How do hoverflies use their righting reflex?

Abnormal air-righting reflex in striatal rats.

To understand dynamic postural control of the higher brain, we compared air-righting reflexes in various decerebrate rats. Post-operative 3-5 d thalamic and mesencephalic rats displayed almost similar righting movements as intact. However, in striatal animals, coordination of righting movements was disrupted. The higher brain without cortical control could interfere with the brainstem center of...

How do bilinguals control their use of languages?

Dissociated vertical divergence: a righting reflex gone wrong.

Dissociated vertical divergence (DVD) is an ocular motor disorder characterized by a slow, upward drift of 1 eye when the other eye is fixating a target. I propose that DVD is a dorsal light reflex in which asymmetrical visual input to the 2 eyes evokes a vertical divergence movement of the eyes. This primitive visuo-vestibular reflex functions as a righting response to restore vertical orienta...

Stereoselective loss of righting reflex in rats by isoflurane.

BACKGROUND Although it is accepted widely that optically active intravenous general anesthetics produce stereoselective effects in animals, the situation regarding volatile agents is confused. Conventional studies with scarce isoflurane enantiomers have been limited to small numbers of animals and produced conflicting results. By injecting these volatile enantiomers intravenously, however, it i...

The labyrinthine posture reflex (righting reflex) in the cat during weightlessness.

LTHOUGH it is generally accepted that linear acceleration is the physical stimulus for the otolith organ, its function during periods of increased and decreased gravity has not been ~ l a r i f i e d . ~ , ~ J ~ In 1952, SlaterlG discussed the probable response of the otoliths to the weightless condition by drawing some tentative conclusion from morphologic data and electrophysiologic experimen...