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- W2155694654 abstract "Running and tonic convulsions induced by sound stimulation (audiogenic seizures, AS) are known to be brainstem-dependent, but their repeated induction leads to the recruiting forebrain structures into AS expression manifested by the development of clonic convulsions and cortical epileptic activity (audiogenic kindling). Behavioral and electrophysiological manifestations of audiogenic kindling were studied in AS-prone WAG/Rij rats exhibiting two types of genetically determined generalized seizures: convulsive audiogenic and nonconvulsive absence (spontaneous spike-wave discharges generated by thalamocortical circuits). Twenty three repeated (with 2 days intervals) sound stimulations inducing a short running episode led to a progressive increase in AS duration from 6.2 ± 0.4 s to 24.7 ± 2.9 s mainly due to the appearance of additional postrunning facialforelimb clonic convulsions of increasing duration and severity. Fully kindled (Racine’s stage 5) seizures were accompanied by a bilateral slow-potential wave of cortical spreading depression (SD) nonsynaptically propagating to both striata and by a long-term postictal suppression of spontaneous absence seizures. Neither corticostriatal SD, nor the spike-wave discharges suppression were observed after running induced by sound in nonkindled rats or by attenuated (subthreshold for clonus) sound in kindled rats. Subthreshold stimulation of kindled rats provoked postictal high-amplitude spiking in the cortex. It is concluded that the recruitment of the cortex into a kindled AS network triggers a corticostriatal SD which may underlie the postictal inhibition of nonconvulsive seizures, which follow the kindled AS." @default.
- W2155694654 created "2016-06-24" @default.
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- W2155694654 date "2004-01-01" @default.
- W2155694654 modified "2023-09-27" @default.
- W2155694654 title "ÄÛ‰ËÓÂÌÌ˚È ÍË̉ÎËÌ Û Í˚Ò WAG/Rij: ËÁÏÂÌÂÌË Ôӂ‰Â̘ÂÒÍËi Ë ˝ÎÂÍÚÓÙËÁËÓÎÓ˘ÂÒÍËi ‡͈ËÈ Ì‡ ÔÓ‚ÚÓÌÓ Ô‰˙fl‚ÎÂÌË ÍÓÓÚÍÓÈ Á‚ÛÍÓ‚ÓÈ ÒÚËÏÛÎflˆËË" @default.
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