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Changes in Brain Wave Patterns can Predict the Onset of Epilepsy

by Rishika Gupta on December 22, 2017 at 1:52 PM
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Changes in Brain Wave Patterns can Predict the Onset of Epilepsy

Specific brain wave changes can predict epileptic seizures in patients with brain injuries using EEG. Theta waves were the brain waves that were recorded. The findings of this study are further discussed in the Journal of Neuroscience.

Their findings demonstrate how using EEGs to identify changes in brain wave patterns over time can predict which post-injury patients will develop epilepsy. A neurological disorder that disturbs nerve cell activity in the brain, epilepsy causes seizures during which people experience uncontrolled shaking and movement or loss of consciousness.

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"Post-injury epilepsy (PIE) is a devastating, unpreventable consequence of traumatic brain injury (TBI) and stroke, which develops in 10 to 40 percent of survivors months, or even years later," says BGU Professor Alon Friedman, a researcher in the Brain Imaging Research Center and the Zlotowski Center for Neuroscience.

The Epilepsy Foundation estimates more than two million people in the United States have, or have had, some form of epilepsy; many do not respond to medication. In addition to suffering from unpredictable, often difficult to control seizures, patients with PIE are also prone to neuropsychiatric conditions such as cognitive decline and depression.
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"While news of promising drugs likely to prevent the onset of epilepsy has emanated from scientific research, we need to first detect reliable biomarkers in the brain that predict which patients will develop the disease," says Prof. Friedman.

Through their research, the BGU team discovered that theta waves, measured as part of an EEG, can predict five different types of post-injury epilepsy in mice and rats. Theta waves generate the rhythmic, neural oscillatory pattern in EEG signals, recorded either from inside the brain or from electrodes glued to the scalp.

By tracking continuous recordings, from the time of injury through the onset of spontaneous seizures, BGU researchers discovered a specific pattern of theta activity decline over time as signs of epilepsy development. This pattern also seems to be associated with disturbances in sleep-wake cycles.

"These findings hold great promise for expediting targeted clinical investigations of EEG dynamics in human patients, which could lead to new approaches for predicting, and eventually treating, epilepsy as well as other neuropsychiatric complications that develop after brain injuries," says lead study author Dan Z. Milikovsky, an M.D.-Ph.D. student at the BGU Zlotowski Center for Neuroscience.

Source: Eurekalert
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