Visual motion responses in the posterior cingulate sulcus: a comparison to V5/MT and MST.
Visual motion responses in the posterior cingulate sulcus: a comparison to V5/MT and MST.
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DOI：
10.1093/cercor/bhr154
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发表时间：
2012-04
期刊：
影响因子：
--
通讯作者：
Bartels A
中科院分区：
文献类型：
--
作者：
Fischer E;Bülthoff HH;Logothetis NK;Bartels A
除了V5+/MT+之外的运动处理区域仍然相对知之甚少。在这里，我们使用功能磁共振成像进行详细的功能分析最近描述的扣带回沟视觉区（CSV）的背后扣带回皮质。我们使用不同类型的视觉运动刺激比较CSv与V5/MT和MST，包括视觉追踪范式。V5/MT和MST都更喜欢3D血流而不是2D平面运动，对随机运动的反应较少，对对同侧刺激有强烈的偏好，对对侧和全场刺激的反应几乎相等。相比之下，CSv有一个明显的偏好，2D平面运动的3D流，没有响应随机运动，有一个弱的和不显着的偏侧，显着小于MST，并强烈喜欢全视野对侧刺激。此外，与V5/MT和MST相比，CSv具有更好的整合眼球运动与视网膜运动的能力。因此，CSv与V5+/MT+的不同之处在于它对全场、连贯和平面运动线索的独特偏好。这些结果将CSv置于一个很好的位置来处理与自我诱导运动相关的视觉线索，特别是与眼睛或头部侧向运动相关的视觉线索。
Motion processing regions apart from V5+/MT+ are still relatively poorly understood. Here, we used functional magnetic resonance imaging to perform a detailed functional analysis of the recently described cingulate sulcus visual area (CSv) in the dorsal posterior cingulate cortex. We used distinct types of visual motion stimuli to compare CSv with V5/MT and MST, including a visual pursuit paradigm. Both V5/MT and MST preferred 3D flow over 2D planar motion, responded less yet substantially to random motion, had a strong preference for contralateral versus ipsilateral stimulation, and responded nearly equally to contralateral and to full-field stimuli. In contrast, CSv had a pronounced preference to 2D planar motion over 3D flow, did not respond to random motion, had a weak and nonsignificant lateralization that was significantly smaller than that of MST, and strongly preferred full-field over contralateral stimuli. In addition, CSv had a better capability to integrate eye movements with retinal motion compared with V5/MT and MST. CSv thus differs from V5+/MT+ by its unique preference to full-field, coherent, and planar motion cues. These results place CSv in a good position to process visual cues related to self-induced motion, in particular those associated to eye or lateral head movements.
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