4 ms·
The grantparent says as much ("... and single neuron activity"). I guess, this means careful separation in case of sparse signals, though I'm nowhere near quali
by posterboy 9y ago
The grantparent says as much ("... and single neuron activity"). I guess, this means careful separation in case of sparse signals, though I'm nowhere near qualified to judge.
My layman take: 9 Khz bandwidth in principle means resolution of 9000 evenly spaced peaks of different magnitude. Perhaps those correlate to different distances between each neuron and the sensor, especially if 16 channels allow for spatial resolution, and if the differences might actually be too small to resolve naively, I wouldn't doubt if I were told statistical tricks existed to filter single signals.
Overall, major features are interesting enough, I guess.
- hprotagonist 9y agoThe paper very carefully does not say single units were recorded: https://www.nature.com/articles/s41598-017-08078-8 https://www.nature.com/articles/s41598-017-08078-8 unless i'm totally missing it. Spike sorting was done with this project, which i have used and found to be quite good: https://github.com/cortex-lab/KiloSort https://github.com/cortex-lab/KiloSort 19 kHz sampling rate gives you a maximum temporal precision of ~50 ms, which is pretty good.
- joeyo 9y ago50 us, you mean. They claim a nicely low input referred noise (~4 uV), so 19 kHz should be great for spike detection, though as you note upthread it's a little low for spike sorting: it's nice to have at least 30 kHz. I wonder how much weight savings they got over combining a wireless chip and a bare-die Intan [1]. 1. http://intantech.com/products_RHD2000.html http://intantech.com/products_RHD2000.html
- hprotagonist 9y agoyes, 50us. I wonder if it's more of a form factor thing than a weight thing. I wonder how it holds up in multi-animal cages, too.