A mind reading thinking cap has arrived!

Researchers are developing a commercial version of the device as an aid for paralysed patients.

Researchers have come a step closer to developing a device that will enable people to write and manipulate objects by reading their mind.

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Signals from the brain are measured by 128 electrodes affixed to the subject's scalp, similar to an electroencephalogram (EEG). With the help of a software programme, specific signals are picked out among the nebulous mass of information.

The device could provide a way for paralysed patients to operate computers, or for amputees to operate electronically controlled artificial limbs. But it also has non-medical applications, such as in the computer games and entertainment industries.

The German researchers hope to develop a commercial version of the device as an aid for paralysed patients and amputees.

The brain-computer interfaces could have a range of uses beyond the medical. "Signals from the brain give you a fraction of a second advantage," NewScientists quoted John Chapin, an expert as saying.

The device could make a novel game controller and be used in other ways. The researchers have even begun testing the machine as a driving aid, as it can sense a sudden reaction and control a vehicle's brakes before even the driver can.

Scientists are now developing a cap that won't have to be attached directly to the scalp making it easier to use and cause less skin irritation for the wearer.