Abstract:
:Several lines of evidence suggest that the amygdala is altered functionally in humans with temporal lobe epilepsy, but little is known about neuronal interactions in the amygdala of humans or animals with chronic epilepsy. Using extracellular and intracellular recordings in horizontal slices, we tested the hypothesis that changes in local circuitry in the basolateral amygdala (BLA) permanently enhance neuronal responsiveness in kainate-treated, epileptic rats. Population responses in the BLA to orthodromic stimulation were significantly enhanced, which was at least partly due to a decrease in local inhibition. In the presence of GABA receptor antagonists, population responses were about twice as robust in epileptic versus control rats. We conclude that the enhanced neuronal responsiveness of the BLA in this model of temporal lobe epilepsy involves decreased inhibition, but may also include increased excitation.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Smith BN,Dudek FEdoi
10.1016/s0304-3940(97)13326-2subject
Has Abstractpub_date
1997-01-24 00:00:00pages
1-4issue
1eissn
0304-3940issn
1872-7972pii
S0304-3940(97)13326-2journal_volume
222pub_type
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