Consciousness After Complete Surgical Section of the Fore — Brain Commissures in Man
For several years I have been concerned with a certain aspect of consciousness, i.e. the ability of self-reference by recognising self-attributions or photographs of oneself. In the following I shall present some results of attempts to test for this capacity in both hemispheres of ‘split-brain’ patients. In doing so, I shall include some observations made in preliminary tests with only one subject (NG), who has been described as one of the patients most representative of the disconnection syndrome (Sperry et al., 1969). I think that these observations illustrate the difficulties in testing commissurotomy patients, which in turn tells something about the hemisphere functions in these patients.
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- Bogen, J. E. and Vogel, P. J. (1975). Neurologic status in the long term following complete cerebral commissurotomy. In Les syndromes de disconnexion calleuse chez l’homme (F. Michel and B. Schott, eds.), Hôpital Neurologique, LyonGoogle Scholar
- Gellermann, L. W. (1933). Chance orders of alternating stimuli in visual discrimi-nation experiments. J. genet. Psychol., 42, 206–208Google Scholar
- Preilowski, B. (1975a). Bilateral motor interaction: perceptual-motor perfor-mance of partial and complete ‘split-brain’ patients. In Cerebral Localization, (K. J. Zülch, O. Creutzfeldt and G. C. Galbraith, eds.), Springer, BerlinGoogle Scholar
- Preilowski, B. (1975b). Facial self-recognition after separate right and left hemisphere stimulation in two patients with complete cerebral commissurotomy. Expl Brain Res., 23 (suppl.), 165Google Scholar
- Sperry, R. W. (1952). Neurology and the mind-brain problem. Am. Scient., 40, 291–312Google Scholar
- Sperry, R. W. (1966). Brain bisection and mechanisms of consciousness. In Brain and Conscious Experience (J. C. Eccles, ed.), Springer, New YorkGoogle Scholar
- Sperry, R. W., Gazzaniga, M. S. and Bogen, J. E. (1969). Interhemispheric relationships: the neocortical commissures; syndromes of hemisphere disconnection. In Handbook of Clinical Neurology, vol. IV (P. J. Vinken and G. W. Bruyn, eds.), North-Holland, AmsterdamGoogle Scholar
- Strong, P. (1970). Biophysical Measurements, Tektronix Inc., Beaverton, OregonGoogle Scholar
- Trevarthen, C. (1974). Analysis of cerebral activities that generate and regulate consciousness in commissurotomy patients. In Hemisphere Function in the Human Brain, (S. J. Dimond and J. G. Beaumont, eds.), Elek, LondonGoogle Scholar
- Zaidel, E. (1973). Linguistic competence and related functions in the right cerebral hemisphere of man following commissurotomy and hemispherectomy. Unpubl. doct. dissert., California Institute of TechnologyGoogle Scholar