Abstract:
In the past, mind control was thought to
be a fantasy beyond human intelligence. Over the
last few decades, significant advances have been
made, such as the invention of novel devices for
enhancing information flow into computers
through multimodel devices. Brain-Computer
Interface (BCI) was initially developed to build
communication between paralyzed people and the
environment. BCI variously improves human life
in the field of medicine, entertainment, security
and etc. This paper focuses on the technologies
and principles behind the BCI. The paper also
discusses the various steps in the BCI system:
signal acquisition, preprocessing, feature
extraction, and classification. The key challenge
in BCI signal processing is the curse of
dimensionality in the feature vector. Further, the
paper focuses on the BCI communication
methods, such as invasive, semi-invasive, and
non-invasive BCI, advantages, and limitations.
