• Abhishek S. Kadam
• Apoorva S. Jadhav

Brain Computer Interfaces or BCI’s are a type of human-machine interfaces which allow us to interpret the electrical activity taking place between the dense interconnected clusters of neurons or brain cells. Although it is extremely difficult for us to detect a single neuron’s impulsive activity, we can easily collect signals arising from result of thousands of neurons firing in synchronization. The human brain and a computer can thus communicate using this new medium. It acquires signals from the human brain, processes and transforms them into machine instructions in order to do specific actions. Not only the visually impaired but also patients suffering from neurodegenerative disorders like amyotrophic lateral sclerosis (ALS), Alzheimer's disease, Huntington's disease and Parkinson's disease can be benefited if their eyes could become another way of communication instead of just visionary aids. The goal of this paper is to throw light on some of the notable interactive systems based on EEG (electroencephalogram) focusing mainly on virtual keyboards and spelling devices.

Brain Computer interface, EEG, ALS (Amyotrophic lateral sclerosis), Parkinson's disease, Huntington's disease, motor neuron, virtual keyboard.

"Eye Blink Spelling Device as a Brain Computing Interface Using EEG ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.44-50, May-2019, Available :http://www.jetir.org/papers/JETIRBO06007.pdf

"Eye Blink Spelling Device as a Brain Computing Interface Using EEG ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp44-50, May-2019, Available at : http://www.jetir.org/papers/JETIRBO06007.pdf