In the figure shown, the palatal plate (placed on a mould of the upper part of the mouth) with inductive coils and a silicone tube leading the wires out of the mouth. Right: The activation unit glued to the tongue
Their prototype Tongue drive system allows the disabled to manipulate wheelchairs by moving their tongue around their mouth, manage home appliances and control computers. The disabled have particularly high hopes that the tongue could prove the most effective.
The control system maps the motion of the user’s tonque to specific computer mouse or keyboard commands. The commands may be of left, right, forward, backward, single click and double clicks.
Compared to other control systems like tracking of eye movement are promising, they can be costly, slow and susceptible to mixed signals, this system is more cost effective and flexible.
The features of tongue control system are more flexible, sensitive and tireless option. And like other facial muscles, its functions tend to be spared in accidents that can paralyse most of the rest of the body, because the tongue is attached to the brain, not the spinal cord.