<s>
In	O
medicine	O
,	O
Intermittent	B-Algorithm
Photic	I-Algorithm
Stimulation	I-Algorithm
,	O
or	O
IPS	O
,	O
is	O
a	O
form	O
of	O
visual	O
stimulation	O
used	O
in	O
conjunction	O
with	O
electroencephalography	B-Application
to	O
investigate	O
anomalous	O
brain	B-Application
activity	I-Application
triggered	O
by	O
specific	O
visual	O
stimuli	O
,	O
such	O
as	O
flashing	O
lights	O
or	O
patterns	O
.	O
</s>
<s>
IPS	O
and	O
EEGs	B-Application
are	O
often	O
used	O
to	O
diagnose	O
conditions	O
such	O
as	O
photosensitive	O
epilepsy	O
.	O
</s>
