stage ii sleep. on this transverse montage, there is a k-complex in the fifth second, with its...
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![Page 1: Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and](https://reader035.vdocument.in/reader035/viewer/2022062407/56649da65503460f94a924c7/html5/thumbnails/1.jpg)
Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with itstypical broad duration (>500 ms), diphasic morphology, and overriding spindle. There are alsoabundant spindles before and after.
![Page 2: Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and](https://reader035.vdocument.in/reader035/viewer/2022062407/56649da65503460f94a924c7/html5/thumbnails/2.jpg)
Stage II sleep. There are typical spindles in the central regions, as well as theta and some deltafrequencies. Various amounts of slow are often seen in stage II sleep.
![Page 3: Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and](https://reader035.vdocument.in/reader035/viewer/2022062407/56649da65503460f94a924c7/html5/thumbnails/3.jpg)
Stage II sleep. K-complex, with its typical characteristics: high amplitude, widespread, broad, diphasic slowtransient with overriding spindle. On the longitudinal montage (left), the K-complex appears to be generalized. However, the transverse montage clearly shows that the maximum (phase reversal) is at the midline (Fz and Cz).
![Page 4: Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and](https://reader035.vdocument.in/reader035/viewer/2022062407/56649da65503460f94a924c7/html5/thumbnails/4.jpg)
Stage II sleep. There is a mixture of spindles (bicentral short-lived rhythmic 14 Hz bursts) andPOSTS (positive occipital sharp transients of sleep). POSTS occur in stage I, but the presence of spindlesis “diagnostic” of stage II.
![Page 5: Stage II sleep. On this transverse montage, there is a K-complex in the fifth second, with its typical broad duration (>500 ms), diphasic morphology, and](https://reader035.vdocument.in/reader035/viewer/2022062407/56649da65503460f94a924c7/html5/thumbnails/5.jpg)
Stage II sleep. There is a mixture of spindles POSTS (positive occipital sharp transients of sleep),and spindles (fronto-central short-lived rhythmic 14 Hz bursts).