Photos
Vectors
FOOTAGE
AUDIO
Support

Vector - Graph of the stages of sleep during an 8 hour sleep period, from awake, through stage 2 and REM sleep, down to stage 4

Graph of the stages of sleep during an 8 hour sleep period, from awake, through stage 2 and REM sleep, down to stage 4
Image ID : 30686518
Media Type : Vector
Copyright : Peter Lamb
3193 x 1556 px | 10.64 " x 5.19 " | 300dpi | JPG
Keywords