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A random Abstract
Our Project
Our Team
A comparison of two spelling Brain-Computer Interfaces based on visual P3 and SSVEP in Locked-In Syndrome.
[locked-in syndrome]
We
study
the
applicability
of
a
visual
P
3
-
based
and
a
Steady
State
Visually
Evoked
Potentials
(
SSVEP
)
-
based
Brain
-
Computer
Interfaces
(
BCIs
)
for
mental
text
spelling
on
a
cohort
of
patients
with
incomplete
Locked-
In
Syndrome
(
LIS
)
.
Seven
patients
performed
repeated
sessions
with
each
BCI
.
We
assessed
BCI
performance
,
mental
workload
and
overall
satisfaction
for
both
systems
.
We
also
investigated
the
effect
of
the
quality
of
life
and
level
of
motor
impairment
on
the
performance
.
All
seven
patients
were
able
to
achieve
an
accuracy
of
70
%
or
more
with
the
SSVEP-based
BCI
,
compared
to
3
patients
with
the
P
3
-
based
BCI
,
showing
a
better
performance
with
the
SSVEP
BCI
than
with
the
P
3
BCI
in
the
studied
cohort
.
Moreover
,
the
better
performance
of
the
SSVEP-based
BCI
was
accompanied
by
a
lower
mental
workload
and
a
higher
overall
satisfaction
.
No
relationship
was
found
between
BCI
performance
and
level
of
motor
impairment
or
quality
of
life
.
Our
results
show
a
better
usability
of
the
SSVEP-based
BCI
than
the
P
3
-
based
one
for
the
sessions
performed
by
the
tested
population
of
locked-
in
patients
with
respect
to
all
the
criteria
considered
.
The
study
shows
the
advantage
of
developing
alternative
BCIs
with
respect
to
the
traditional
matrix-based
P
3
speller
using
different
designs
and
signal
modalities
such
as
SSVEPs
to
build
a
faster
,
more
accurate
,
less
mentally
demanding
and
more
satisfying
BCI
by
testing
both
types
of
BCIs
on
a
convenience
sample
of
LIS
patients
.
Diseases
Validation
Diseases presenting
"motor impairment on the performance"
symptom
locked-in syndrome
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