Unequal representation of cardinal and oblique contours in ferret visual cortex
Unequal representation of cardinal and oblique contours in ferret visual cortex
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DOI：
10.1073/pnas.95.5.2621
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发表时间：
1998-03-03
影响因子：
11.1
通讯作者：
Purves, D
中科院分区：
文献类型：
--
作者：
Coppola, DM;White, LE;Purves, D
我们通过内在信号的光学成像测量了 25 只成年雪貂中不同方向的光栅激活的皮层空间量。平均而言，与斜角轮廓相比，垂直和水平轮廓优先激活的暴露视觉皮层面积多出 7%。这种各向异性可能反映了现实世界中基轴轮廓的普遍性，并且可以解释许多动物对垂直和水平刺激的更大敏感性。
We have measured the amount of cortical space activated by differently oriented gratings in 25 adult ferrets by optical imaging of intrinsic signal. On average, 7% more area of the exposed visual cortex was preferentially activated by vertical and horizontal contours than by contours at oblique angles. This anisotropy may reflect the real-world prevalence of contours in the cardinal axes and could explain the greater sensitivity of many animals to vertical and horizontal stimuli.