Information Technology Reference
In-Depth Information
Fig. 4.7: Performance of ICA when the 1-, 2-, 3-, 4-, and 5-min epochs of data
were analyzed. The bars with different colors in the panels (
a
)-(
e
) represent the
time periods during which features were resolved, namely, the epileptiform, PLED,
and triphasic waves. It can be seen that the ICA results remained unchanged un-
der various data lengths where the same CJD-related patterns repeatedly appeared.
Specifically, the PLED presents in the first 20 s within the first minute and in the
17th-35th s in the fifth minute of the epoch (see the
yellow bars
in the 1st and 5th
windows in (
a
), 1st and 4th windows in (
b
), 1st and 2nd windows in (
c
), 1st and 2nd
windows in (
d
) and in (
e
)). The epileptiform were detected within the 3rd window
in (
a
), 2nd and 3rd windows in (
b
), 2nd and 3rd windows in (
c
), 1st and 2nd win-
dows in (
d
) and in (
e
) (see orange bars). Finally, the triphasic waves can be observed
across from the 2nd to the 5th windows in (
a
), which also appeared in the 1st-4th
windows in (
b
), 1st and 2nd windows in (
c
), 1st and 2nd windows in (
d
) and in (
e
)
(see
green bars
). It should be noted that not only the temporal features preserved
the same waveforms and durations, but also the three corresponding spatial maps
remained resemble. E: epileptiform, P: PLED, T: triphasic wave.
