MEG Tomography of Human Cortex and Brainstem Activity in Waking and REM Sleep Saccades

Andreas A. Ioannides*, Maria Corsi-Cabrera, Peter B C Fenwick, Yolanda Del Rio Portilla, Nikos A. Laskaris, Ara Khurshudyan, Dionyssios Theofilou, Tadahiko Shibata, Sunao Uchida, Tetsuo Nakabayashi, George K. Kostopoulos


研究成果: Article査読

109 被引用数 (Scopus)


We recorded the magnetoencephalographic (MEG) signal from three subjects before, during and after eye movements cued to a tone, self-paced, awake and during rapid eye movement (REM) sleep. During sleep we recorded the MEG signal throughout the night together with electroencephalographic (EEG) and electromyographic (EMG) channels to construct a hypnogram. While awake, just prior to and during eye movements, the expected well time-locked physiological activations were imaged in pontine regions, with early 3 s priming. Activity in the frontal eye fields (FEF) was identified in the 300 ms before the saccade onset. Visual cortex activation occurred 200 ms after saccades. During REM, compared to the eyes closed awake condition, activity was higher in supplementary motor area (SMA) and lower in inferior parietal and precuneus cortex. Electroocculographic (EOG) activity just prior to REM saccades correlated with bilateral pontine and FEF activity some 250-400 ms before REM saccade onset, which in turn was preceded 200 ms earlier by reciprocal activation of the pons and FEF. An orbitofrontal-amygdalo-parahippocampal-pontine sequence, possibly related to emotional activation during REM sleep, was identified in the last 100 ms leading to the REM saccade, but not linked to saccade initiation.

ジャーナルCerebral Cortex
出版ステータスPublished - 2004 1月

ASJC Scopus subject areas

  • 神経科学(全般)


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