title: Local field potentials in the gustatory cortex carry taste information.
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.
authors: Brain Institute, Federal University of Rio Grande do Norte, RN 59056-450, Brazil and.
authors: Rodrigo
authors: R
authors: Pavão
authors: Psychology Department and Volen Center for Complex Systems, Brandeis University, Waltham, Massachusetts 02453.
authors: Caitlin E
authors: CE
authors: Piette
authors: Brain Institute, Federal University of Rio Grande do Norte, RN 59056-450, Brazil and.
authors: Vítor
authors: V
authors: Lopes-dos-Santos
authors: Psychology Department and Volen Center for Complex Systems, Brandeis University, Waltham, Massachusetts 02453.
authors: Donald B
authors: DB
authors: Katz
authors: Brain Institute, Federal University of Rio Grande do Norte, RN 59056-450, Brazil and tort@neuro.ufrn.br.
authors: Adriano B L
authors: http://orcid.org/0000-0002-9877-7816
authors: AB
authors: Tort
mesh_terms: D000818:Animals; D005260:Female; D005625:Frontal Lobe / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D009474:Neurons / Q000502:physiology; D051381:Rats; D020318:Rats, Long-Evans; D013649:Taste / Q000502:physiology*; D055697:Taste Perception / Q000502:physiology*