The direct electro-stimulation is the most exact an easy technique to determine both obvious areas (epileptics centers) and to localize cortical functional regions during a brain surgery. 
The electrostimulator BEIC  E-400 is specially designed for every kind of stimulation, cortical, deep, nervous and muscular,  because it has all kind of waves and a big capacity to choose in all the variables and it has also extreme security options by his PULSENSOR system.

ADVANTAGES OF SECURITY:

SAFE: The system controls in every moment that the moving pulses have to be the programmed ones and they will work according with the parameters choosed (PULSENSOR SYSTEM)
PULSENSOR SYSTEM: This system take measure of the value of the choosed pulse, and also of it shape, sending to the equipment an alarm condition, if a bigger pulse than the choosed one, is trying to circulate.

ALIMENTATION WITH INSIDE BATTERIES:
It keep the equipment totally insulated from the line (110-220V) and from the others equipments.
ELECTRICAL SECURITY: The equipment automatically insulate the area of the stimulation if it is connected to the line (110-220V) to charge the batteries, avoiding in this way the possible using while is connected to the alimentation line.

ADVANTAGES OF MANAGE:

EXTREMELY LIGHT AND COMPACT: Which permits also the transfer and the storing in every private cabinet.
VERSATILITY OF APPLICATIONS: The equipment has all kind of stimulation waves which are necessary for the different applications.
Direct biphasic 
Inverted biphasic 
Positive monophasic
EASY AND QUICK MANAGE: Trough it only four tab switch 
Selection of variable 
Increase variable 
Decrease variable 
Star/Stop
SIMULTANEOUS VIEW OF EVERY PROGRAMMED VARIABLES: DIRECT CHANGE OF THE VARIABLES: The variables can change directly by selecting and changing. It is not necessary to make commutations or measuring like in others equipments.
AMPLITUDE AND PRECISION IN ALL RANGE OF EVERY VARIABLES:
Amplitude 
Wide of the pulse 
Frequency 
Time of stimulation
The variables have an extended range (in comparison with others equipments) and they can be modified by little steps, which make the equipment very versatile and precise. 

GUARANTEE: Two years