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Photic epilepsy problems raised in man and animals

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Abstract

The data gathered in 30 years’ study in man and in several animal species, but especially in the Papio papio baboon, tend to show that the cortex plays a decisive part in the seizure and interval discharges induced by intermittent light stimulation in photic epilepsy. two regions of the cortex predominate: the frontorolandic and occipital regions. The cortical cortex can, indeed, transmit or control the visual input to the frontorolandic region and can cause intermittent discharges in certain specific conditions in baboons and in certain human patients. The corticocortical pathway conveys the visual impulses to the frontorolandic cortex and is certainly modulated by deep structures like the reticular systems and the thalamus. At present no more can be said since further research is needed.

Sommario

I dati raccolti in 30 anni di studi nell’uomo e in differenti animali, ma specialmente sui babbuini Paio Papio tendono a dimostrare che la corteccia gioca un ruolo determinante sulle scariche ittali e interittali indotte dalla stimolazione luminosa intermittente nell’epilessia fotosensitiva. Due regioni corticali hanno un ruolo preminente: quella frontorolandica e la occipitale. La corteccia può, infatti, trasmettere o controllare gli afferenti visivi alla regione frontorolandica e può determinare scariche intermittenti in alcune specifiche condizioni nel babbuino e in alcuni, particolari pazienti fra gli uomini. La via cortico-corticale trasporta gli impulsi visivi alla corteccia frontorolandica ed è certamente modulata dalle strutture profonde come il sistema reticolare e il talamo. Per il momento non si può dire di più in quanto occorrono ulteriori e complementari esperimenti.

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  1. Laboratoire de Physiologia Merveuse, Départment dé Neurophysiologie Appliquée C.N.R.S., 91190, Gifsur-Yuette, France

    Naquet R., Menini Ch., Riche D., Silva-Barrat C. & Valin A.

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Naquet, R., Menini, C., Riche, D. et al. Photic epilepsy problems raised in man and animals. Ital J Neuro Sci 8, 437–447 (1987). https://doi.org/10.1007/BF02334600

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