1. Binggeli, R. L., and Paule, W. J., 1969, The pigeon retina: Quantitative aspects of the optic nerve and ganglion cell layer, J. Comp. Neurol. 137: 1–18.
2. Bloch-Rojas, S., Toro, A., and Pinto-Hamuy, T., 1964, Cardiac versus somatomotor conditioned responses in neodecorticate rats, J. Comp. Physiol. Psychol. 58: 233–236.
3. Bullock, T. H., 1967, Simple systems for the study of learning mechanisms, in Neurosciences Research Symposium Summaries, Vol. 2, F. O. Schmitt, T. Melnechuk, G. C. Quarton, and G. Adelman, eds., The M.I.T. Press, Cambridge, pp. 203–327.
4. Campbell, H. S., and Smith, J. L., 1962, The pharmacology of the pigeon pupil, Arch. Opthamol. 67: 141–144.
5. Cohen, D. H., 1967, The hyperstriatal region of the avian forebrain: A lesion study of possible functions, including its role in cardiac and respiratory conditioning, J. Comp. Neurol. 131: 559–570.