Brain computer interface

BRAIN COMPUTER INTERFACE CONTROLLING COMPUTERS BY THOUGHTS BY M. ANIL KUMAR VIGNAN’S ENGINEERING COLLEGE VADLAMUDI,GUNTUR.

BCI MEANS…? ,[object Object],[object Object]

Introduction: ,[object Object],[object Object],[object Object]

History: ,[object Object],[object Object]

Continuous Brain Waves ,[object Object],Type Frequency Location Use Delta <4 Hz everywhere occur during sleep, coma Theta 4-7 Hz temporal and parietal correlated with emotional stress (frustration & disappointment) Alpha 8-12 Hz occipital and parietal reduce amplitude with sensory stimulation or mental imagery Beta 12-36 Hz parietal and frontal can increase amplitude during intense mental activity Mu 9-11 Hz frontal (motor cortex) diminishes with movement or intention of movement Lambda sharp, jagged occipital correlated with visual attention Vertex higher incidence in patients with epilepsy or encephalopathy

Methods of extracting signals from brain: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Signal acquisition – invasive: .

Real-time fMRI Signal acquisition – non-invasive: EEG, MEG, fMRI real-time EEG real-time MEG

Research activities: Monkey- Robot arm They implanted multiple electrodes spread over a greater area of the monkey brain to obtain neuronal signals to drive a BCI.

Honda, Brain-Machine Interface Technology Enabling Control of a Robot by Human Thought Alone: ,[object Object],[object Object]

CONSUMER-DEVICES OF BRAIN-COMPUTER INTERFACES Neural Impulse Actuator(NIA): ,[object Object],[object Object]

[object Object],[object Object],NeuroSky MindSet:

Future developments ,[object Object],[object Object],[object Object],[object Object],[object Object]

References: : ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Brain computer interface

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Brain computer interface