进行了比较。在熟悉和提示改变的环境中，随着老鼠在赛道上跑的圈数越来越多，HDTC的质心（COM）倾向于向后移动，类似于在原位细胞中观察到的移动。但是，在这些单元之间，在相对于提示更改的条件的移位模式，后退与前进移位的比例以及移位重置的时间过程方面存在重要差异。头部方向细胞和位置细胞向后COM移位的演示表明，两个大脑系统都可能在起作用类似的可塑性机制（例如时间不对称的LTP诱导或峰值时间依赖的可塑性），这些过程可能反映了存储学习到的神经活动模式序列。

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