A new anatomical landmark for reliable identification of human area V5/MT: a quantitative analysis of sulcal patterning
A new anatomical landmark for reliable identification of human area V5/MT: a quantitative analysis of sulcal patterning
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DOI：
10.1093/cercor/10.5.454
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发表时间：
2000-05-01
期刊：
影响因子：
3.7
通讯作者：
Evans, AC
中科院分区：
文献类型：
--
作者：
Dumoulin, SO;Bittar, RG;Evans, AC
人体V5区（MT）的位置与颞下沟（ALITS）上升肢与枕外侧沟（LO）的交点有关。本研究试图利用功能性磁共振成像复制和量化这些观察结果。V5在19个脑半球被显著激活，呈交替、低对比度、随机棋盘图案。我们确认了V5的立体定位，并能够描述一个相当一致的沟模式在顶叶-颞-枕皮质。V5通常（95%）埋在沟内，最常见的是颞下沟（ITS）（11%）、颞下沟上升肢（ALITS）（53%）和颞下沟后延线（26%）。经鉴定的两个V5解剖标志，即LO和ALITS的连接处，以及ITS和ALITS的平均距离均为1 cm。然而，LO-ALITS结通常必须通过内插来确定（47%），并且即使有内插也不总是存在（21%）。相比之下，ITS-ALITS连接点总是存在，V5通常（90%）位于与该连接点相交的沟中，这使得它在单个皮质表面的大体形态学特征方面成为定位V5的更可靠的标志。
The location of human area V5 (or MT) has been correlated with the intersection of the ascending limb of the inferior temporal sulcus (ALITS) and the lateral occipital sulcus (LO). This study was undertaken to attempt a replication and quantification of these observations using functional magnetic resonance imaging. V5 was significantly activated in 19 hemispheres with alternating, low contrast, random checkerboard patterns. We confirmed the stereotaxic location of V5 and were able to describe a fairly consistent sulcal pattern in the parieto-temporo-occipital cortex. V5 was usually (95%) buried within a sulcus, most commonly within the inferior temporal sulcus (ITS) (11%), the ascending limb of the ITS (ALITS) (53%) and the posterior continuation of the ITS (26%). The average distance from V5 of two identified anatomical landmarks of V5, the junctions of the LO and the ALITS, and the ITS and ALITS, were both similar to 1 cm. However, the LO-ALITS junction often had to be determined by interpolation (47%), and was not always present even with interpolation (21%). In contrast, the ITS-ALITS junction was always present and V5 was usually (90%) located in a sulcus intersecting with this junction, making it a more reliable landmark for localizing V5 with respect to gross morphological features on individual cortical surfaces.