期刊
BRAIN SCIENCES
卷 12, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/brainsci12101288
关键词
waveform coupling; EEG; polytherapy; slow wave; drug resistant epilepsy; anti-seizure medication; memory consolidation; anti-epilepsy drugs; sleep
资金
- Waterloo Foundation [2295-4322]
- Health and Care Research Wales
- European Research Council [681607]
- BRAIN Unit Infrastructure Award [UA05]
- Welsh Government through Health and Care Research Wales
- European Research Council (ERC) [681607] Funding Source: European Research Council (ERC)
There is a close relationship between sleep and epilepsy, and this study found that poly-ASM treatment not only changes specific sleep waveforms, but also impacts the coupling of spindles and slow waves. These findings are important for understanding the effects of ASM on sleep and memory in people with epilepsy.
There is a close bidirectional relationship between sleep and epilepsy. Anti-seizure medications (ASM) act to reduce seizure frequency but can also impact sleep; this remains a relatively unexplored field given the importance of sleep on seizure occurrence, memory consolidation, and quality of life. We compared the effect of poly-ASM treatment on a night of sleep compared to an unmedicated night in patients with drug-resistant epilepsy, where ASMs were withdrawn and later restored as part of their pre-surgical evaluation. Within-subject analysis between medicated and unmedicated nights showed ASMs increased spindle (11-16 Hz) power and decreased slow wave (0.1-2 Hz) amplitude. Spindles became less strongly coupled to slow waves in the ASM night compared to no-ASM night, with effects to both the phase and strength of coupling and correlated with slow wave reduction. These effects were not seen in age-matched controls from the same unit where ASMs were not changed between two nights. Overall, we found that ASM polytherapy not only changed specific sleep waveforms, but also the fine interplay of spindle/slow wave coupling. Since these sleep oscillations impact both seizure occurrence and memory consolidation, our findings provide evidence towards a decoupling impact of ASMs on sleep that should be considered in future studies of sleep and memory disruption in people with epilepsy.
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