Abstract:
:Studies of resting-state activity in the brain have provoked critical questions about the brain's functional organization, but the biological basis of this activity is not clear. Specifically, the relationships between interregional correlations in resting-state measures of activity, neuronal functional connectivity and anatomical connectivity are much debated. To investigate these relationships, we have examined both anatomical and steady-state functional connectivity within the hand representation of primary somatosensory cortex (areas 3b and 1) in anesthetized squirrel monkeys. The comparison of three data sets (fMRI, electrophysiological, and anatomical) indicate two primary axes of information flow within the SI: prominent interdigit interactions within area 3b and predominantly homotopic interactions between area 3b and area 1. These data support a strikingly close relationship between baseline functional connectivity and anatomical connections. This study extends findings derived from large-scale cortical networks to the realm of local millimeter-scale networks.
journal_name
Neuronjournal_title
Neuronauthors
Wang Z,Chen LM,Négyessy L,Friedman RM,Mishra A,Gore JC,Roe AWdoi
10.1016/j.neuron.2013.04.023subject
Has Abstractpub_date
2013-06-19 00:00:00pages
1116-26issue
6eissn
0896-6273issn
1097-4199pii
S0896-6273(13)00325-5journal_volume
78pub_type
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