Jumping reaction
The Hüpfreaktion (engl. Hopping reaction ) is a neurological test in veterinary medicine . It belongs to the so-called posture and position reactions .
execution
During the hopping reaction, the animal is lifted, the entire weight of the animal is transferred to the leg to be tested, and the animal is moved forwards and sideways. In the case of heavy animals, only one limb is lifted and the animal pushed aside.
If the reaction is undisturbed, the animal performs a hopping motion with the limb in order to get it back under the center of gravity .
Diagnostic value
A large number of functions and almost all sections of the central nervous system are required in this test .
If the answer is delayed, the damage is primarily to be found in the area of proprioception (ascending spinal cord tract ). If the limb is put on incorrectly, motor disorders ( paresis ) are the cause. If the correction is too low ( hypometry ), there may be damage to the cerebrum , brain stem or spinal cord. If the jump is too large ( hypermetry ), the damage is mainly in the cerebellum .
Hopping inwards is more difficult and is therefore suitable for uncovering minor disturbances.
literature
- André Jaggy: Atlas and textbook of small animal neurology . Schlütersche, Hannover 2005, ISBN 3-87706-739-5 .
- Marc Vandevelde among others: Veterinary neurology. A guide for study and practice. 2nd revised and expanded edition. Paul Parey Verlag, Berlin 2001, ISBN 3-8263-3224-5 .