100 years of EEG: How this technology transformed neuroscience

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100 years of EEG: How this technology transformed neuroscience
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Electroencephalography has allowed scientists to record and read brain activity.

ArticleBody:This article was originally featured on The Conversation. Electroencephalography, or EEG, was invented 100 years ago. In the years since the invention of this device to monitor brain electricity, it has had an incredible impact on how scientists study the human brain. Since its first use, the EEG has shaped researchers’ understanding of cognition, from perception to memory.

For example, theta oscillations that cycle at 4 to 8 hertz are important for communication between brain regions involved in memory encoding and retrieval in animals and humans. Researchers then examined whether they could alter neural oscillations and therefore affect how neurons talk to each other. Studies have shown that many behavioral and noninvasive methods can alter neural oscillations and lead to changes in cognitive performance.

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