Alfred Stauffer

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The lock-step phenomenon (LSP) is the occurrence of postganglionic cardiac sympathetic discharge (PCSD) and cortical epileptiform activity (EA) in a time-locked fashion. The relationship between the LSP and precipitous changes in blood pressure (PCBP: greater than 23 mm Hg in 10 sec) was determined in 9 cats after EA was induced with pentylenetetrazol(More)
Cats were anesthetized with alpha-chloralose and pentylenetetrazol, 10 and/or 20 mg were administered intracerebroventricularly (i.c.v.) to elicit epileptiform activity, including both interictal and ictal discharges. Timolol, 10, 100, 500 micrograms/kg i.c.v. and 1, 5, 10 and/or 20 mg/kg i.v., was administered at 5 min intervals to determine whether it(More)
The structure of the extensible (alloscutum) and inextensible (scutum) integument of the nymph, Amblyomma variegatum was examined during the whole bloodmeal and the nymphal-adult moulting cycle. Integumental events were tentatively correlated with the ecdysteroid levels measured by radioimmunoassay. We observed that all the integumental events were realised(More)
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