Category: Plexon

• Quartz clock accuracy matters in RF estimation

  To estimate visual receptive fields accurately with reverse correlation or other inference techniques, you need to know the exact timing of each stimulus and spike (give or take 10 ms). In my more naive days, I thought that I could use the nominal frame rate of the computer screen to figure out when each frame…

  May 17, 2011

• Plexon C++ API on 64-bit Linux

  Plexon has a C++ SDK which I was toying around with because all Plexon software including the Matlab API is Windows only, and all of our analyses run on 64-bit Ubuntu. So I figured the command line version of the .plx reader could be modified to run on Linux and suit our needs. Surprisingly, this…

  May 11, 2011

• Forwarding spikes in a Plexon system to some other computer over IP

  We have a 96-channel MAP Plexon system in the lab, which we use to record from an array implanted in V4. Originally we ran open-loop experiments (mapping stimuli and such), but soon we decided to perform closed loop experiments. Recording at 10kHz per channel sucks up a lot of CPU and thus the presentation software…

  March 9, 2011