Neural correlates of the stereokinetic effect revealed by functional magnetic resonance imaging.
Neural correlates of the stereokinetic effect revealed by functional magnetic resonance imaging.
复制标题
功能磁共振成像揭示立体动力学效应的神经相关性。
DOI：
10.1167/8.10.14
复制
发表时间：
2008
影响因子：
1.8
通讯作者：
Y. Ejima
中科院分区：
文献类型：
--
作者：
Tetsuya Yamamoto;Shigeko Takahashi;T. Hanakawa;S. Urayama;T. Aso;H. Fukuyama;Y. Ejima
立体运动效应(SKE)指的是一种视觉现象，在这种视觉现象中，一个二维图形绕着视轴在平行的平面上旋转，可以产生三维物体的印象。尽管SKE的几个特征表明SKE涉及的知觉机制可能不同于动力学深度效应(KDE)，但SKE和KDE在神经机制上的差异尚未得到研究。为了确定SKE涉及的皮质区域，我们在一系列功能磁共振成像实验中呈现了各种SKE刺激，控制了运动和对比能量以及刺激呈现范式。在颞中复合体(HMT+)、枕外侧区(LO)、V3B区、颞下回(ITG)、梭形回(FG)和顶前沟背侧(DIPSA)观察到与SKE相关的皮质激活。另一方面，静态版本的SKE刺激也激活了ITG、FG和Dipsa。HMT+、LO和V3B也已知在KDE中被激活。这些发现表明，一般的运动相关的3-D物体加工可以在这些区域进行。
The stereokinetic effect (SKE) refers to a visual phenomenon in which a two-dimensional figure rotating in the fronto-parallel plane about the visual axis can create the impression of a three-dimensional (3-D) object. Although several characteristics of SKE suggest that the perceptual mechanisms involved in SKE may differ from those of the kinetic depth effect (KDE), the differences between SKE and KDE in neural mechanisms have not yet been investigated. In order to determine the cortical areas involved in SKE, we presented a variety of SKE stimuli in a series of functional magnetic resonance imaging experiments, controlling for motion and contrast energies as well as stimulus presentation paradigm. Cortical activation associated with SKE was observed in the middle temporal complex (hMT+), lateral occipital area (LO), V3B, inferior temporal gyrus (ITG), fusiform gyrus (FG), and dorsal intraparietal sulcus anterior (DIPSA). On the other hand, ITG, FG, and DIPSA were also activated by the static versions of SKE stimuli. hMT+, LO, and V3B are also known to be activated in KDE. These findings suggest that general motion-dependent 3-D object processing may be performed in these areas.
影响因子：
2.5
作者：
GNADT, JW;MAYS, LE
通讯作者：
MAYS, LE
影响因子：
56.9
作者：
NAWROT, M;BLAKE, R
通讯作者：
BLAKE, R