In EEG, what you see is not always what you get. One of the most important—and sometimes frustrating—skills for EEG technologists is learning to distinguish true cerebral activity from artifact. Artifacts can mimic pathological findings, obscure critical data, and lead to misinterpretation if not properly recognized. Understanding EEG artifacts is not just a technical skill—it is essential for ensuring accurate diagnosis, high-quality recordings, and patient safety. What Is a

Trauma leaves marks that are not always visible on imaging, lab tests, or clinical exams. But on EEG, the story can be different. Post traumatic stress disorder (PTSD) is often described in psychological terms flashbacks, hypervigilance, emotional dysregulation. Yet beneath these symptoms lies a measurable shift in brain dynamics. Increasing evidence suggests that PTSD is not just a disorder of memory or emotion, but a disorder of neural oscillations and network connectivity.

Epilepsy is not a single story—it is a collection of many, each written by the brain. When people hear the word epilepsy, they often imagine one type of seizure: dramatic shaking, sudden collapse, and loss of control. In reality, epilepsy is a broad group of neurological disorders known as epilepsy syndromes, each with distinct seizure types, EEG patterns, triggers, and long-term considerations.

Functional Neurologic Disorder (FND) is a neurological condition caused by changes in how brain networks function, rather than by structural damage or disease within the brain itself. Although imaging and diagnostic tests are often normal, the symptoms experienced by individuals with FND are very real and can significantly interfere with daily life.

This next post in our EEG in Epilepsy Series with a closer look at Ohtahara syndrome—also known as Early Infantile Epileptic Encephalopathy.

This rare, genetic neurological syndrome that primarily effects girls causes a progressive loss of motor skills, developmental delays, breathing difficulties and seizures. What might we expect on the EEG?

Angelman syndrome (AS) is a rare neuro‑developmental disorder that affects one in 15,000 people.

When can a febrile seizure be concerning? In the rare circumstance that it is Dravet Syndrome.

Epilepsydiagnosis.org as a resource: Epilepsydiagnosis.org was created by the ILAE to use as a learning tool for patients, families, and...