cortical spreading depression (csd) are associated with dramatic failure of brain ion homeostasis, efflux of excitatory amino acids from nerve cells, increased energy metabolism and changes in cerebral blood flow. there is strong clinical and experimental evidence to suggest that csd is involved in the mechanism of migraine, stroke, subarachnoid hemorrhage and traumatic brain injury. therefore,...

objective headache is a frequent symptom in children and adolescents. migraine is one of the most common types of primary headache disorders in children that at times can be extremely disabling. many clinical features of migraine in children differ from that starting in adulthood. this review discusses the epidemiology,clinical features, management, and prognosis of migraine headache in childre...

If your home freezer has been covered with floodwater, there is a good chance that seepage damaged the food inside. This food should be discarded even if no flood waters covered the freezer or seeped inside. Some foods may be unsafe due to power outage. The amount and type of food inside the freezer will determine whether it can be saved. A full, freestanding freezer will stay at freezing tempe...

Results of cognitive psychology research are analysed to explain why it is diicult for retrieval system users to bring to mind alternative search terms. A human memory model is modiied in such a way that it produces additional search terms instead of human associations. A small experiment shows that such a spreading activation network can nd alternative terms-with a performance similar to the n...

Research on the cognitive consequences of bilingualism suggests a bilingual advantage: early experience with more than one language predicts better inhibitory control of attention. The mechanisms responsible for this advantage, however, are not well understood. We ask whether depth and time-course of memory encoding may be responsible. We measured bilingual and monolingual adults’ memory for no...

Floodwater Aedes breeding habitats in central Kenya were sequentially flooded to determine the numbers of mosquito eggs hatching during each flooding. Approximately 90% of the larvae sampled during 4 floodings emerged during the initial flooding. The number of Aedes eggs hatching during the second flooding was lowest of all 4 floodings, and no significant differences in the amount of egg hatchi...

The problem of deciding what is implied by a written text. of “reading between the lines” is the problem of text Inference. To extract proper inferences from a text requires a great deal of generol knowledge on the port of the reader. Past approaches have often used a “strong method” tuned to process a particular kind of knowledge structure (such OS a script, or a plan). The alternative is a “w...