EEG, ERP, ECG and QEEG Methodology

Lab Equipment

Our lab is equipped with a Biosemi ActiveTwo 64-channel EEG/ERP system made possible by National Science Foundation Major Research Instrumentation grant in 2013 [grant number 1337152].

In the Fall of 2016, our lab will also be newly equipped with Respiratory Sinus Arrythmia (RSA) software and equipment, which will allow for measurement of maximum and minimum changes in heart rate during respiration and automatically report the difference between these values.




 
 

EEG

QEEG

Electroencephalography
is an electrophysiological recording method that allows for the recording of electrical activity of neurons on the cortical surface of the brain. It is typically noninvasive, with  electrodes placed on the scalp. In clinical contexts, EEG refers to the recording of the brain's spontaneous electrical activity over a period of time, as recorded from multiple electrodes placed on the scalp. Diagnostic applications generally focus on the spectral content of EEG, that is, the type of neural oscillations (popularly called "brain waves") that can be observed in EEG signals.  The PACE lab focuses on non-clinical, experimental recording of EEG activity as related to participants' performance on tasks and surveys, sometimes known as Quantitative EEG (QEEG).
Quantitative EEG 
takes advantage of EEG recording methodology by examining the continuous EEG ​recording in an experimental, as opposed to clincal, context. Thus the activity patterns of neural oscillations (i.e., brain waves) can be evaluated in terms of participants' performance on tasks, on surveys, and in association with stable task performance or personality traits. Unlike ERP research, this methodology does not examine the average neural activity synchronized to the onset of multiple presentations of a given experimental trial. Instead, a continuous recording is examined during task performance or while at rest and then analyzed for trends or patterns of brain wave activation during the entire recording period that may be associated with the hypothesis.

ERP

ECG

Event-Related Potential
methodology is an experimental variation of EEG in which the EEG being recorded is temporally synchronized with an externally delivered stimulus, such as an auditory or visual cue. This allows researchers to examine the average pattern of brain activation from a specific population of electrodes elicited by a repeated  experimental condition or stimulus.  This technique allows for exceptional temporal accuracy of cortical neural responsiveness as well as examination of neural resource allocation during sensory, cognitive, social, and affective stimulus processing.
Electrocardiography
 is the process of recording the electrical activity of the heart over a prolonged period of time. Electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat. ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system including rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.
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