div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=electroencephalograph-during-feigned-sleep-in-the-opossumhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Electroencephalograph During ‘Feigned’ Sleep in the Opossum loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsnetreader035viewer20220721175750682a1a28ab0f07aee6aehtml5thumbnails1jpg width=140 height=200 divp© 1964 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=electroencephalograph-during-feigned-sleep-in-the-opossumhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Electroencephalograph During ‘Feigned’ Sleep in the Opossum loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsnetreader035viewer20220721175750682a1a28ab0f07aee6aehtml5thumbnails2jpg width=140 height=200 divp© 1964 Nature Publishing Grouppdiv