<s>
High-frequency	B-Algorithm
oscillations	I-Algorithm
(	O
HFO	O
)	O
are	O
brain	B-Algorithm
waves	I-Algorithm
of	O
the	O
frequency	O
faster	O
than	O
~	O
80	O
Hz	O
,	O
generated	O
by	O
neuronal	O
cell	O
population	O
.	O
</s>
<s>
High-frequency	B-Algorithm
oscillations	I-Algorithm
can	O
be	O
recorded	O
during	O
an	O
electroencephalagram	B-Application
(	O
EEG	B-Application
)	O
,	O
local	B-Algorithm
field	I-Algorithm
potential	I-Algorithm
(	O
LFP	O
)	O
or	O
electrocorticogram	O
(	O
ECoG	O
)	O
electrophysiology	B-Application
recordings	O
.	O
</s>
<s>
Other	O
studies	O
points	O
to	O
the	O
HFO	O
role	O
in	O
psychiatric	O
disorders	O
and	O
possible	O
implications	O
to	O
psychotic	O
episodes	O
in	O
schizophrenia	B-Application
.	O
</s>
<s>
Traditional	O
classification	O
of	O
the	O
frequency	O
bands	O
,	O
that	O
are	O
associated	O
to	O
different	O
functions/states	O
of	O
the	O
brain	O
and	O
consist	O
of	O
delta	B-Algorithm
,	O
theta	B-Algorithm
,	O
alpha	O
,	O
beta	B-Algorithm
and	O
gamma	B-Algorithm
bands	O
.	O
</s>
<s>
Recent	O
advance	O
in	O
manufacturing	O
electrophysiological	B-Application
setups	O
enables	O
to	O
record	O
electric	O
potential	O
with	O
high	O
temporal	O
and	O
space	O
resolution	O
,	O
and	O
to	O
"	O
catch	O
"	O
dynamics	O
of	O
single	O
cell	O
action	B-Algorithm
potential	I-Algorithm
.	O
</s>
<s>
In	O
neuroscience	O
nomenclature	O
,	O
there	O
is	O
still	O
a	O
reaming	O
gap	O
between	O
~	O
100Hz	O
and	O
multi	O
unit	O
activity	O
(	O
>500Hz	O
)	O
,	O
so	O
these	O
oscillations	O
are	O
often	O
called	O
high	O
gamma	B-Algorithm
or	O
HFO	O
.	O
</s>
<s>
ECoG	O
recordings	O
from	O
human	O
somatosensory	O
cortex	O
,	O
has	O
shown	O
HFO	O
(	O
reaching	O
even	O
600Hz	O
)	O
presence	O
during	O
sensory	B-Algorithm
evoked	I-Algorithm
potentials	I-Algorithm
and	O
somatosensory	O
evoked	O
magnetic	O
field	O
after	O
median	O
nerve	O
stimulation	O
.	O
</s>
<s>
Interestingly	O
,	O
higher	O
HFO	O
amplitudes	O
(	O
between	O
400	O
and	O
800Hz	O
)	O
after	O
nerve	O
stimulation	O
were	O
also	O
reported	O
in	O
the	O
EEG	B-Application
signal	O
of	O
healthy	O
football	O
and	O
racquet	O
sports	O
players	O
.	O
</s>
<s>
There	O
are	O
increasing	O
number	O
of	O
studies	O
indicating	O
that	O
HFO	O
rhythms	O
(	O
130	O
–	O
180Hz	O
)	O
may	O
arise	O
due	O
to	O
the	O
local	O
NMDA	O
receptor	O
blockage	O
,	O
which	O
is	O
also	O
a	O
pharmacological	O
model	O
of	O
schizophrenia	B-Application
.	O
</s>
<s>
Despite	O
the	O
fact	O
,	O
that	O
these	O
type	O
of	O
HFO	O
was	O
not	O
yet	O
confirmed	O
in	O
human	O
patients	O
,	O
second	O
generation	O
antipsychotic	O
drugs	O
,	O
widely	O
used	O
to	O
treat	O
schizophrenia	B-Application
and	O
schizoaffective	O
disorders	O
(	O
i.e.	O
</s>
<s>
This	O
findings	O
may	O
aid	O
understanding	O
early	O
symptoms	O
of	O
schizophrenia	B-Application
patients	O
and	O
their	O
relatives	O
,	O
that	O
can	O
suffer	O
from	O
olfactory	O
system	O
impairments	O
.	O
</s>
