The Dynamic Plantar Aesthesiometer has been designed to automate the assessment of “touch sensitivity” on the plantar surface of rats or mice and comes ready to work with both Mice and Rats. It is known by some as the Electronic Von Frey or Plantar Von Frey instrument, but differently from Von Frey devices, Latency time, and Actual Force at the time of paw withdrawal reflex are recorded.
A moveable force actuator is positioned below the plantar surface of the paw and the desired force and force speed (ramp) is applied. A Von Frey – type 0.5 mm filament exerts increasing force, until the animal twitches its paw.The new model encompasses:- a movable touch-stimulator unit, well proven in previous model, complete with filament actuator and adjustable angled-mirror- a microprocessor controlled electronic unit, of new design provided with graphic display, internal memory for data storage, memory stick and optional printer- a large testing surface- a new modular animal enclosure, offering from 3 to 12 spacesData may be easily ported to a memory stick or directly to computer.Perforated Metal Platform and multi-configuration animal enclosure, from 3 - 12 chambers, are included.
The force is automatically applied
Consistency in force application, rate and direction
The user only has to press a button
The test is quicker and less tedious than VF hairs
Force threshold and ramp can be preset
More parameters to fit with virtually any experimental need
via keys on the touch-stimulator vessel
0 to 50.0 grams, in 0.5 g steps
Force increasing rate:
adjustable in the interval 1 to 20 seconds, in 1 s steps