• In addition to changes in the ERP wave, subjects with mild AD show decreased performance
in the behavioral task associated with the ERP test. This group of subjects has lower button
press accuracy and longer reaction time.
• Recent data confirm these findings when patients were tested in outpatient settings, and
suggest that results from the behavioral task of the ERP test could help discriminate subjects
with mild AD from healthy aging.
• Delayed reaction time is also usually present in patients with a concussion or pseudo
dementia. In the latter, prolonged reaction time is usually accompanied by normal ERP
features.
