Afferent and efferent connections of the dorsolateral corticoid area and a comparison with connections of the temporo-parieto-occipital area in the pigeon (Columba livia)
Afferent and efferent connections of the dorsolateral corticoid area and a comparison with connections of the temporo-parieto-occipital area in the pigeon (Columba livia)
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DOI：
10.1002/cne.20490
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发表时间：
2005-05-02
影响因子：
2.5
通讯作者：
Wild, JM
中科院分区：
文献类型：
--
作者：
Atoji, Y;Wild, JM
背外侧皮质激素区（CDL）在鸽端脑是一个薄的，表面的一部分，尾腭。毗邻位于中间的海马结构。为了确定CDL的连通性，并区分CDL从吻相邻的颞顶枕区（TPO），神经示踪剂注射到尾侧浅腭在不同的rostrocaudal水平。结果表明，注射A 6.75（Karten and霍多斯[1967]巴尔的摩：约翰霍普金斯大学出版社）的尾侧，引起了与海马结构、TPO、梨状皮质、后苍白杏仁核、尾腹侧巢皮质、软腭致密细胞部分、外侧软腭、额外侧巢皮质和外侧中间巢皮质的相互联系。其中，海马结构表现出非常强的连接与CDL，和从CDL的投射纤维清楚地分开的背内侧区的海马结构的外侧和内侧部分。CDL直接投射到嗅球，但不接受来自嗅球的投射。在间脑，CDL接受来自丘脑前背外侧核内侧部背侧区、圆下核和丘脑内侧旁正中核的传出神经。这些发现表明，CDL在鸽子属于边缘软腭，在某些方面，它可能是哺乳动物扣带皮层。相反，在A 7.00或A 6.50的头侧向套膜表面注射示踪剂，在顺行和逆行标记的模式上与尾侧注射的结果有显著差异，从而表明从CDL到TPO的过渡水平。(c)2005 Wiley-Liss，Inc.
The dorsolateral corticoid area (CDL) in the pigeon telencephalon is a thin, superficial part of the caudal pallium. adjoining the medially situated hippocampal formation. To determine the connectivity of CDL, and to distinguish CDL from the rostrally adjacent temporo-parieto-occipital area (TPO), injections of neural tracers were made into the caudal superficial pallium at various rostrocaudal levels. The results showed that injections caudal to A 6.75 (Karten and Hodos [1967] Baltimore: Johns Hopkins University Press) gave rise to reciprocal connections with subdivisions of the hippocampal formation, TPO, piriform cortex, posterior pallial arnygdala, caudoventral nidopallium, densocellular part of the hyperpallium, lateral hyperpallium, frontolateral nidopallium, and lateral intermediate nidopallium. Of these, the hippocampal formation showed very strong connectivity with CDL, and projection fibers from CDL clearly separated the dorsomedial region of the hippocampal formation into lateral and medial portions. CDL projected directly to the olfactory bulb, but did not receive projections from it. In the diencephalon, CDL received efferents from a dorsal region of the medial part of the anterior dorsolateral nucleus of the thalamus, subrotundal nucleus, and internal paramedian nucleus of the thalamus. These findings suggest that CDL in the pigeon belongs to the limbic pallium and that in some respects it may be comparable to the mammalian cingulate cortex. In contrast, injections of tracers into the pallial surface at or rostral to A 7.00 showed marked differences in the pattern of both anterograde and retrograde labeling from that resulting from injections caudal to A 6.50, thereby indicating the approximate level of transition from CDL to TPO. (c) 2005 Wiley-Liss, Inc.