Local field potentials in the gustatory cortex carry taste information.
Scientific Abstract
It has been recently shown that local field potentials (LFPs) from the auditory and visual cortices carry information about sensory stimuli, but whether this is a universal property of sensory cortices remains to be determined. Moreover, little is known about the temporal dynamics of sensory information contained in LFPs following stimulus onset. Here we investigated the time course of the amount of stimulus information in LFPs and spikes from the gustatory cortex of awake rats subjected to tastants and water delivery on the tongue. We found that the phase and amplitude of multiple LFP frequencies carry information about stimuli, which have specific time courses after stimulus delivery. The information carried by LFP phase and amplitude was independent within frequency bands, since the joint information exhibited neither synergy nor redundancy. Tastant information in LFPs was also independent and had a different time course from the information carried by spikes. These findings support the hypothesis that the brain uses different frequency channels to dynamically code for multiple features of a stimulus.
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Local field potentials in the gustatory cortex carry taste information.
Scientific Abstract
It has been recently shown that local field potentials (LFPs) from the auditory and visual cortices carry information about sensory stimuli, but whether this is a universal property of sensory cortices remains to be determined. Moreover, little is known about the temporal dynamics of sensory information contained in LFPs following stimulus onset. Here we investigated the time course of the amount of stimulus information in LFPs and spikes from the gustatory cortex of awake rats subjected to tastants and water delivery on the tongue. We found that the phase and amplitude of multiple LFP frequencies carry information about stimuli, which have specific time courses after stimulus delivery. The information carried by LFP phase and amplitude was independent within frequency bands, since the joint information exhibited neither synergy nor redundancy. Tastant information in LFPs was also independent and had a different time course from the information carried by spikes. These findings support the hypothesis that the brain uses different frequency channels to dynamically code for multiple features of a stimulus.
Citation
2014. J Neurosci, 34(26):8778-87.
DOI
10.1523/JNEUROSCI.0908-14.2014
Free Full Text at Europe PMC
PMC4069356Downloads
Similar content
Preprint
A learning-evoked slow-oscillatory architecture paces population activity for offline reactivation across the human medial temporal lobe
Paper
Extracting information from the shape and spatial distribution of evoked potentials.
2018. J Neurosci Methods, 296:12-22.
Free Full Text at Europe PMC
PMC5840508
Paper
Neuronal assembly detection and cell membership specification by principal component analysis.
2011. PLoS One, 6(6)e20996.
Free Full Text at Europe PMC
PMC3115970