ECAS can be performed both orally as well as in written form. Thus, patients with dysarthria or strong motor disabilities in the hand can also do ECAS. However, when disease progresses and oral speaking and hand function are impaired, the performance of ECAS is limited. Thus, no standardized method to determine cognitive profiles of patients in advanced stages of the disease exists. For those with strong motor impairments only communication via eye-tracking devises is possible.
The development of an eye-tracking-module of ECAS, as well as an ECAS version, which can be controlled by Brain-Computer-Interface (BCI) is performed by the laboratory group of PD Dr. Dr. Lulé and Prof. Dr. A. C. Ludolph.
