A Review on Signal Pre-processing Techniques in Brain Computer Interface  
  Authors : Abhijeet Mallick; Deepak Kapgate

 

Brain-computer interfaces (BCI) are systems that make use of brain activity (as reflected by electric, magnetic, or metabolic signals) to control external devices such as computers, switches, wheelchairs, or neuroprosthetic extensions. The success of this methodology depends on the selection of methods to process the brain signals. Before processing BCI signals, there would be several things to be done to preprocess the data to isolate and sanitize the signals. This helps to eliminate the unimportant signals from the needed signal by expressing lobe signal as variations from the overall EEG activity. In this paper we present the commonly used Pre-processing algorithm and their description of properties for the Brain Computer Interface. The motive behind this review paper is to provide the merits and demerits of the algorithm and to provide guideline to the researchers in these fields. The various techniques for signal enhancement or preprocessing, feature extraction and classification are discussed, but the review mainly focused on signals preprocessing.

 

Published In : IJCAT Journal Volume 2, Issue 4

Date of Publication : April 2015

Pages : 130 - 134

Figures :01

Tables : 01

Publication Link :A Review on Signal Pre-processing Techniques in Brain Computer Interface

 

 

 

Abhijeet Mallick : Department of Computer Science & Engineering, G.H.R.A.E.T, Nagpur University, India

Deepak Kapgate : Department of Computer Science & Engineering, G.H.R.A.E.T, Nagpur University, India

 

 

 

 

 

 

 

Brain Computer Interface (BCI)

Electroencephalogram (EEG)

Brain Machine Interface (BMI)

A brain computer interface (BCI) is a communications system that enables humans to control various devices by using control signals generated from electroencephalographic (EEG) activity. The signal processing components of a BCI design: (1) signal acquisition, (2) signal pre-processing, (3) feature extraction, (4) feature classification and (5) control interface. The acquired signals may suffer from noise and artifacts because of movement of subjects. But no one give any special attention toward this signal pre-processing process. This paper mostly concentrated on the Preprocessing. Pre-processing algorithms are one of the most primary factors to decide accuracy and to obtain optimal results of BCI system. In this paper, we summarize various signal pre-processing methods and also their advantages and disadvantages.

 

 

 

 

 

 

 

 

 

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