摘要：We have previously demonstrated that an EEG-controlled web browser based on
self-regulation of slow cortical potentials (SCPs) enables severely paralyzed patients to
browse the internet independently of any voluntary muscle control. However, this system
had several shortcomings, among them that patients could only browse within a limited number
of web pages and had to select links from an alphabetical list, causing problems if the link names
were identical or if they were unknown to the user (as in graphical links). Here we describe a new
EEG-controlled web browser, called Nessi, which overcomes these shortcomings. In Nessi, the
open source browser, Mozilla, was extended by graphical in-place markers, whereby different brain
responses correspond to different frame colors placed around selectable items, enabling the user
to select any link on a web page. Besides links, other interactive elements are accessible to the
user, such as e-mail and virtual keyboards, opening up a wide range of hypertext-based
applications.
