Visual Motion Responses in the Posterior Cingulate Sulcus: A Comparison to V5/MT and MST

被引:59
作者
Fischer, Elvira [1 ,2 ]
Buelthoff, Heinrich H. [2 ,3 ]
Logothetis, Nikos K. [2 ,4 ]
Bartels, Andreas [1 ,2 ]
机构
[1] Univ Tubingen, Vis & Cognit Lab, Ctr Integrat Neurosci, D-72076 Tubingen, Germany
[2] Max Planck Inst Biol Cybernet, D-72076 Tubingen, Germany
[3] Korea Univ, Dept Brain & Cognit Engn, Seoul 136713, South Korea
[4] Univ Manchester, Div Imaging Sci & Biomed Engn, Manchester M13 9PT, Lancs, England
关键词
CSv; eye movements; flow; fMRI; pursuit; self-motion; PURSUIT EYE-MOVEMENTS; CORTICAL AREAS MT; OPTIC FLOW; HUMAN BRAIN; VESTIBULAR SIGNALS; NEURONAL RESPONSES; NEURAL MECHANISMS; TEMPORAL AREA; PLUS COMPLEX; CORTEX;
D O I
10.1093/cercor/bhr154
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
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.
引用
收藏
页码:865 / 876
页数:12
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