Unequal representation of cardinal and oblique contours in ferret visual cortex

被引：142

作者：

Coppola, DM ^{[1
]}

White, LE ^{[1
]}

Fitzpatrick, D ^{[1
]}

Purves, D ^{[1
]}

机构：

[1] Duke Univ, Med Ctr, Dept Neurobiol, Durham, NC 27710 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1998年 / 95卷 / 05期

关键词：

D O I：

10.1073/pnas.95.5.2621

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：2621 / 2623

页数：3

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