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The authors report the results of a retrospective controlled study on the incidence of migraine in centro-temporal epilepsy compared to absence epilepsy, partial epilepsy and a group of patients with cranial trauma without epilepsy. The following observations from this series of 129 patients were made. Migraine was present in 63% of the patients with centro-temporal epilepsy (rolandic epilepsy), in 33% with absence epilepsy, in 7% with partial epilepsy and in 9% of the cranial trauma group. These results suggest that the association of centro-temporal epilepsy and migraine is non-fortuitous and also to a lesser degree in absence epilepsy. The role of neurotransmitters in this association is discussed. No decrease in cerebral blood flow was observed in 12 patients with rolandic epilepsy on a Hm-PAO SPECT study.

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On a visual backward masking task using color stimuli with an achromatic patterned mask, we compared the masking performances of 3 Type I diabetics with those of 9 participants in a control group. Analysis indicated that the diabetics show a marked decrement in performance with blue stimuli and a lesser decrement with red stimuli. Suggestions for further theoretical and parametric studies are discussed.