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Current Affairs

Brain-computer interface for stroke patients

Date: 21 August 2019 Tags: IT, Mobile & Computers

Issue

 

IIT Palakkad researchers have found a way to improve the functioning of the brain-computer interface when used by stroke patients.

 

Background

 

Stroke is a disease that affects the arteries leading to and within the brain. It is one of the major cause of death and a leading cause of disability.

A stroke occurs when a blood vessel that carries oxygen and nutrients to the brain is either blocked by a clot or bursts.

 

Importance of Discovery

  • Stroke patients undergo a passive rehabilitation therapy where the patient plays a passive role while the physiotherapist actively helps by moving the patient’s paralyzed limb.
  •  Development of the motor imagery brain-computer interface can help develop an active rehabilitation therapy where the patient can move his limb according to his own movement intention.

Drawbacks

  • Communication certainly improves as the number of channels electrodes attached to the brain region is increased. But the drawback is that increasing the channels makes computation more complex, increases preparation time and is inconvenient for the person.

Details

 

Researchers have used a trained neural network, with inputs from neuroscience, to develop a new channel-selection method that makes the process more efficient and effective. The method employed is more efficient and works in most of the cases.