Category: LFPs

• New paper: sensorimotor integration with travelling waves

  Don’t you know about the wave? Everybody knows that the wave is the word. We have a new paper out in Neuron called “A sensorimotor role for traveling waves in visual cortex” (Zanos et al. 2015) [pdf]. Synchronous neuronal activity often propagates parallel to the cortical surface. These traveling waves are a fascinating example of the complex dynamics…

  February 11, 2015

• Modeling the Spatial Reach of LFP

  As regular readers will know, I’ve been intrigued by the nature of local field potential for some time. There’s a recent paper in Neuron by Lindén et al. that uses a modeling approach to explain the spatial reach of the LFP. This is a subject of some controversy; the spatial reach of the LFP has…

  May 15, 2012

• Spikes trigger LFP waves: the rebuttal

  Nauhaus, Busse, Carandini and Dario Ringach published an influential paper in 2009 with pretty convincing evidence that spikes trigger traveling waves of activity visible in LFPs; that these waves travel laterally; and because the dynamics of these waves change during stimulation compared to spontaneous activity, that stimulation modulates functional connectivity. This could imply that a…

  March 3, 2012

• Lecture notes on EEG/LFP analysis

  I was looking for some Matlab code for computing phase-locking histograms from LFPs and I stumbled upon these lecture notes for a psychology class at University of Arizona by John J.B. Allen. The Advanced Signal Processing class covers different approaches for computing inter-trial and inter-electrode phase locking. There’s some lecture slides, matlab code, and even…

  February 5, 2012