Uncovering the mysterious origins of local field potentials.
In this issue of Neuron, Katzner et al. use a combination of multielectrode recordings and optical imaging to determine the spatial extent of local field potential (LFP) activity in primary visual cortex. By estimating the orientation selectivity of stimulus-evoked LFP activity from the map of orientation preference obtained using optical imaging, they find that LFP selectivity is best fit using signals within 250 microm of the recording electrode.
Pesaran
Bijan
B
Center for Neural Science, New York University, New York, NY 10003, USA. bijan@nyu.edu
D000200:Action Potentials / Q000502:physiology; D000818:Animals; D004594:Electrophysiology / Q000379:methods; D008564:Membrane Potentials / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology*