Sleep research: coloured screen wave output from a polysomnigram of a sleeping subject. The top blue line represents an electroencephalogram (EEG) wave and the green trace at bottom corresponds to rapid eye movements. The changes observed using an EEG in normal sleep are often more dramatic than those relating to disease conditions | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hobson, Allan |
Bildgröße: | 3818 px × 2480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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