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Articles by Bill Karsh
Neuropixels Opto: combining high-resolution electrophysiology and optogenetics
Abstract High-resolution extracellular electrophysiology is the gold standard for recording spikes from distributed neural populations and is especially powerful when combined with optogenetics for manipulation of specific cell types with high temporal resolution. We integrated these approaches into prototype Neuropixels Opto probes, which combine electronic and photonic circuits.
Large-scale high-density brain-wide neural recording in nonhuman primates - Nature Neuroscience
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Abstract High-density silicon probes have transformed neuroscience by enabling large-scale neural recordings at single-cell resolution. However, existing technologies have provided limited functionality in nonhuman primates (NHPs) such as macaques. In the present report, we describe the design, fabrication and performance of Neuropixels 1.0 NHP, a high-channel electrode array designed to enable large-scale acute recording throughout large animal brains.
By Eric M. Trautmann, Shude Zhu, Daniel J. O’Shea, Bill Karsh, Jennifer Colonell, Saurabh Vyas, Elom A. Amematsro, Daniel A Wagenaar, Marius Pachitariu, Carolina Mora Lopez, Carolina López, John O’Callaghan, Bogdan Raducanu, Marleen Welkenhuysen, Mark M. Churchland, Tirin Moore, Doris Tsao, Barundeb Dutta, Jan Putzeys
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Nature
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Pinpoint: trajectory planning for multi-probe electrophysiology and injections in an interactive web-based 3D environment
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Single excitatory axons form clustered synapses onto CA1 pyramidal cell dendrites
(a) Comparison between a compound synapse pair and the 2x synapse configuration across the entire dendritic morphology of the pyramidal cell. Note that the advantage of compound connectivity is present in the oblique dendrites to the same extent as the tuft dendrites (compare to results from Fig. 8). (b) Left, comparison between the compound synapse configuration and the scaled single input condition (note: the compound synapse pair is the same data from Fig. 8c).
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