<s>
Amplitude	B-Algorithm
of	I-Algorithm
Low	I-Algorithm
Frequency	I-Algorithm
Fluctuations	I-Algorithm
(	O
ALFF	O
)	O
and	O
fractional	O
Amplitude	B-Algorithm
of	I-Algorithm
Low	I-Algorithm
Frequency	I-Algorithm
Fluctuations	I-Algorithm
(	O
f/ALFF	O
)	O
are	O
neuroimaging	B-Algorithm
methods	O
used	O
to	O
measure	O
spontaneous	O
fluctuations	O
in	O
BOLD-fMRI	B-Algorithm
signal	O
intensity	O
for	O
a	O
given	O
region	O
in	O
the	O
resting	B-Algorithm
brain	I-Algorithm
.	O
</s>
<s>
Both	O
measures	O
have	O
been	O
investigated	O
as	O
part	O
of	O
reliable	O
biomarkers	O
for	O
many	O
neurological	O
conditions	O
including	O
schizophrenia	B-Application
,	O
anorexia	O
nervosa	O
,	O
and	O
ADHD	O
.	O
</s>
