![]() Today´s EEG systems are portable, allowing for more ecological data collection in real-world environments (e.g., at a participant’s home). Relatively inexpensive and adaptable to different contexts compared with other brain assessment devices (e.g., MRI or magnetic resonance imaging).This is an important asset of EEG considering that changes in the electrical activity in your brain happen much faster than the blink of an eye. ![]() Excellent time resolution, allowing non-invasive access to brain activity within tens of milliseconds.These sensors are capable of accurately picking up the activity of neurons in different parts of the brain in the time frame in which brain processes occur (e.g., 80-400ms).ĮEG devices have two clear advantages (Cohen, 2011): An EEG is an electrophysiological recording device that measures, in real-time, the electrical field that results from neural activity (microvolt signal).Ī typical EEG system uses one or multiple sensors (electrodes usually in the shape of small metal discs) placed in different sites on the head, usually according to the 10/20 system landmarks (Jasper, 1958). ![]() When thousands of these brain cells fire at the same time, they generate small currents that can be detected on the head surface with a right device (Jung & Berger, 1979). Our brains contain neurons that are deeply interconnected through synaptic mechanisms. To better understand what an EEG test is, first we must understand what an EEG is. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |