Most of our progress has been made in setting up the new lab. We have acquired the equipment we need to begin collecting data including scanning electron microscopes (SEMs), a two-photon laser scanning microscope, and the electron microscopy sample preparation equipment. We have begun testing a variety of novel staining methodologies to improve contrast in our electron microscopy samples. I have designed a custom in-vacuum ultramicrotome for use in our scanning electron microscopes for serial block-face scanning electron microscopy. This machine is currently under assembly at the NINDS machine shop. The laboratory space for the electron microscopes and two-photon microscope is nearing completion. The space includes enclosures for the SEMs that tightly control the temperature during long-term experiments. We will be joined by two postdocs starting October 2012. Dr. Marta Pallotto will explore the connectivity of the mouse olfactory bulb with an emphasis on the role of adult neurogenesis. Dr. Christopher Harris will use the zebrafish visual system to identify the circuits used for complex goal-directed behaviors such as prey-capture.

Project Start
Project End
Budget Start
Budget End
Support Year
1
Fiscal Year
2012
Total Cost
$1,531,208
Indirect Cost
City
State
Country
Zip Code
Ding, Huayu; Smith, Robert G; Poleg-Polsky, Alon et al. (2016) Species-specific wiring for direction selectivity in the mammalian retina. Nature 535:105-10
Pallotto, Marta; Watkins, Paul V; Fubara, Boma et al. (2015) Extracellular space preservation aids the connectomic analysis of neural circuits. Elife 4:
Hoggarth, Alex; McLaughlin, Amanda J; Ronellenfitch, Kara et al. (2015) Specific wiring of distinct amacrine cells in the directionally selective retinal circuit permits independent coding of direction and size. Neuron 86:276-91
Mehta, Bhupesh; Ke, Jiang-Bin; Zhang, Lei et al. (2014) Global Ca2+ signaling drives ribbon-independent synaptic transmission at rod bipolar cell synapses. J Neurosci 34:6233-44
Grimes, William N; Hoon, Mrinalini; Briggman, Kevin L et al. (2014) Cross-synaptic synchrony and transmission of signal and noise across the mouse retina. Elife 3:e03892
Helmstaedter, Moritz; Briggman, Kevin L; Turaga, Srinivas C et al. (2013) Connectomic reconstruction of the inner plexiform layer in the mouse retina. Nature 500:168-74
Andres, Bjoern; Koethe, Ullrich; Kroeger, Thorben et al. (2012) 3D segmentation of SBFSEM images of neuropil by a graphical model over supervoxel boundaries. Med Image Anal 16:796-805
Briggman, Kevin L; Bock, Davi D (2012) Volume electron microscopy for neuronal circuit reconstruction. Curr Opin Neurobiol 22:154-61
Denk, Winfried; Briggman, Kevin L; Helmstaedter, Moritz (2012) Structural neurobiology: missing link to a mechanistic understanding of neural computation. Nat Rev Neurosci 13:351-8
Kleinfeld, David; Bharioke, Arjun; Blinder, Pablo et al. (2011) Large-scale automated histology in the pursuit of connectomes. J Neurosci 31:16125-38