Apparent Motion: Event-Related Functional Magnetic Resonance Imaging of Perceptual Switches and States
Apparent Motion: Event-Related Functional Magnetic Resonance Imaging of Perceptual Switches and States
复制标题
表观运动：感知开关和状态的事件相关功能磁共振成像
作者：
L. Muckli;N. Kriegeskorte;H. Lanfermann;F. Zanella;W. Singer;R. Goebel
当空间隔离的视觉刺激交替出现时，受试者可能会感知到在两个位置之间移动的单个刺激（表观运动）。通过调整空间和时间参数，可以创建一种模糊条件，其中来回运动的感知与两个静止眨眼刺激的感知交替。我们向受试者提供这种模糊的刺激，要求他们发出感知运动和眨眼的信号，并通过功能磁共振成像测量大脑活动。多元回归分析显示，早期视觉区域在两种知觉条件下的反应强度相同，而 hMT+(V5)（人类运动复合体，包括 MT 及其卫星的人类同源物）在视运动感知期间更加活跃。这些结果表明，hMT+ 中的神经元参与了从不连续视觉输入创建连续运动感知的构建过程。
When spatially segregated visual stimuli are presented in alternation, subjects may perceive a single stimulus moving between the two positions (apparent motion). By adjusting spatial and temporal parameters, an ambiguous condition can be created in which perception of back-and-forth motion alternates with the perception of two stationary blinking stimuli. We presented subjects with such ambiguous stimuli, asked them to signal periods of perceived motion and blinking, and measured brain activity with functional magnetic resonance imaging. Multiple regression analysis revealed that early visual areas responded with equal strength during both perceptual conditions, whereas hMT+(V5) (the human motion complex that includes the human homolog of MT and its satellites) was more active during the perception of apparent motion. These results indicate that neurons in hMT+ participate in the constructive process that creates a continuous motion percept from a discontinuous visual input.
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影响因子：
56.9
作者：
SALZMAN, CD;NEWSOME, WT
通讯作者：
NEWSOME, WT
影响因子：
2.5
作者：
CELEBRINI, S;NEWSOME, WT
通讯作者：
NEWSOME, WT
影响因子：
2.5
作者：
Beauchamp, MS;Cox, RW;DeYoe, EA
通讯作者：
DeYoe, EA
影响因子：
56.9
作者：
LOGOTHETIS, NK;SCHALL, JD
通讯作者：
SCHALL, JD