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• W2891656577 abstract "<b><i>Background/Aims:</i></b> There are reports that microelectrode recording (MER) can be performed under certain anesthetized conditions for functional confirmation of the optimal deep brain stimulation (DBS) target. However, it is generally accepted that anesthesia affects MER. Due to a potential role of local field potentials (LFPs) in DBS functional mapping, we characterized the effect of propofol on globus pallidus interna (GPi) and externa (GPe) LFPs in Parkinson disease (PD) patients. <b><i>Methods:</i></b> We collected LFPs in 12 awake and anesthetized PD patients undergoing DBS implantation. Spectral power of β (13–35 Hz) and high-frequency oscillations (HFOs: 200–300 Hz) was compared across the pallidum. <b><i>Results:</i></b> Propofol suppressed GPi power by &#x3e; 20 Hz while increasing power at lower frequencies. A similar power shift was observed in GPe; however, power in the high β range (20–35 Hz) increased with propofol. Before anesthesia both β and HFO activity were significantly greater at the GPi (χ² = 20.63 and χ² = 48.81, <i>p</i> &#x3c; 0.0001). However, during anesthesia, we found no significant difference across the pallidum (χ² = 0.47, <i>p</i> = 0.79, and χ² = 4.11, <i>p</i> = 0.12). <b><i>Conclusion:</i></b> GPi and GPe are distinguishable using LFP spectral profiles in the awake condition. Propofol obliterates this spectral differentiation. Therefore, LFP spectra cannot be relied upon in the propofol-anesthetized state for functional mapping during DBS implantation." @default.
• W2891656577 created "2018-09-27" @default.
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• W2891656577 date "2018-01-01" @default.
• W2891656577 modified "2023-09-26" @default.
• W2891656577 title "Propofol Anesthesia Precludes LFP-Based Functional Mapping of Pallidum during DBS Implantation" @default.
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• W2891656577 doi "https://doi.org/10.1159/000492231" @default.
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