Electroencephalography (EEG) is the recording of the brain's spontaneous electrical activity electrical activity from multiple electrodes placed on the scalp.

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779 views

Is there a better way to describe brain activity than EEG “brain waves”

I've been reading about EEG brain waves, which are specific waveforms that are observed on the EEG output, and are usually scored by humans. This concept has been around for quite some time. Is there ...
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3answers
3k views

What is the standard way to analyze EEG data in a mismatch negativity paradigm?

I'm running an EEG experiment using a modified auditory mismatch negativity (MMN) design, and I'm wondering if anyone can tell me the best method for data analysis (and recommend any stats ...
10
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1answer
151 views

What happens in your brain when you see a dinosaur in this stenographic image?

You might have come across stereographic Images like the one shown below (found here): What happens in your brain when you observe the dinosaur? (as you put your face on the image by touching your ...
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334 views

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

I am thinking of the combination of an EEG-like device and software to monitor and analyze (very) deliberate thoughts of letters/words. The input would be in the form of raw electrical brain ...
9
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1answer
207 views

How does glial cell activity influence fMRI, EEG signals?

Glial cells comprise about 80% of the cells in the human brain. But physiological models of EEG and fMRI often relate only to neuronal activity. How do glial cells affect large-scale imaging ...
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57 views

Is there a way to make a DIY EEG?

I have MATLAB. I would like to try out a small EEG project because my field of interest is in neuroscience, however I'm still doing my undergrad.
8
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374 views

What computerized EEG analysis algorithms are there?

I got a commercial-grade EEG headband and am trying to look at the data it outputs. The headband quantifies raw EEG signal from a single forehead dry sensor into a range of EEG bands (alpha, beta, ...
8
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1answer
334 views

Do alpha waves vanish when I open my eyes in a dark room?

Alpha brain waves show up in your EEG when you close your eyes. Do they vanish when I open my eyes in a dark room? To put it in a different way: Is it necessary to have your eyes shut or that you ...
8
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1answer
101 views

Is there a metric of the overall excitation of the brain or nervous system?

I'm thinking of a way to describe what's happening to a single channel EEG/MEG sensor output. I've noticed that there is significant difference in the readings from a quiet observations, versus a ...
8
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1answer
122 views

Is there a report of a successfully EEG-Based Brain-Computer Interface (BCI) using image training?

Currently I am involved in constructing an EEG-Based BCI. The goal of the BCI is to control which light in a series of lightbulbs lights up. The plan is to use different images (i.e. a flower versus ...
7
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1answer
2k views

What tools are available for EEG analysis on the R platform?

I'm starting some EEG studies on attention, and would really like to use R for preprocessing (filtering/artifact rejection), visualization, and analysis, but I can find very little in the way of ...
7
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1answer
146 views

Significant baseline, Oddball paradigm

I recently conducted an EEG experiment using a passive Oddball paradigm with two experimental conditions : standard stimuli (occurring with a 85% probability) and deviant stimuli (occurring with a 15% ...
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110 views

How does the alpha brain wave frequency range distribute over the population?

Alpha brain waves show up in your EEG when you close your eyes. Alpha waves are brain waves between 8 and 13 Hz. How does this frequency range distribute over a population of people?
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2answers
365 views

EEG correlates of handedness

Can any one suggest a good article about features of EEG of left-handed people? I was surprised when find that there are only few old articles about it. I find only one new article by Propper, Ruth ...
7
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1answer
163 views

Phase locking value (PLV) between $x(t)$ and $x(t-T)$

I have been trying to calculate PLV using the hilbert transform (reference). To test if it even works or not, I calculated PLV between $x(t)$ and $x(t-T)$. i find that it drops to zero very quickly as ...
6
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1answer
176 views

Removing ocular artifacts from EEG signals

I have read the following paper , which is try to remove EOG artifacts from EEG signal , the authors give the following figure . The authors claim that components 1 and 2 represent ...
6
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1answer
161 views

What are proper EEG frequency bands and electrode placements for imagined speech?

I am doing an EEG experiment about imagined speech recognition. Which frequencies will have the most relevant information? I chose the frequency band [4-40] Hz as a start, mainly because of signal ...
6
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1answer
187 views

Intro to EEG - Electroencephalography [duplicate]

Are there any introductory level text, researches or video for "How to learn EEG"? Those material should include dictionary of terms, what waves mean, how to connect some activity in waves to brain ...
6
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1answer
70 views

What are some good references for preprocessing and analysis of the P300 response from EEG data in Python?

I have just started to work on problems in neuroscience on my own. I sought to analyze the P300 response from EEG data because I was trying to understand a Kaggle.com challenge that used it. I found ...
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2answers
216 views

How can surprise be labelled conscious when mismatch negativity shows that surprise takes place earlier than conscious states?

Mismatch negativity (MMN) is the brain response to violations of a rule. The MMN peaks at about 100–250 ms after change onset. If MMN occurs so early, before conscious perception, why is surprise ...
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2answers
1k views

Devices that detect when someone is falling asleep

I'm wondering what types of devices exist that can detect how close someone is to falling asleep. I have heard of several devices that may be able to do this, but I haven't been able to find very ...
5
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2answers
50 views

Component naming of MEG vs. EEG

My question is why we use P and N for naming positive and negative EEG component(for instance N170 or P100) but for MEG data we use M in both case, I mean M170 and M100 in this example?
5
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1answer
357 views

How is the signal-to-noise ratio of an event-related-potential measured?

I often encounter publications where the authors try to "increase the SNR (signal-to-noise ratio) of electroencephalogram (EEG) signals". Some define a numeric value of SNR of EEG signals, but I am ...
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218 views

Are there useful applications for three channel consumer EEG?

I stumbled upon the consumer EEG Melon (at Kickstarter). It has three electrodes and is advertised as measuring how "focused" you are. In the FAQ it says: The Melon headband has three electrodes. ...
5
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1answer
178 views

Can tinnitus be measured with EEG or MEG?

Can tinnitus be measured with EEG or MEG (magnetoencephalography)? Is it visible in a power spectrum? In an ERP/ERF?
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100 views

Suggestion for wearable EEG headset

We need wearable EEG headset with raw data output accessible from various platforms. I heard that devices like that have commonly the output encoded and available adapters are designed for one or just ...
5
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1answer
49 views

Database of EEG signal phenomenon

I'm working on a paper describing the current state of EEG headsets used as computer interfaces. One of the things that is key for building a system using an EEG headset as a controller is having some ...
5
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1answer
86 views

Neurophysiological indications of focus and motivation

Is there any way to detect a subject being focused or highly motivated (assuming that these two states are essentially the same) using any sort of external detection, such as fMRI or EEG? How would ...
5
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1answer
56 views

Dependency EEG signals from regions of the brain

When we record an EEG signals, we apply an ICA on it. This algorithm assumes that the sources of signals are independent. Could I assume that each region in the brain works independently, i.e., the ...
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1answer
25 views

Insensitivity of MEG to inhomogeneous conductivity

Why MEG is not sensitive to inhomogeneous conductivity profile of different brain compartments (scalp,skull and brain) but EEG is sensitive to that?
5
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2answers
219 views

Measurement of phase difference between two signals using cross correlation vs. fourier transform

I am studying eeg signals with the aim of distinguishing between preictal and interictal epilepsy states based on the eeg signal. I have read some papers and one of the metrics used to distinguish ...
5
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0answers
142 views

What cognitively interesting event-related potentials at FP1, FP2, TP9 or TP10 can be measured with consumer-grade EEG hardware?

I'm looking for cognitively interesting event-related potentials at places like FP1, FP2, TP9 or TP10 that can be measured with consumer-grade EEG hardware. Right now I have an Interaxon Muse EEG and ...
5
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0answers
54 views

How to compute auditory steady state responses?

Simple question: How does one usually go about computing an auditory steady state response (ASSR)? I have data where speech was amplitude modulated to a 40 Hz sine tone. There's 3.5 minutes of data; ...
4
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1answer
76 views

Why is the order of brainwaves not labelled “alphabetically”?

The brainwave - frequency breakdown is as follows: Delta wave – (0.1 – 3 Hz) Theta wave – (4 – 7 Hz) Alpha wave – (8 – 15 Hz) Mu wave – (7.5 – 12.5 Hz) SMR wave – (12.5 – 15.5 Hz) Beta wave – (16 – ...
4
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1answer
120 views

Are recent affordable EEG devices any good?

I'm looking to do some research about flow and optimal experience with EEG. I don't have access to a lab and I was wondering if the new devices that are available to the public (i.e. Melon, Muse, ...
4
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1answer
29 views

EEG Signal quality

I'm a EEG hobbyist using Olimex EEG SMT, and I'm using 4 dry, active electrodes to record EEG signals (the Olimex uses bipolar montage, so I actually have 2 channels). However, I cannot measure any ...
4
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1answer
51 views

In what order do you preprocess EEG data?

I am fairly new to EEG research and I am unsure what the best ordering is for preprocessing data. Do you correct for baseline and filter the data before you go on with artifact rejection/correction, ...
4
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1answer
190 views

Applications and Limitations of EEG Electrode Pooling - Averaging across time series

Is there any literature that has addressed electrode pooling? In particular, are there any standards concerning what pools (e.g. frontal, central, posterior vs. electrode pairs) could be used or any ...
4
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1answer
57 views

EEG Alpha waves during eyes open mindfulness training - any research on this subject

I recently conducted an experiment recording EEG during an eyes open mindfulness meditation. I saw a substantial amount of alpha bursts throughout the meditation both in the occipital and frontal ...
4
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0answers
30 views

EEG data processing: large data file seems empty

We have been running an experiment trying to collect ABR data using the Brainvision EP-PreAmp and Actichamp system. We ran several successful tests with short versions of our experiment, about 10-15 ...
4
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59 views

Continuous Basic EEG analysis [closed]

So, I have continuous EEG data from a control group and a test group. The recording was done while the participants were at rest, so no task was performed. I want to start with some basic analysis, ...
4
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0answers
32 views

Effectiveness of implicit measures of deception (e.g., sweating, eye focus, EEG) when filling out online questionnaire

I'm working in my master thesis on a method of detecting user deception or lying when answering online questionnaires using his implicit feedback like sweating, eye focus, EEG etc. I would like if ...
3
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2answers
207 views

Cost of EEG devices suitable for neurolinguistic research

What is the cost of an EEG device (electrodes and other indispensable hardware, software if available for standard office computers, or a whole package with a dedicated computer and software) that is ...
3
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1answer
129 views

How to structure affective picture stimuli for an EEG study?

I want to design an EEG paradigm for passive affective picture viewing. Can I use a block design for three different emotions, where each block represent a particular emotion? Or would a better design ...
3
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1answer
61 views

Can fMRI and EEG signals be generated from NEF models?

The basic function of the NEF is to map the outside world onto neurons, using the firing rates of the neurons. It also supports various neuron models. Have these firing rates been used to create EEG ...
3
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1answer
387 views

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

I know that it is possible to detect "focus" with a consumer EEG with a single electrode and a reference point (ear clip), even without conductive gel, but is it possible to detect a flow state with ...
3
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1answer
54 views

What is the best way to turn EEG scans in to 3D images?

I'm looking for the best way to turn standard EEG scans into 3D images of activity in the brain over the time of scanning, for example like the Glass Brain images or even connectome-style images. I ...
3
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1answer
105 views

How to build a high sensitivity EEG headset for continual monitoring?

After having a conversation with a couple of the more popular "consumer" level EEG makers such as Versus, I have found that their monitoring abilities are either ...
3
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1answer
63 views

Finding consciousness through EEG

I've read an article about the consciousness in vegetative patients. Adrian Owen is one of the neuroscientist making research on this field. The article published on "Le scienze" was about the usage ...
3
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1answer
61 views

How does the frequency of a visual stimulus affect the steady-state visually evoked potential?

I want to make a project for EEG signal processing, and in my research I found the concept of SSVEP, which means that if you have a stimulus with low frequency applied to the eye, the electrical ...