HIGH DENSITY EEG TESTING

Breakthrough Technology

At CNNH, we are proud to provide the latest in non-invasive EEG technology: High Density Electroencephalography (HD-EEG) using the Geodesic® EEG System 250 from Electrical Geodesics, Inc. (EGI). HD-EEG is an improvement on conventional approaches to EEG, as it uses a much larger number of sensors (small saline soaked sponges that record the electrical brain activity) for superior accuracy and detection of abnormalities.

EGI has devised an ingenuous way to apply the large number of sensors (128 in our system) by devising a “net” that can apply the electrodes in minutes. The application is quick and painless, reduces patient anxiety about the test and, therefore, increases compliance. Additionally, the net application does not require the need for sedation, and since there is no abrasion of the scalp as is typical with conventional EEG’s, risk of infection is reduced.

Our HD-EEG technicians have specialized training and experience in the use of dense array apparatus, and strive to create a comfortable, soothing experience for our patients without the need for sedation. Comfortable chairs and TV/Video Games are provided to keep patients occupied. CNNH HD-EEG testing (not to be confused with qEEG) is useful in evaluating epilepsy/seizures, autism, ADHD, brain injury, neuropsychiatric disorders and more…

Anyone can get HD-EEG testing done at CNNH, you do not have to be a CNNH patient in order to schedule an HD-EEG test. We often get referrals from other doctors to perform HD-EEG testing on their patients our this testing service is so unique and invaluable.

The High Density Difference

HD-EEG is a way to electrically “image” the brain, as the sensor data is run through a powerful computer that allows the location of abnormal brain activity to be determined with great accuracy. This data can then be mapped directly onto an MRI.

High Density EEG (previously known as dense array EEG) is widely used for research applications investigating aspects of brain function and mind control, and has been featured on the cover of National Geographic and Newsweek. However, CNNH is the one of the leading clinical providers in the nation that recognize the value of this technology in the clinical realm to help our clinicians make accurate and thorough diagnoses. HD-EEG is a useful clinical tool in our office for the detection of electrical abnormalities associated with seizure activity (i.e. Epilepsy) but is also useful for detecting “subclinical” low-level electrical activity that might be contributing to other disorders such as ADHD or Autism. This low level “subclinical” activity was not previously detectable with older EEG technologies, and allows our clinicians to make nuanced and sometimes surprising and life-changing diagnoses… diagnoses that would have been impossible before the advent of High Density EEG technology.

Read More about how CNNH is a leading provider of High Density EEG…

High Density EEG

Conventional EEG

128+ Sensors

Improved accuracy and the ability to localize the source of abnormal electrical brain activity. The large amount of electrodes, which completely surround the head, allow our clinicians to see more detailed brain activity for more sophisticated diagnoses.

  • “Whole head” coverage to identify source of electrical brain activity
  • Electrical sources can be mapped onto MRI
  • Necessary technology to determine localized brain abnormalities, pre-surgical planning, and overall patient management
  • Clearer and more accurate imaging of brain activity

18-24 Sensors

Does not surround the head. This technology has not been updated for decades and provides poor resolution and spatial accuracy.

  • No MRI brain mapping
  • Insufficient number of electrodes for 3d modeling
  • Poor resolution of brain data

Sponges and Water

A “sensor net” made up of sponges and soaked in warm water, baby shampoo and a small amount of salt. The “sensor net” surrounds the head like a shower cap, no scraping or gluing. No immediate hair washing will be necessary after the procedure.

Scraping and Gluing

The scalp is scraped for each electrode and they are applied using a sticky glue-like substance.

Quick and Painless

The application process is quick, painless and comfortable, meaning no sedation or restraint is necessary. This makes it ideal for patients with behavior difficulties and allows for longer recording sessions.

Sedation and Pain

Some patients require sedation or restraint for the procedure.

Reduced Risk of Infection

Since there is no abrasion of the scalp, there is a reduced risk of infection.

Risk of Infection

Since the scalp might be scraped, there is an increased risk for infection.

Investing in the Future

CNNH is the leading clinical provider in the region willing to make the investment in technology and staff training to properly administer and interpret HD-EEG testing.

Outdated Technology

Conventional EEG technology has not changed in decades.

Bobbi’s Struggles w/ Epilepsy: A Happy Ending at CNNH

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