I have some very basic experience of EEG both as an experimenter and as an experimental subject for others. I abandoned  EEG as it was far too complicated for someone with my limited knowledge of brain physiology.

Typically, today in EEG,   32 to as much as 128 or even more electrodes are used. They require some dermal abrasion or exfoliation to be able to get signals. Do be aware that there could be noise interference.

While EEG is in a sense invasive, fMRI is not. I actually offered myself as an experimental subject at the my university's  cogntive neuroscience centre. You are put  on a  sort of stretcher, which is then moved into  a cylindrical space,  with the surrounding area made up of magnets. After the experiment you emerge with no physical sign of having undergone fMRI investigation.

I had suggested to a PhD candidate I was supervising  in his research into  emotions in service encounters to explore the use of fMRI but was  asking too much of someone with no knowledge of neurophysiology. So, perhaps in your case you can get some experts to interpret both EEG data and fMRI images if you feel you do not have the expertise in either of the areas.

The concensus of opinion is that EEG and fMRI complement each other, with EEG enabling the experimenter to detect electrical activity  just below the scalp, while fMRI gives a picture of blood oxygen level in tissues, including deeper tissues. I have  no knowledge of how blood oxygen level is influenced by decision-making or of decision-making influencing blood oxygen levels. You might want to look at this article:

Coan , J. A. , & Allen , J. J. B. (2003) . Frontal EEG asymmetry and the behavioral activation and inhibition systems . Psychophysiology , 40 , 106 – 114 . doi:10.1111/1469-8986.00011

Thanks a lot for your valuable insight Phil. I will read the paper that you suggest as soon as I get it.

I got some research about decision-making using fMRI but the problem in my case it is that there are no fMRI available to research in Venezuelan Universities but it is possible to rent EEG time from medical sources. That is the reason of my preference for using EEG.

Best wishes,

Manuel

Hello Mr Plasenica,

I want to follow up on my above comment.

One of the subjects I have been teaching is economics. But, I am a scientist/engineer at heart and so I have included experimental economics (sometimes also called behavioral economics, the latest development or offshoot of it being neuroeconomics) in my economics course in which my students participate in experiments  where real money is involved, often out of my own pocket, as the university thinks students should not gain from participation. Rather silly of  the person to whom I report.

In these variants of economics, there is a game called the ultimatum game wherein players or participants have to make decisions. To replicate the real world, decisions are made with real money being involved  -- participants  in the experiments are offered money and they have to make decisions and they get to keep the money they win or what is left of that if they lost. The measurement in the experiment involves  amongst other things, totaling  up  how much of money was kept or given way. But to get a better insight economists like Colin Camerer have relied on fMRI. But, these economists  having no knowledge of brain anatomy/physiology  have had to rely on  neurophysiologists. A neurophysiologist who has indeed worked with economists is Read Montague of the Baylor College of Medicine, in the USA.   It is OK for you to rely on others -- you are using a tool, so it is perfectly legitimate for you to invoke the help of experts with knowledge of  physiological tools/instruments such as EEG, ECoG**, ECG, fMRI, etc. I would urge you to use whichever tool(s) you can have access to. fMRI is easier to use than analyzing EEG signals –remember the number of electrodes that have to be placed on the scalp. These days they have caps which make for easier electrode placement.

I understand that you do not have  access to fMRI... why not contact Professor Camerer?  He is at the California Institute of Technology I am pretty sure he will have a listening ear for you. I  had a Brazilian girl as my student on the economics course -- she had previously finished a Master's degree in proteonomics in Brazil, and I heard from her that there are some very good research facilities  in Brazil. You might want  to try your luck in that country. But a  knowledge of Portuguese is required, I would think.

Today being Monday, I have been able to access my papers and to get you started on fMRI, here is a site that gives you a very quick introduction:

http://www.ndcn.ox.ac.uk/divisions/fmrib/what-is-fmri/mri-explained-1.

It is at Oxford University in the UK, one of the best universities in the world and the oldest in the UK.

To encourage you to pursue the fMRI route, -- I believe that it will prove useful--  I now provide these references and I hope very much you can gain access to them:

Breiter HC, Aharon I, Kahneman D, Dale A, Shizgal P (2001) . Functional imaging of neural responses to expectancy and experience of monetary gains and losses. Neuron 2001; 30:619-630

Thut G, Schultz W, Roelcke et al.(1997):  Activation of the human brain by monetary reward. Neuroreport 1997;8:1225-1228

Elliott R., Newman JL, Longe OA, Deakin JF (2003) . Differential response patterns in the striatum and orbito frontal cortex to financial reward in humans: a parametric functional  magnetic resonance imaging study. J Neurosci 2003;23: 303-307.

A quick read of the references will show that all the studies I cite above involve money!  And whether  we hold on to /save the money  or  spend the money it  is really  decision-making. I hope you will agree.

You will  recall that these days, researchers use both EEG and fMRI. These researchers  used EEG during fMRI scanning:

Babiloni, F., Mattia, D., Babiloni, C., Astolfi, L., Salinari, S., Basilisco, A., Rossini, P. M., Marciani, M. G., and Cincotti, F. (2004). Multimodal integration of EEG, MEG and fMRI data for thesolution of the neuroimage puzzle. Magn. Reson. Imaging 22, 1471–1476.

To close, I  come more or less full circle by referring you to the paper of Read Montague, which I have read and feel it provides a  very nice introduction to neuroeconomics/ neuroscience illustrated with good diagrams:

P Read Montague(2007)  Neuroeconomics: a view from neuroscience. Functional Neurology 2007; 22(4): 219-234.

I really hope the above is useful and that I have not be pushing you into the fMRI route…

Please feel free to contact me directly if I can be of help to you – so do feel free to contact me on my personal email address.

I would be pleased if you would update me on your progress, by writing to me. I shall provide you with more information later.

Best wishes.

** often used in surgical theatres – you are unlikely  to use this, I imagine

Functional MRI focuses on the characteristics of the blood supply to certain areas of the brain. By increasing the activity of cells of the brain blood flow in this region is enhanced. Electroencephalography to evaluate the relationship of different parts of the brain. Especially the relationship of the reticular formation of the brain and the neurons of the cerebral cortex. Thus, both methods complement each other.

Good, Christiane!

 Phil your second post is awesome about the amount and clarity of details and references. I will be very glad in exploring the new venues that you open to me about using fMRI because from the literature that I red before it is clear that fMRI are well established as a research tool in this endeavors. I will contact you by e-mail as soon you give it to me because I can't get on your Research Gate profile. In any case my e-mail address is [email protected] if you write me an e-mail I will add you to my contact and keep you informed and involved.

Many thanks and best wishes!

Manuel

Dear Christiane I like a lot your post and I am very sorry that Research Gate prevents me to up vote your answer multiple times then I appreciate a lot the up vote that Valdimir give to you answer. I will try to get all the references that you gave to me and I will keep you in touch because your knowledge and disposition, as well as Phil's, are very valuable to me.

Thanks a lot!

Dear Vladimir I appreciate so much your participation in this thread. I am also very satisfied about the opportunities that Research Gate give to all us in order to personal and academic growing as well as support each other in a very flat scenario where novel researchers as my self could get valuable insights from people as important as You.

Dear Ondrej besides the great contribution in terms of knowledge your post is very motivating. I appreciate it so much. 

If it is that you are looking for EEG research on System 1 and System 2, here are some resources.

This is a review of a handful of ERP studies:

Chapter Comparing dual process theories: Evidence from event-related...

Couple newer ERP studies (since the review)

Article Fast and Slow Thinking: Electrophysiological evidence for ea...

Article Event-related potentials support a Dual process account of t...

Frequency Analysis Study:

Article Thinking theta and alpha: Mechanisms of intuitive and analyt...

Cheers,

Chad.

YOU CAN DO IT THROUGH VIDEO GAMES. YOU CAN MAKE THE USER TO PLAY VIDEO GAMES AND THEN COLLECT THE DATA THROUGH