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Publications [#268417] of Dale Purves

Duke :: Philosophy :: Faculty :: Dale Purves

Papers Published

  1. 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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