New PDF release: Colloquium on Vision: From Photon to Perception (NAS

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Additional resources for Colloquium on Vision: From Photon to Perception (NAS Colloquium)

Sample text

1). Wiesel and Hubel (8) described a second, Type 2, opponent cell class, which also appeared to receive excitatory and inhibitory input from different cone types, but which lacked a clear center–surround organization. Instead, opposing cone inputs were distributed in spatially coextensive ON and OFF responding fields (Fig. 1). As recognized by Hubel and Wiesel and others to follow, this Type 2 receptive-field organization suggested a specialization for color coding independent of any role in spatial vision.

Abbreviations: L-cone, M-cone, and S-cone, cone photoreceptors maximally sensitive to long, middle and short wavelengths; LED, light-emitting diode; LGN, lateral geniculate nucleus. *To whom reprint requests should be addressed. About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files. Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained, and some typographic errors may have been accidentally inserted.

Schein, S. , Tsukamoto, Y. & Sterling, P. (1995) Soc. Neurosci. Abstr. 23, 1257. 30. Green, D. G. (1972) J. Physiol. (London) 222, 419–426. 31. Williams, D. R. & Collier, R. (1983) Science 221, 385–387. 32. Reid, R. C. & Shapley, R. M. (1992) Nature (London) 356, 716–718. 33. , Lee, B. B. & Kremers, J. (1995) J. Opt. Soc. Am. 12, 456–464. 34. Kolb, H. & Dekorver, L. (1991) J. Comp. Neurol. 303, 617–636. 35. Calkins, D. , Schein, S. , Tsukamoto, Y. & Sterling, P. (1994) Nature (London) 371, 70–72.

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