Abstract #3082
Highest cross-hemisphere correlations of resting-state FMRI in the awake macaque exhibit high correspondence to the pattern of callosal synaptic connections
Hang Joon Jo 1 , Stephen J Gotts 2 , Brian E Russ 3 , David A Leopold 3 , and Peter A Bandettini 1
1
Section on Functional Imaging Methods,
Laboratory of Brain and Cognition, National Institute of
Mental Health, Bethesda, MD, United States,
2
Section
on Cognitive Neuropsychology, Laboratory of Brain and
Cognition, National Institute of Mental Health, MD,
United States,
3
Section
on Cognitive Neurophysiology and Imaging, Laboratory of
Neuropsychology, National Institute of Mental Health,
MD, United States
In our previous study, we reported that the resting
brain activity of one hemisphere was maximally
correlated with locations close to the corresponding
anatomical location in nearly half of the cortex in the
human brain, locations which are strongly reminiscent of
the locations of callosal connections revealed by
horseradish peroxidase tracing in monkeys, particularly
in occipital, temporal, and parietal cortex. To examine
this phenomenon more directly in macaque monkeys, we
present that the maximum correlations of resting-state
FMRI for individual monkeys can reflect the locations of
axonal connections that were revealed by the existing
studies of anatomical tracing experiments.
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