Electroencephalography segmentation by type separates the market into routine EEG, long-term video-EEG, and ambulatory EEG equipment. Routine 30-minute studies dominate hospital procurement budgets, accounting for the largest share because they satisfy basic epilepsy and encephalopathy screening. Long-term video-EEG, although lower in unit sales, commands 4–5× higher ASPs and is indispensable for pre-surgical epilepsy localization, thus lifting overall market value. Ambulatory EEG, the smallest but fastest-expanding segment, enables outpatient capture of infrequent events; reimbursement expansion and miniaturized amplifiers convert unmet demand into incremental revenue without cannibalizing inpatient volumes. Application-level taxonomy—epilepsy, sleep disorders, neuro-feedback, brain-computer interface (BCI), and others—maps revenue to clinical acuity and payer willingness. Epilepsy retains >55% of global spend, driven by chronic monitoring and surgical candidacy evaluations. Sleep disorder studies generate stable replacement sales, while emerging BCI and neuro-feedback segments, though <7% of share, attract venture funding and diversify the revenue base.