The Kindling Phenomenon
The Kindling Phenomenon
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DOI:
10.1016/b978-012088554-1/50030-x
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发表时间:
2006-01-01
期刊:
影响因子:
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通讯作者:
McIntyre, Dan C.
中科院分区:
文献类型:
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作者:
McIntyre, Dan C.
Since its initial discovery by Graham Goddard (1967), and its later naming by Goddard et al.(1969), the kindling phenomenon has been employed extensively as a chronic model of temporal lobe epilepsy (TLE). Kindling initially presents itself as a simple phenomenon, whereby provocation of focal seizures (most commonly using focal electrical brain stimulation) induces a clear progressive change in response over daily repetitions. The progression begins on the first day with a brief, low frequency electrographic afterdischarge (AD) at the electrode tip, which is associated with little behavioral response. However, the complexity of the phenomenon begins to appear as the response evolves over days, resulting eventually in the triggering of long, high frequency ADs associated with strong convulsive responses (Goddard et al., 1969). This progression is readily apparent from all limbic and most forebrain stimulation sites, but it is most dramatic from temporal lobe structures, such as the amygdala and adjacent cortices, including the piriform, perirhinal, insular, and entorhinal cortices (McIntyre et al., 1999). It is the daily progressive increase in response severity in both the EEG and behavior that defines kindling. From this brief description, it should be apparent that kindling initially models focal partial seizures. However, with daily repetitions, and the recruitment from the focus that precipitates the spread of seizures, kindling comes to model complex partial seizures with secondary generalization—particularly as consciousness is lost during these more complex events (McIntyre, 1970, 1979). Ultimately, after many days of triggering kindled seizures by the experimenter, seizures begin to appear spontaneously, ie, without application of the kindling stimulus (eg, Pinel et al., 1975;