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首页> 外文期刊>Journal of vision >The perceived motion of three varieties of moving barberpole stimuli
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The perceived motion of three varieties of moving barberpole stimuli

机译：移动的Barberpole Stimuli的三种品种的感知运动

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In foveal view, the moving barberpole stimulus looks like several barber poles drifting horizontally. It is produced by a diagonal sinusoidal carrier grating with bars drifting up to the right, windowed by a raised, vertical, horizontally-drifting sinusoid. Unlike stationary barber poles, the rigid-motion direction of this stimulus is diagonal, not vertical. Previously, Chubb, Sun & Sperling (2012), demonstrated that pure vertical motion--the barber pole illusion (BPI)--was observed in peripheral but not foveal viewing. Hidden formatting deleted. Delete this text! yes" Experiments: Peripheral viewing. (1) Decreasing carrier temporal frequency below 10 Hz (enabling higher-order motion systems to participate) caused the perceived motion to deviate from BPI. As carrier speed approached zero, the overall motion (all that could be perceived peripherally) was perceived in the rigid (diagonal) direction . Thus, peripheral BPI in this stimulus requires first-order motion. (2) Flipping the carrier contrast between barber poles removed the global carrier fundamental component but had no effect on the perceived BPI. This shows that the first-order motion component on which BPI depends is local (within a pole) rather than global. (3) Filling the low-contrast regions between barber poles with flickering gratings (lateral masking) failed to abolish the peripheral BPI. In the fovea, the unmasked moving-barber-pole stimulus appears to move in complex patterns. Remarkably, the between-pole masking produced the simple BPI in the fovea. The between-pole masking removed the contrast modulation needed by higher-order motion systems to detect the horizontal pole movement and thereby masking equalized fovea and periphery. Conclusions. The vertical BPI in the moving barberpole stimulus cannot be explained by any Fourier motion components nor any combination thereof, nor by higher-order motion or feature-tracking. Consistent with Chubb et al (2012), the BPI in the moving barberpole stimulus is produced by a higher-order streaming process fed by first-order motion.
机译：在软体视野中，移动的摇滚刺激刺激看起来像几个黑砖杆水平漂流。它由对角线正弦载体载体光栅产生，该载体通过杠杆漂移到右侧，通过凸起的，垂直，水平漂移的正弦旋流窗口窗口。与固定式理发杆不同，该刺激的刚性运动方向是对角线，而不是垂直的。此前，CHUBB，SUN＆SPERLING（2012）展示了纯垂直运动 - 在外围观察到理发杆幻觉（BPI），但在外围观察，而不是心脏观察。隐藏格式删除。删除此文本！是“>实验：外围观察。（1）降低载波时间频率低于10Hz（使高阶运动系统参与）导致感知的动作偏离BPI。作为载波速度接近零，整体运动（所有这些都可以被感知在刚性（对角线）方向上感知。因此，这种刺激中的外围BPI需要一流的运动。（2）翻转理发杆之间的载体对比除去全球载体基本组分，但对感知没有影响BPI这表明BPI所取决于哪个第一阶运动组件是局部的（在极点内）而不是全球性。（3）用闪烁的光栅（横向遮蔽）填充理发杆之间的低对比度区域（横向遮蔽）未能消除外围设备BPI。在FOVEA中，未掩蔽的移动式理发杆刺激似乎以复杂的图案移动。显着的是，杆掩模在FOVEA中产生了简单的BPI。杆掩蔽r高阶运动系统所需的形成对比度调制，以检测水平极运动，从而掩蔽均衡的FOVEA和周边。结论。移动的Barberpole刺激中的垂直BPI不能通过任何傅里叶运动组件来解释，也不能通过其任何组合来解释，也不是由更高级的运动或特征跟踪来解释。与Chubb等人（2012）一致，移动的Barberpole刺激中的BPI由一级运动喂养的高阶流过程产生。

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