title: Modulation of functional connectivity following visual adaptation: homeostasis in V1.
abstract: Sensory neurons exhibit remarkable adaptability in acquiring new optimal selectivity to unfamiliar features when a new stimulus becomes prevalent in the environment. In conventionally prepared adult anesthetized cats, we used visual adaptation to change the preferred orientation selectivity in V1 neurons. Cortical circuits are dominated by complex and intricate connections between neurons. Cross-correlation of cellular spike-trains discloses the putative functional connection between two neurons. We sought to investigate changes in these links following a 12 min uninterrupted application of a specific, usually non-preferred, orientation. We report that visual adaptation, mimicking training, modulates the magnitude of crosscorrelograms suggesting that the strength of inter-neuronal relationships is modified. While individual cell-pairs exhibit changes in their response correlation strength, the average correlation of the recorded cell cluster remains unchanged. Hence, visual adaptation induces plastic changes that impact the connectivity between neurons.
authors.affiliation: Laboratoire de Neurosciences de la Vision, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada H3C 3J7; Neurosciences Computationnelles et Traitement Intelligent des Signaux-NECOTIS, Université de Sherbrooke, Sherbrooke, QC, Canada.
authors.forename: L
authors.initials: L
authors.lastname: Bachatene
authors.affiliation: Laboratoire de Neurosciences de la Vision, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada H3C 3J7; Neurosciences Computationnelles et Traitement Intelligent des Signaux-NECOTIS, Université de Sherbrooke, Sherbrooke, QC, Canada.
authors.forename: V
authors.initials: V
authors.lastname: Bharmauria
authors.affiliation: Laboratoire de Neurosciences de la Vision, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada H3C 3J7; Neurosciences Computationnelles et Traitement Intelligent des Signaux-NECOTIS, Université de Sherbrooke, Sherbrooke, QC, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Cattan
authors.affiliation: Laboratoire de Neurosciences de la Vision, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada H3C 3J7; Neurosciences Computationnelles et Traitement Intelligent des Signaux-NECOTIS, Université de Sherbrooke, Sherbrooke, QC, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Rouat
authors.affiliation: Laboratoire de Neurosciences de la Vision, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, Canada H3C 3J7; Neurosciences Computationnelles et Traitement Intelligent des Signaux-NECOTIS, Université de Sherbrooke, Sherbrooke, QC, Canada. Electronic address: stephane.molotchnikoff@umontreal.ca.
authors.forename: S
authors.initials: S
authors.lastname: Molotchnikoff
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000818:Animals; D002415:Cats; D004594:Electrophysiology; D006706:Homeostasis / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology*; D009473:Neuronal Plasticity / Q000502:physiology*; D009949:Orientation / Q000502:physiology; D010775:Photic Stimulation; D011984:Sensory Receptor Cells / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology
keywords: Cortical plasticity; Crosscorrelation; Functional connectivity; Homeostasis; Neuronal network; Visual adaptation