Colenso Speer

Portrait of Colenso Speer

Colenso Speer

Biology Associate Professor & BISI Physiological Systems (PSYS) Director

Director, Physiological Systems Concentration Area, BISI Graduate Program

cspeer@umd.edu 1112 Bioscience Research Bldg
301 405 0178

Graduate Program Affiliations


Research Interests

  • What are the molecular and activity-dependent mechanisms instructing neural circuit development?
  • What is the logic of synaptic connectivity within neural circuits and how does brain structure establish brain function?
  • How do sensory systems capture and transform information about the world into perception and behavior?

These are a few of the big, overarching questions motivating our research on the development and plasticity of neural circuits for sensory perception. Using the mammalian visual system as a model, we explore changes in synaptic connectivity and function in parallel neural pathways from the eyes to central targets in the brain. We use transgenic and molecular tools to label and manipulate specific neuronal subsets in the visual system, electrophysiological and optical recording techniques to assay circuit function and connectivity, and high-resolution imaging techniques, including three-dimensional super-resolution fluorescence microscopy, to explore the molecular and structural refinement of developing circuits. By applying high-performance computing approaches to automate and refine our image analysis, we are working to extract new biological findings from big data.


All Publications

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Latest Papers

Eye-specific active zone clustering underlies synaptic competition in the developing visual system


Author(s): Chenghang Zhang, Tarlan Vatan, Colenso M Speer
UMD Author(s): Colenso Speer


Activity-dependent synapse clustering underlies eye-specific competition in the developing retinogeniculate system


Author(s): Chenghang Zhang, Tarlan Vatan, Colenso M Speer
UMD Author(s): Colenso Speer


Eye-specific differences in active zone addition during synaptic competition in the developing visual system


Author(s): Chenghang Zhang, Tarlan Vatan, Colenso M. Speer
UMD Author(s): Colenso Speer


Volumetric super-resolution imaging by serial ultrasectioning and stochastic optical reconstruction microscopy in mouse neural tissue

| STAR Protocols
Author(s): Tarlan Vatan, Jacqueline A. Minehart, Chenghang Zhang, et. al
UMD Author(s): Colenso Speer


The synaptic basis of activity-dependent eye-specific competition


Author(s): Chenghang Zhang, Colenso M. Speer
UMD Author(s): Colenso Speer


Volumetric super-resolution imaging by serial ultrasectioning and STochastic Optical Reconstruction Microscopy (STORM) in neural tissue


Author(s): Tarlan Vatan, Jacqueline A. Minehart, Chenghang Zhang, et. al
UMD Author(s): Colenso Speer


Correcting Artifacts in Single Molecule Localization Microscopy Analysis Arising from Pixel Quantum Efficiency Differences in sCMOS Cameras

| Scientific Reports
Author(s): Hazen P. Babcock, Fang Huang, Colenso M. Speer
UMD Author(s): Colenso Speer


Mapping Synaptic Input Fields of Neurons with Super-Resolution Imaging.

| Cell
Author(s): Sigal YM, Speer CM, Babcock HP, et. al
UMD Author(s): Colenso Speer