Jude Mitchell

  • E-mail: jude@salk.edu
  • Below is the routine used for rate-matched spike-spike coherence for pairs of neurons recorded simultaneously (used in analysis for 2009 paper on attention-dependent decorrelation of responses). Also included is one pair of units (msiv3_u8 and msiv3_u11, recorded simultaneously) that showed a significant attention dependent reduction in coherence at low frequencies (<10hz).
  • Spike-Spike Coherence with Rate Normalization: tapered_spike_coherence.m
  • Pair of example neurons (download data files to same directory):
  • msiv3_u8.mat
  • msiv3_u11.mat
  • In this paper we also compute spike count correlations. We did this on the raw spike counts, but also on spike counts that were normalized for slow trends in firing rate over consecutive trials (as might be caused by gradual changes in alertness during a session) and also for changes in rate that were time locked to stimulus onset (although we analyzed the sustained period of response, the temporal envelope is usually not completely flat over time). The routine below gives an example of the normalization of spike counts used in the paper for two artificially generated sets of spike counts with such slow trends in their rate.
  • Example of spike-count correlation computed after slow-trend normalization: example_remove_correlations.m