Laboratorio de Cronobiología y Sueño, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñiz", Dirección de Investigaciones en Neurociencias, CDMX, México.
Laboratorio de Neurofisiología de la Conducta Reproductiva, Instituto de Neurociencias, CUCBA, Universidad de Guadalajara, Guadalajara, Jalisco, México.
Am J Primatol. 2020 Aug;82(8):e23162. doi: 10.1002/ajp.23162. Epub 2020 Jun 18.
The study of electroencephalographic (EEG) activity during sleep in the spider monkey has provided new insights into primitive arboreal sleep physiology and behavior in anthropoids. Nevertheless, studies conducted to date have maintained the frequency ranges of the EEG bands commonly used with humans. The aim of the present work was to determine the EEG broad bands that characterize sleep and wakefulness in the spider monkey using principal component analysis (PCA). The EEG activity was recorded from the occipital, central, and frontal EEG derivations of six young-adult male spider monkeys housed in a laboratory setting. To determine which frequencies covaried and which were orthogonally independent during sleep and wakefulness, the power EEG spectra and interhemispheric and intrahemispheric EEG correlations from 1 to 30 Hz were subjected to PCA. Findings show that the EEG bands detection differed from those reported previously in both spider monkeys and humans, and that the 1-3 and 2-13 Hz frequency ranges concur with the oscillatory activity elucidated by cellular recordings of subcortical regions. Results show that applying PCA to the EEG spectrum during sleep and wakefulness in the spider monkey led to the identification of frequencies that covaried with, and were orthogonally independent of, other frequencies in each behavioral vigilance state. The new EEG bands differ from those used previously with both spider monkeys and humans. The 1-3 and 2-13 Hz frequency ranges are in accordance with the oscillatory activity elucidated by cellular recordings of subcortical regions in other mammals.
对蜘蛛猴睡眠时脑电图（EEG）活动的研究为灵长类动物原始树栖睡眠生理学和行为提供了新的见解。然而，迄今为止进行的研究仍然维持了常用于人类的 EEG 波段的频率范围。本研究旨在使用主成分分析（PCA）确定蜘蛛猴睡眠和觉醒时的 EEG 宽带。通过对 6 只生活在实验室环境中的成年雄性蜘蛛猴的枕部、中央和额部 EEG 导联进行记录，获得 EEG 活动。为了确定在睡眠和觉醒期间哪些频率协变，哪些频率正交独立，对 1 至 30 Hz 的 EEG 功率谱和大脑左右半球间和大脑半球内 EEG 相关性进行 PCA。研究结果表明，在蜘蛛猴和人类中，EEG 带的检测结果与之前的报道不同，1-3 Hz 和 2-13 Hz 的频率范围与皮质下区域细胞记录阐明的振荡活动一致。结果表明，在蜘蛛猴的睡眠和觉醒期间对 EEG 频谱进行 PCA 分析，可识别与每个行为警觉状态中的其他频率协变且正交独立的频率。新的 EEG 带与之前在蜘蛛猴和人类中使用的带不同。1-3 Hz 和 2-13 Hz 的频率范围与其他哺乳动物的皮质下区域细胞记录阐明的振荡活动一致。
