Functional connectivity in single and multislice echoplanar imaging using resting-state fluctuations.
A previous report of correlations in low-frequency resting-state fluctuations between right and left hemisphere motor cortices in rapidly sampled single-slice echoplanar data is confirmed using a whole-body echoplanar MRI scanner at 1.5 T. These correlations are extended to lower sampling rate multislice echoplanar acquisitions and other right/left hemisphere-symmetric functional cortices. The specificity of the correlations in the lower sampling-rate acquisitions is lower due to cardiac and respiratory-cycle effects which are aliased into the pass-band of the low-pass filter. Data are combined for three normal right-handed male subjects. Correlations to left hemisphere motor cortex, visual cortex, and amygdala are measured in long resting-state scans.
Lowe
M J
MJ
Department of Medical Physics, University of Wisconsin, Madison, USA.
Mock
B J
BJ
Sorenson
J A
JA
D000328:Adult; D001921:Brain / Q000502:physiology*; D002560:Cerebrovascular Circulation / Q000502:physiology; D003627:Data Interpretation, Statistical; D007839:Functional Laterality / Q000502:physiology; D019416:Head Movements / Q000502:physiology; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods* / Q000706:statistics & numerical data; D008297:Male; D009044:Motor Cortex / Q000502:physiology; D010100:Oxygen / Q000097:blood; D010296:Parietal Lobe / Q000502:physiology
D010100:Oxygen