Low-Frequency Local Field Potentials and Spikes in Primary Visual Cortex Convey Independent Visual Information

Local field potentials (LFPs) reflect subthreshold integrative processes that complement spike train measures. However, little is yet known about the differences between how LFPs and spikes encode rich naturalistic sensory stimuli. We addressed this question by recording LFPs and spikes from the pri...

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Bibliographic Details
Published in:The Journal of neuroscience 2008-05, Vol.28 (22), p.5696-5709
Main Authors: Belitski, Andrei, Gretton, Arthur, Magri, Cesare, Murayama, Yusuke, Montemurro, Marcelo A, Logothetis, Nikos K, Panzeri, Stefano
Format: Article
Language:English
Subjects:
Action Potentials - physiology
Animals
Brain Mapping
Evoked Potentials, Visual - physiology
Macaca
Macaca mulatta
Models, Neurological
Motion Perception - physiology
Photic Stimulation - methods
Reaction Time
Spectrum Analysis
Time Factors
Visual Cortex - physiology
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Summary:Local field potentials (LFPs) reflect subthreshold integrative processes that complement spike train measures. However, little is yet known about the differences between how LFPs and spikes encode rich naturalistic sensory stimuli. We addressed this question by recording LFPs and spikes from the primary visual cortex of anesthetized macaques while presenting a color movie. We then determined how the power of LFPs and spikes at different frequencies represents the visual features in the movie. We found that the most informative LFP frequency ranges were 1-8 and 60-100 Hz. LFPs in the range of 12-40 Hz carried little information about the stimulus, and may primarily reflect neuromodulatory inputs. Spike power was informative only at frequencies
ISSN:0270-6474
1529-2401
DOI:10.1523/JNEUROSCI.0009-08.2008