Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

EEG signal analysis preprocessing

Status
Not open for further replies.

sadatwins

Junior Member level 2
Joined
Apr 24, 2010
Messages
20
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
jordan
Activity points
1,414
hello
i was if it is possible that you can help me in my project i was planning to make a device that is controlled using BCI
but i am stuck with the analysis and i have a few questions that i would like to ask?
i was implement this paper "CLASSIFICATION OF MENTAL TASKS FROM EEG SIGNALS
USING EXTREME LEARNING MACHINE"

1)The EEG signals are first normalized with zero mean and variance one,and then divided into half-second segments with an overlap of one-quarter-second between adjacent segments.
about the above why i should normalize ?and how can i ?what am i normalizing
2)is there some book that can help me in the analysis or any other reference
 

BradtheRad

Super Moderator
Staff member
Joined
Apr 1, 2011
Messages
13,889
Helped
2,755
Reputation
5,508
Reaction score
2,664
Trophy points
1,393
Location
Minneapolis, Minnesota, USA
Activity points
103,629
In digital audio terminology, to normalize means to remove DC component. What remains is AC data, centered around a zero reference.

It's done because electronic components handling AC signals are not necessarily adjusted to be free of DC offset.
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top