Multi - Channel Das of EEG by Using LabVIEW

Authors

B.RAJESH, Research Associate,

Y.N.HARIKA, Research Associate,

K.SUDHARANI, Associate Professor,

Abstract

Electroencephalogram (EEG) is a device that amplifies and displays brain electrical potentials. Every EEG consists of brain bio-potential amplifiers, digitalization (conversion of analog signal to ones and zeros – binary numbers) and displaying of data.

The electroencephalograph (EEG) monitors the brainwave activity from sensors placed on the scalp. Applications for EEG feedback are currently being developed. It is a painless, non-invasive procedure that might be helpful in the management of a large variety of disorders. These include epilepsy, hyperactivity and attention deficit disorder, alcohol / chemical dependency and other addictive disorders, traumatic brain injury, sleep onset disorders and insomnia. The detection and classification of EEG waveforms by visually screening the EEG record is a rather complex operation. For this purpose we are developing a multi-channel EEG (electroencephalogram) acquisition and signals are displayed using LabVIEW.. The system includes an EEG signal conditioning unit and a PC with LabVIEW software installed. The former is composed of pre-amplifiers, filters, and gain amplifiers and the later a DAQ card connected to PC installed with NI-LabVIEW.