2) WHY BCI?
3) BCI MODEL
4) HOW DOES IT WORK?
5) PRINCIPLE OF OPERATION
6) WHAT IS AN EEG?
7) BCI APPROACHES
11) FUTURE WORK
• Brain-computer interface (BCI) is a communication
system that recognized user’s command only for his
or her brainwaves and reacts according to them.
• A Brain Computer Interface (BCI) is a collaboration in
which a brain accepts and controls a mechanical
device as a natural part of its representation of the
• Computer-brain interfaces are designed to restore
sensory function, transmit sensory information to the
brain, or stimulate the brain through artiﬁcially
generated electrical signals.
o BCI is a new neuroscience paradigm that might help us better
understand how the human brain works.
o BCI research allows us to develop a new class of
bioengineering control devices and robots.
o BCI hold promise for rehabilitation and improving
o BCI can expand possibilities for advanced human computer
o The fullform of EEG is an ElectroEncephaloGram.
o As we know that the surface variation distribution on
the scalp reflects functional activity emerging from
the underlying brain.
o This surface potential variation can be recorded by a
fixing a array of electrodes to the scalp, and
measuring the voltage b/w pair of this electrodes,
which are then filtered, amplified, and recorded.
o At last the resulting data is called EEG.
o The use of EEG signals as vector of communication
between men and machines.
invasive BCIs are system that rely on
electrodes surgically implemented in the
brain, in order to extract such signals.
invasive techniques provide more
accurate signal translation.
very low noise compared to non-invasive
The example of invasive system is
BRAINWAVES PRODUCED BY
*Non-invasive BCIs are
on the contrary systems
where the electrodes are
placed on the user’s head.
*Their disadvantage is that
they are time-consuming
*The most common non-
invasive BCIs are EEG-
1 . M E N TA L T Y P E - W R I T E R .
2 . B C I O F F E R S P A R A LY Z E D
P AT I E N T S I M P R O V E D
Q UA L I T Y O F L I F E .
3 . M I L I TA R Y A N D C I V I L
R E S E A R C H .
4 . A L L O W P AT I E N T S T O
C O N T R O L A C O M P U T E R
B Y C O N S C I O U S
C H A N G E S O F B R A I N
A C T I V I T Y.
1 . D I R E C T
C O M M U N I C A T I O N
B E T W E E N H U M A N
B R A I N A N D
C O M P U T E R S .
2 . B E T T E R L I V I N G , M O R E
F E A T U R E S , M O R E
A D V A N C E M E N T I N
T E C H N O L O G I E S E T C .
3 . N E W W O R K A R E A F O R
S C I E N T I S T S A N D
R E S E A R C H E S A R O U N D
T H E W O R L D .
4 . L O W B A N D W I D T H .
1 . V I R U S AT TAC K S M AY
O C C U R T O B R A I N
C AU S I N G I L L
E F F E C T S .
2 . R E Q U I R E S
E X T E N S I V E
T R A I N I N G .
3 . B C I T E C H N I Q U E S
A R E C O S T LY.
4 . S LO W S P E E D .
o BRAIN GATE
o HONDA ASIMO CONTROL
o GAMING CONTROL
o BIONIC EYE
o Improving physical methods for gathering EEGs.
o Improving generalization.
o Improving knowledge of how to interpret waves.
• BCI is an advancing technology promising paradigm shift in
areas like Machine Control, Human Enhancement, Virtual
reality and etc. So, it’s potentially high impact technology.
• Several potential applications of BCI hold promise for
rehabilitation and improving performance, such as treating
emotional disorders (for example, depression or anxiety),
easing chronic pain, and overcoming movement disabilities due