Journal
JOURNAL OF NEUROPHYSIOLOGY
Volume 107, Issue 9, Pages 2463-2474Publisher
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/jn.00891.2011
Keywords
homolog; primate; oculomotor network; resting-state functional magnetic resonance imaging; fronto-parietal network; parietal cortex; premotor cortex
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Funding
- Canadian Institutes of Health Research [MOP-89785, PRG-165679, MOP-84293]
- Natural Science and Engineering Research Council
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Hutchison RM, Gallivan JP, Culham JC, Gati JS, Menon RS, Everling S. Functional connectivity of the frontal eye fields in humans and macaque monkeys investigated with resting-state fMRI. J Neurophysiol 107: 2463-2474, 2012. First published February 1, 2012; doi:10.1152/jn.00891.2011.-Although the frontal eye field (FEF) has been identified in macaque monkeys and humans, practical constraints related to invasiveness and task demands have limited a direct cross-species comparison of its functional connectivity. In this study, we used resting-state functional MRI data collected from both awake humans and anesthetized macaque monkeys to examine and compare the functional connectivity of the FEF. A seed region analysis revealed consistent ipsilateral functional connections of the FEF with fronto-parietal cortical areas across both species. These included the intraparietal sulcus, dorsolateral prefrontal cortex, anterior cingulate cortex, and supplementary eye fields. The analysis also revealed greater lateralization of connectivity with the FEF in both hemispheres in humans than in monkeys. Cortical surface-based transformation of connectivity maps between species further corroborated the remarkably similar organization of the FEF functional connectivity. The results support an evolutionarily preserved frontoparietal system and provide a bridge for linking data from monkey and human studies.
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