Changes of the brain's bioelectrical activity in cognition, consciousness, and some mental disorders
Author(s):
Abstract:
Background
An electroencephalogram (EEG) is an accepted method in neurophysiology with a wide application. Different types of brain rhythms indicate that simultaneous activity of the brain cortex neurons depend on the persons mental state.Method
we have focus on reviewing the existing literature pertaining to changes of the brains bioelectrical activity that recorded from the scalp in different conditions such as cognition and some mental disorders.Result
The frequency of brain waves may indicate sleep, consciousness, cognition, and some mental disorders. Slow brain waves are seen in some conditions such as sleep, coma, brain death, depression, autism, brain tumors, obsessivecompulsive disorder (OCD), attention deficit hyperactivity disorder (ADHD), and encephalitis, while rapid waves are generally reported in conditions such as epilepsy, anxiety, posttraumatic stress disorder (PTSD), and drug abuse.Conclusion
Increase in the EEG rhythm is a marker of high brain activity that leads to high degrees of consciousness, while slow waves are suggestive of less brain activity. The pattern of EEG rhythm can be an indicator of some mental disorders, too.Keywords:
Language:
English
Published:
Medical Journal Of the Islamic Republic of Iran, Volume:31 Issue: 1, Winter 2017
Pages:
307 to 312
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