Search PubMed⌕ Search

Biomedical subjects

J Massion

Publications and source records attributed to J Massion.

At least 91 records · Page 5Linked to original sources
PubMed1976

A device used for study of postural reactions in the quadruped.

A device used for study of postural reactions associated with placing movement in the quadruped is described. The apparatus consists of three basic components; a set of 4 strain gauge platforms on which the quadruped is trained to stand, a restraining device to keep the animal positioned over the strain gauge platforms and two mobile plates which mechanically stimulate the left or the right forelimb to produce the placing movement. The contact placing reaction consists of an early phase of preparatory positioning of the body (a postural adjustment) and a later phase of limb displacement, superimposed on a postural stance, during which the animal lifts its forepaw from the ground and then replaces it on top of one of the mobile plates.

Animals↗
PubMed1975

[Postural adjustment associated with cat movement].

The experiments were undertaken in order to investigate the relationship between movement and associated postural adjustment. Cats were accustomed to standing quietly in a restraining hammock. Each forelimb was supported by a tray equipped with strain gauge transducers in order to measure the postural forces exerted by the limbs. Flexion of one forelimb was elicited by stimulation of the motor cortex, the red nucleus or the superficial radial nerve. Unloading of the forelimb undergoing flesion was associated with loading of the other forelimb. The loading resulted from a postural adjustment which was elicited together with movement by the central or peripheral stimulation. Movement and postural adjustment are linked by a common central command.

Animals↗