Timothy Harris is a research professor in the Department of Biomedical Engineering. He leads the Applied Physics and Instrumentation Group at the HHMI Janelia Research Campus, and is the originator of the project that produced the Neuropixels Si probe for extracellular recording in animals, mostly mice, and rats. He shares his time between Janelia and Johns Hopkins and is working on projects to enable recording 10-20,000 neurons in rodents and 30-50,000 neurons in non-human primates, as well as stimulate with high resolution.
He received a BS in Chemistry at California Polytechnical State University, San Luis Obispo, and a PhD in Analytical Chemistry at Purdue University.