title: Organization of long-range inputs and outputs of frontal cortex for top-down control.
abstract: Long-range projections from the frontal cortex are known to modulate sensory processing in multiple modalities. Although the mouse has become an increasingly important animal model for studying the circuit basis of behavior, the functional organization of its frontal cortical long-range connectivity remains poorly characterized. Here we used virus-assisted circuit mapping to identify the brain networks for top-down modulation of visual, somatosensory and auditory processing. The visual cortex is reciprocally connected to the anterior cingulate area, whereas the somatosensory and auditory cortices are connected to the primary and secondary motor cortices. Anterograde and retrograde tracing identified the cortical and subcortical structures belonging to each network. Furthermore, using new viral techniques to target subpopulations of frontal neurons projecting to the visual cortex versus the superior colliculus, we identified two distinct subnetworks within the visual network. These findings provide an anatomical foundation for understanding the brain mechanisms underlying top-down control of behavior.
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Siyu
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Min
authors.initials: M
authors.lastname: Xu
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Wei-Cheng
authors.initials: WC
authors.lastname: Chang
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Chenyan
authors.initials: C
authors.lastname: Ma
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Johnny Phong
authors.initials: JP
authors.lastname: Hoang Do
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Daniel
authors.initials: D
authors.lastname: Jeong
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Tiffany
authors.initials: T
authors.lastname: Lei
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Jiang Lan
authors.initials: JL
authors.lastname: Fan
authors.affiliation: Division of Neurobiology, Department of Molecular and Cell Biology, Helen Wills Neuroscience Institute, Howard Hughes Medical Institute, University of California, Berkeley, California, USA.
authors.forename: Yang
authors.identifier: 0000-0002-3818-877X
authors.initials: Y
authors.lastname: Dan
mesh_terms: D000818:Animals; D001303:Auditory Cortex / Q000502:physiology*; D001931:Brain Mapping; D003071:Cognition / Q000502:physiology; D006179:Gyrus Cinguli / Q000502:physiology; D051379:Mice; D009044:Motor Cortex / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D012677:Sensation / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology*