Papers Published
- Coppola, DM; White, LE; Fitzpatrick, D; Purves, D, Unequal representation of cardinal and oblique contours in ferret visual cortex.,
Proceedings of the National Academy of Sciences of the United States of America, vol. 95 no. 5
(March, 1998),
pp. 2621-2623 [9482936], [doi].
(last updated on 2023/06/01)
Abstract: 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.
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