Intrahippocampal connections in the pigeon (Columba livia) as revealed by stimulation evoked field potentials
Intrahippocampal connections in the pigeon (Columba livia) as revealed by stimulation evoked field potentials
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通过刺激诱发场电位揭示鸽子（Columba livia）的海马内连接
DOI：
10.1002/cne.10409
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发表时间：
2002
影响因子：
2.5
通讯作者：
V. Bingman
中科院分区：
文献类型：
--
作者：
Gerald E. Hough;K. Pang;V. Bingman
哺乳动物和鸟类的海马结构（HF）对空间学习和记忆至关重要。然而，尽管哺乳动物HF的基本突触组织和连接性的特点，相对较少的是已知的鸟类HF。以400-600 μA刺激信鸽HF的局部区域，同时记录相对于刺激部位的邻近和更远HF区域的诱发场电位（EFP）。最短的可辨别EFP潜伏期为12.2毫秒。新兴的连通性概况（使用刺激后EFP振幅峰值的位置，不确定干预突触的数量）的特征在于从背外侧（DL）HF到背内侧（DM）HF的投射（15 msec潜伏期），在相同的前/后（A/P）节段，DM至腹外侧（VL）和腹内侧（VM; 15 msec）A/P水平上的HF，相同A/P水平上的VM至VL（12 msec）和对侧VM（15 msec），以及刺激部位后A/P水平上的VL至腹侧DL（DLv; 15 msec）。使用这些数据作为第一近似值，通过禽HF的连接似乎以可辨别的前馈网络为特征，该网络从DL到DM、DM到VL、VM和对侧VM、VM到VL和VL到后腹侧DLv的投影开始。虽然仍然是推测性的，结果表明，内部连接的鸟类HF是类似的哺乳动物HF，尽管两个类群之间的大的进化分歧。神经学比较杂志452：297-309，2002.© 2002 Wiley利斯公司
The hippocampal formation (HF) of mammals and birds is crucial for spatial learning and memory. However, although the underlying synaptic organization and connectivity of the mammalian HF are well characterized, comparatively little is known about the avian HF. Localized regions of the homing pigeon HF were stimulated at 400–600 μA while evoked field potentials (EFPs) were recorded from adjacent and more distant HF areas relative to the stimulation site. The shortest discernible EFP latency was 12.2 msec. The emerging connectivity profile (using the location of peak EFP amplitude after stimulation and making no determination of the number of intervening synapses) was characterized by projections from the dorsolateral (DL) HF to the dorsomedial (DM) HF (15‐msec latency) at the same anterior/posterior (A/P) level, DM to ventrolateral (VL) and ventromedial (VM; 15 msec) HF across A/P levels, VM to VL (12 msec) and contralateral VM (15 msec) at the same A/P level, and VL to ventral DL (DLv; 15 msec) across A/P levels posterior to the stimulation site. Using these data as a first approximation, connectivity through the avian HF appears to be characterized by a discernible feed‐forward network starting with a projection from DL to DM, DM to VL, VM, and contralateral VM, VM to VL, and VL to posterior ventral DLv. Although still speculative, the results suggest that the internal connectivity of the avian HF is similar to that of the mammalian HF, despite the large evolutionary divergence between the two taxa. J. Comp. Neurol. 452:297–309, 2002. © 2002 Wiley‐Liss, Inc.
灵长类齿状回的发射器系统。
DOI：
--
发表时间：
1986
期刊：
Human neurobiology
影响因子：
--
作者：
Amaral,DG;Campbell,MJ
通讯作者：
Campbell,MJ