title: Innervation of motoneurons based on dendritic orientation.
abstract: 1. The distribution of terminals from vestibulospinal (VS) axons on the dendritic trees of neck motoneurons was determined by combining the anterograde transport of Phaseolus Vulgaris Leucoagglutinin (PHA-L) with intracellular staining techniques and three-dimensional reconstruction methods. 2. Contacts between VS axon terminals and dendrites were arranged in a nonuniform pattern that depended on the orientation (i.e., rostro-caudal vs. dorsolateral) of the dendrites. 3. This innervation pattern satisfies a critical structural condition necessary for selective nonlinear interactions between pairs of simultaneously active inputs to motoneurons.
authors.affiliation: Department of Physiology, Queen's University, Kingston, Ontario, Canada.
authors.forename: P K
authors.initials: PK
authors.lastname: Rose
authors.forename: T
authors.initials: T
authors.lastname: Jones
authors.forename: R
authors.initials: R
authors.lastname: Nirula
authors.forename: T
authors.initials: T
authors.lastname: Corneil
mesh_terms: D000818:Animals; D001369:Axons; D002415:Cats; D003712:Dendrites / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology*; D013194:Staining and Labeling; D014726:Vestibular Nuclei / Q000502:physiology