Electroencephalography Eeg
Electroencephalography Eeg - Related Videos
12:48
Investigating Social Cognition in Infants and Adults Using Dense Array Electroencephalography (dEEG)
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Cited by 2 •
2011
Dense array electroencephalography is being used increasingly to study social cognitive functions in infants and adults. Here we present an established methodology that represents a significant improvement on conventional methodologies for studying EEG in infants and adults.
09:19
Electro-encephalography (EEG)
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2023
EEG is a non-invasive technique that can measure brain activity. The neural activity generates electrical signals that are recorded by EEG electrodes placed on the scalp. When an individual is engaged in performing a cognitive task, brain activity changes and these changes can be recorded on the EEG graph. Therefore, it is a powerful tool for cognitive scientist aiming to better understand the neural correlates associated with different aspects of cognition, which will ultimately help them...
11:25
Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding
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Cited by 28 •
2013
Development of an effective brain-machine-interface (BMI) system for restoration and rehabilitation of bipedal locomotion requires accurate decoding of user's intent. Here we present a novel experimental protocol and data collection technique for simultaneous non-invasive acquisition of neural activity, muscle activity, and whole-body kinematics during various locomotion tasks and conditions.
04:45
Assessing Brain Hyperexcitability with Transcranial Magnetic Stimulation and Electroencephalography
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2025
Source: Shafi, M. M., et al. A Multimodal Imaging- and Stimulation-based Method of Evaluating Connectivity-related Brain Excitability in Patients with Epilepsy. J. Vis. Exp. (2016)The video demonstrates the procedure for using transcranial magnetic stimulation (TMS) and electroencephalography (EEG) to assess neuronal excitability in patients with epilepsy. It details the steps for aligning the patient’s head with a pre-recorded brain scan, positioning the TMS coil over a functionally connected...
04:40
Simultaneous Electroencephalography and Magnetoencephalography to Identify Seizure-Prone Brain Regions
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2025
Source: Papadelis, C., et al., Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy. J. Vis. Exp. (2016). This video demonstrates the method of using electroencephalography (EEG) and magnetoencephalography (MEG) recordings to identify interictal epileptiform discharges (IEDs) and high-frequency oscillations (HFOs) to locate seizure-prone regions in the brain.
FAQs
Scalp electrodes detect small voltage fluctuations generated by synchronized activity in neuronal populations. An amplifier then converts these signals into waveforms that can be examined as brain activity varies. This signal chain lets investigators relate electrical changes to brain state, behavior, and task demands without directly accessing brain tissue.
EEG waveforms reflect changing brain states and task demands rather than a single fixed pattern. In psychology, this variability helps investigators examine how neural function relates to attention, perception, learning, emotion, sleep, and cognitive processing. Interpreting each waveform therefore requires considering both the activity being studied and the context in which it was recorded.
EEG offers millisecond-level temporal resolution, allowing researchers to track when electrical changes occur during brain activity. Imaging methods that provide greater spatial detail can help identify where activity is associated with a process. Used together, these strengths support a more complete examination of relationships between neural events and behavior.
A recording begins with electrodes placed on the scalp, followed by amplification of the voltage signals they detect. The resulting waveforms are examined in relation to the participant’s brain state or task demands. Because the approach is noninvasive, it can support psychological studies of cognition and behavior while preserving millisecond-level timing.
EEG can be used to study attention, perception, learning, emotion, sleep, and cognitive processing. Its rapid timing is especially relevant when researchers want to relate changes in neural activity to changing task demands or behavioral states. These measurements help psychology researchers investigate brain–behavior relationships across several areas of mental functioning.
Clinicians apply EEG to assess abnormal brain activity, while researchers use it to examine neural function and behavior. The recorded waveforms provide information about electrical activity and how it varies with brain state or task demands. This distinction allows EEG to serve both clinical assessment and psychological research without changing its noninvasive recording approach.