Cutaneous and Proprioceptive Input to the Corpus Callosum in the Cat
The callosal interhemispheric transfer enables animals to solve with the untrained paw somaesthetic discriminations involving the use of tactile or proprioceptive cues, at a level of performance as high as that reached by the trained paw. At least for cats, there is well-documented evidence that the interhemispheric transfer of somaesthetic discrimination learning takes place at the level of the somatosensory receiving areas (Teitelbaum et al., 1968). It was shown in fact, in callosum-intact cats, that the occurrence of the somaesthetic transfer is precluded either by the ablation of the first (SI) or of the second (SII) somatosensory area of the trained hemisphere and also by the ablation of SII, but not of SI, of the untrained hemisphere.
Unable to display preview. Download preview PDF.
- Caminiti, R., Innocenti, G. M. and Manzoni, T. (1977). The ‘callosal zone’ in the first and second somatosensory areas of the cat. Neurosci. Abstr., 3, 66Google Scholar
- Innocenti, G. M., Manzoni, T. and Spidalieri, G. (1972). Risposte topiche callosali a stimoli cutanei. Atti Accad. Naz. Lincei, Cl. Sci. Fis., Mat. Nat., ser. VIII, 52, 952–59Google Scholar
- Manzoni, T., Michelini, S. and Spidalieri, G. (1975). Transfer callosale di impulsi profondi di diversa origine recettoriale. Atti Accad. Naz. Lincei, Cl. Sci. Fis., Mat. Nat., ser. VIII, 58, 656–61Google Scholar
- Matthews, P. B. C. (1972). Mammalian Muscle Receptors and their Central Actions, Edward Arnold, LondonGoogle Scholar
- Mountcastle, V. B. (1974). Neural mechanisms in somaesthesia. In Medical Physiology, vol. I (V. B. Mountcastle, ed.), Mosby, St Louis, pp. 307–47Google Scholar
- Sweet, J. E. and Bourassa, C. M. (1967). Comparison of sensory discrimination threshold with muscle and cutaneous nerve volleys in the cat. J. NeurophysioL, 30, 530–45Google Scholar