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Are brain waves electromagnetic waves?

Short answer Brain waves are not electromagnetic waves. Long answer Measured brain activity, as you already mentioned, is the result of individual neurons firing. The activity exists, in fact, of two ...
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13 votes
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What tools are available for EEG analysis on the R platform?

Antoine Tremblay has just released an advanced analysis toolbox: http://onlinelibrary.wiley.com/doi/10.1111/psyp.12299/abstract It's missing about half the features on your list, although ...
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12 votes

Is EEG brain-computer interface reliable?

This very much depends on what, exactly, you're trying to do. EEG measurements tend to be extremely reliable, but the inferences one may draw on mental state are not necessarily so. EEG-driven BCI ...
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12 votes
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Removing ocular artifacts from EEG signals

In short: we know that eye-blinks are reflected frontally in the EEG data and we use that knowledge to identify which components reflect for example eye-blinks. It would not make sense to identify a ...
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12 votes
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Is there a way to make a DIY EEG?

The OpenEEG project has some information for building your own EEG system. Instructables has a "simple" EEG circuit you can build. Note that this is going to be somewhat costly and time consuming ...
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11 votes
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What happens in your brain when you see a dinosaur in this stenographic image?

The source I have quoted below gives an example of the following stenographic image:- Is this perception a particular trick that my eye performs or is it processing the visual data in an alternative ...
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11 votes

Are brain waves electromagnetic waves?

Short answer Brainwaves are typically associated with the electroencephalogram, which is a signal mainly composed of potential differences generated in the superficial layers of the brain. Potential ...
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10 votes

What do brain waves look like under the influence of psilocybin?

Best start here: The entropic brain: a theory of conscious states informed by neuroimaging research with psychedelic drugs (2014). And then here is some more current literature worth exploring: Neural ...
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9 votes

Are brain waves electromagnetic waves?

If "brain waves" produce a time-varying electric potential as shown on the EEG, then as far as I know electromagnetic waves are present. I was taught that you cannot have a time varying electric ...
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8 votes
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What are proper EEG frequency bands and electrode placements for imagined speech?

A study by D’Zmura et al. (2009) in which two syllables were spoken in imagination showed that imagined speech information was present in EEG alpha, beta and theta bands. The beta band (13-18 Hz) ...
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8 votes
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Physiology behind EEG measurements

EEG research all started with Hans Berger, who in 1929 reported that brain activity could be recorded by measuring electrical activity on the scalp. Although the notion of ‘brain waves’ that were ...
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7 votes

How to compare brain waves?

The field of study you should focus on is the one for which you have already identified in your paragraph above which is EEG based "brain-computer interface". EEG signals are compared by ...
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7 votes

Is it possible to detect the mental flow state with EEG?

Bearing in mind the fact that I can't prove a negative, I'm going to say "No, it's not (yet) possible". Flow is rather loosely defined (e.g. "merging of action and awareness"), so coming up with hard ...
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7 votes

How does glial cell activity influence fMRI, EEG signals?

I'm only going to attempt to answer a small part of your question: how does glial activation affect the blood oxygen level-dependent (BOLD) response measured by fMRI? Schulz et al. (2012) were able ...
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7 votes
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How is the signal-to-noise ratio of an event-related-potential measured?

Based on your comments I interpret your question as: "(1) What is the definition of the signal-to-noise-ratio (SNR) and (2) how do I determine the SNR for event-related potential (ERP) amplitudes in ...
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7 votes
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Why is the order of brainwaves not labelled "alphabetically"?

They are ordered based on when they were discovered/named (as pointed about by Ana's comment). Alpha and beta waves were among the first signals observed in EEG data. From Wikipedia: Alpha waves ...
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7 votes
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Do alpha waves vanish when I open my eyes in a dark room?

Yes they do. That is to say, light conditions do not generally affect alpha waves, only the eyelids do (and other factors). This has led to alpha waves being interpreted as reflecting an active ...
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6 votes

Are recent affordable EEG devices any good?

The Emotiv system has been evaluated in a research setting. Badcock et al. (2013) recorded EEG activity with the Emotiv EPOC and a more conventional laboratory system simultaneously, and found that ...
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6 votes
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Mapping Sustained Attention on the brain (EEG)

You should consider using subject-specific alpha channels and frequency ranges. There are differences between individuals in alpha peak frequency. Also the placement of the EEG cap as well as small ...
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5 votes
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Can a person control their brain's electrical activity?

Yes, and no. Biofeedback has been an active field of research since the 70s, but has been a bit "fringified" as a cure for ADHD, etc. It is possible to fine tune the brain activity for specific ...
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5 votes

Getting started with EEG data

If you are considering an alternative to matlab that is free I would recommend octave. If you are on linux you might consider the whole neurodebian. In terms of book I did not find Steve Luck's book ...
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5 votes
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Can fMRI and EEG signals be generated from NEF models?

Replicating fMRI signal was first used in the Tower of Hanoi task as seen in section 5.8 of "How to Build a Brain": There is strong evidence that dendritic processing, driven by neurotransmitter ...
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5 votes

Are there any EEG procedures currently available/in development that can formulate letters/words from deliberate, internal monologue?

What you are looking for is Imagined / Silent Speech Classification (my best guess). I'm interested in this for a few years (exactly to work with Vim) now and worked with some of the cheap EEG ...
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5 votes

How do I obtain recordings of the P300 wave of the event-related potential in the EEG?

The P300 wave is a positive deflection in the human event-related potential (ERP). A common experiment in which it is analyzed is the "oddball" paradigm, where a subject detects an occasional target ...
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5 votes

Does stimulus-independent ERP make sense/ exist?

An ERP is an Event Related Potential, making it inherently connected to an event. Having stimulus/response independent ERPs is thus impossible. There do exist potentials that seem to be stimulus ...
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4 votes

Is there any file format standard for EEG data?

As far as I know, short answer is no - there is no gold standard for EEG files. But EEG is a time series (amplitude) from several channels. So the most common way to represent it is columns as ...
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4 votes

Cost of EEG devices suitable for neurolinguistic research

An old question, but there has been some recent developments by third-parties and now cheaper and hopefully just-as-accurate EEGs exist. From Are recent affordable EEG devices any good? we see the ...
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4 votes
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Are there useful applications for three channel consumer EEG?

Point by point: The Melon headband has three electrodes. Our primary electrode is on the forehead region known as FP1, where Melon can monitor brainwave activity from the prefrontal cortex. The ...
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4 votes
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How to filter noise in EEG data

Removal of noise can be done in various ways: Conventional filters: You could create a digital low-pass filter, such as a Chebyshev or Butterworth filter with a cut-off frequency at 30 Hz (filt or ...
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