Amygdala and hippocampus are symptomatogenic zones for central apneic seizures

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Lacuey N, Zonjy B, Londono L, et al. (2017) Amygdala and hippocampus are symptomatogenic zones for central apneic seizures. Neurology. 2017 Feb 14;88(7):701-705.

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Abstract: OBJECTIVE: To identify limbic sites of respiratory control in the human brain, and by extension, the symptomatogenic zone for central apnea. METHODS: We used direct stimulation of anatomically, precisely placed stereotactic EEG electrodes to analyze breathing responses. We prospectively studied 3 patients who were explored with stereotactically implanted depth electrodes. The amygdala and hippocampus, as well as extralimbic sites (orbitofrontal, temporal tip, and temporal neocortex), were investigated. RESULTS: Individual stimulation of the amygdala and hippocampal head consistently elicited central apnea in the expiratory phase, as did exquisitely focal hippocampal seizures. CONCLUSIONS: These findings confirm that hippocampus and amygdala are limbic breathing control sites in humans, as well as the symptomatogenic zone for central apneic seizures.

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