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The headboard is a piece of furniture that attaches to the head of a bed. Historically used to isolate sleepers from cold, modern use is chiefly for aesthetics or for functional uses. Historically used to isolate sleepers from cold, modern use is chiefly for aesthetics or for functional uses.
NREM Stage 1 (N1 – light sleep, somnolence, drowsy sleep – 5–10% of total sleep in adults): This is a stage of sleep that usually occurs between sleep and wakefulness, and sometimes occurs between periods of deeper sleep and periods of REM. The muscles are active, and the eyes roll slowly, opening and closing moderately.
Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. During sleep, there is a marked ...
Beds may have a headboard for resting against, and may have side rails and footboards. "Headboard only" beds may incorporate a "dust ruffle", "bed skirt", or "valance sheet" to hide the bed frame. To support the head, a pillow made of a soft, padded material is usually placed on the top of the mattress.
Headboard: The solid or upholstered focal point of a bed attached at or to the head of the bed. [9] Platform: A boxed base for a mattress, sometimes a box spring and mattress. [9] Risers: Extensions made to raise a bed frame to add height to the bed. [9] Side rails: The support rails that anchor the headboard of the bed to the footboard. [9]
Hori et al. regard sleep onset hypnagogia as a state distinct from both wakefulness and sleep with unique electrophysiological, behavioral and subjective characteristics, [10] [12] while Germaine et al. have demonstrated a resemblance between the EEG power spectra of spontaneously occurring hypnagogic images, on the one hand, and those of both ...