Ugo Basile Electronic Von Frey


The Ugo Basile Electronic von Frey instrument provides automated assessment of theshold to mechanical stimuli in mice and rats. Mechanical allodynia and hypersensitivity is assessed by stimulating the plantar surface of the animal’s hindpaw and latency to paw withdrawal is recorded automatically. Instrument includes an electronic unit, touch stimulator and software used to compare applied force with desired target force.

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Ugo Basile’s Electronic Von Frey, the E-VF, is designed for applying light touch to the rodent foot and provides an assessment of hypersensitivity and allodynia in rats and mice. The 57814 automatically records the animal response to the user-controlled application of force rate.

A touch stimulator transducer is mounted on a Perspex handle, so that routine procedure may be employed to examine and test the animal skin sensitivity. A prism of the original design is of great help to localize the aimed stimulation area

The completion of each test may be indicated either by the sudden withdrawal of the paw or by pressing the external foot pedal. The display then gives the operator a summary of the results of the test (i.e. force and time corresponding to the animal response).

The rate of application of the force is set by the operator and the e-VF includes software tools that help the operator inconsistently apply the force at the desired rate. The results of several hundred tests may be stored in the e-VF for transfer to a PC!

The instrument includes:

  • an electronic unit
  • the touch stimulator with the prism of the original design
  • the software

The e-VF can be completed with the 57816 Base assembly for plantar stimulation.

Force Ranges 0-50gf,  0-200gf,  0-1000gf
Force Increasing Rate Monitored via e-VF Electronic Unit or via the DCA3 Software on the PC
Force Response in 0.1gf steps
Latency Time in 0.1s steps
Start Automatic when force applies to the instrument
Stop Automatic or by pedal
Connection to PC via USB cable (A to mini-B) and e-VF Software (DCA3)
Power Requirement Either battery operated, via USB cable connected to PC, included power supply (100-240 VAC, 50-60Hz)

Additional information

Weight N/A
Dimensions N/A

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