Hummingbird Feeders. Hummingbirds get the energy they need to maintain their astonishing metabolism primarily from flower nectar and the sugar water they find at feeders (here's the recipe). Think of them as miniature flycatchers, and sugar is just the fuel for getting their real nourishment.
afÂ·terÂ·imÂ·age. n. A visual image that persists after the visual stimulus causing it has ceased to act. Also called photogene. (ËÉËftÉrËÉªmÉªdÊ).
Videoonystagmography (VNG) Videonystagmography (VNG) is used to evaluate patients with dizziness, vertigo, or balance dysfunction. The inner ear and eyes movements are connected through the vestibulo-ocular reflex. The vestibular system monitors the position and movements of the head in order to stabilize retinal images on the eye.