Neural correlates of transformational apparent motion
Neural correlates of transformational apparent motion
复制标题
变换视运动的神经相关性
DOI：
10.1016/j.neuroimage.2005.12.029
复制
发表时间：
2006
期刊：
影响因子：
5.7
通讯作者：
P. Tse
中科院分区：
文献类型：
--
作者：
P. Tse
当一个图形离散和瞬间改变其形状时，观察者通常不会察觉到实际发生的形状之间的突然过渡。相反，感知到连续的形状变化。虽然这种虚幻的“转换视运动”（TAM）是视觉系统的一个错误结构，但它不是任意的。从可以推断出的许多可能的形状变化中，通常只有一个被感知到，因为只有一个符合视觉系统用于（1）在场景中将图形彼此分割以及（2）在连续场景中将图形与自己匹配的基于形状的规则。TAM需要处理形式关系的神经元回路与计算运动轨迹的回路之间的交互。特别是，这种形式-运动的相互作用必须发生在TAM被感知之前，因为感知到的运动方向是由连续图像中人物之间的形式关系决定的。本fMRI研究（n = 19）提供的第一个证据表明，形式（海马，后梭状回）和运动（hMT+）处理区更活跃时，TAM被认为比在控制刺激，它不是。在一个受试者子集中绘制视网膜定位区（n = 10）、hMT+（n = 7）和hMT+（n = 7）。结果如下：有更大的BOLD响应TAM比控制条件下，在V1和所有随后的retinotopic地区，以及在hMT+和hMT+，这表明该地区的处理形式与hMT+相互作用，以构建移动的数字的感知。
When a figure discretely and instantaneously changes its shape, observers typically do not perceive the abrupt transition between shapes that in fact occurs. Rather, a continuous shape change is perceived. Although this illusory “transformational apparent motion” (TAM) is a faulty construction of the visual system, it is not arbitrary. From the many possible shape changes that could have been inferred, usually just one is perceived because only one is consistent with the shape-based rules that the visual system uses to (1) segment figures from one another within a scene and (2) match figures to themselves across successive scenes. TAM requires an interaction between neuronal circuits that process form relationships with circuits that compute motion trajectories. In particular, this form–motion interaction must happen before TAM is perceived because the direction of perceived motion is dictated by form relationships among figures in successive images. The present fMRI study (n = 19) provides the first evidence that both form (LOC, posterior fusiform gyrus) and motion (hMT+) processing areas are more active when TAM is perceived than in a control stimulus where it is not. Retinotopic areas (n = 10), hMT+ (n = 7), and LOC (n = 7) were mapped in a subset of subjects. Results: There is greater BOLD response to TAM than to the control condition in V1 and all subsequent retinotopic areas, as well as in hMT+ and the LOC, suggesting that areas that process form interact with hMT+ to construct the perception of moving figures.
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DOI：
10.1037/0096-1523.22.6.1505
发表时间：
1996-12-01
影响因子：
2.1
作者：
Yantis, S;Jonides, J
通讯作者：
Jonides, J
DOI：
10.1073/pnas.92.18.8135
发表时间：
1995-08-29
影响因子：
11.1
作者：
MALACH, R;REPPAS, JB;TOOTELL, RBH
通讯作者：
TOOTELL, RBH
影响因子：
2.5
作者：
Kastner, S;De Weerd, P;Ungerleider, LG
通讯作者：
Ungerleider, LG
DOI：
10.1016/s0926-6410(96)00041-9
发表时间：
1996-12-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Kanwisher, N;Chun, MM;Ledden, PJ
通讯作者：
Ledden, PJ
影响因子：
56.9
作者：
SERENO, MI;DALE, AM;TOOTELL, RBH
通讯作者：
TOOTELL, RBH