Two models for transforming auditory signals from head-centered to eye-centered coordinates.
Two models for transforming auditory signals from head-centered to eye-centered coordinates are presented. The vector subtraction model subtracts a rate-coded eye position signal from a topographically weighted auditory target position signal to produce a rate-code of target location with respect to the eye. The rate-code is converted into a place-code through a graded synaptic weighting scheme and inhibition. The dendrite model performs a mapping of head-centered auditory space onto the dendrites of eye-centered units. Individual dendrites serve as logical comparators of target location and eye position. Both models produce a topographic map of auditory space in eye-centered coordinates like that found in the primate superior colliculus. Either type can be converted into a model for transforming visual signals from retinal to head-centered coordinates.
Groh
J M
JM
Institute of Neurological Sciences, University of Pennsylvania, Philadelphia 19104.
Sparks
D L
DL
D001307:Auditory Perception / Q000502:physiology*; D001931:Brain Mapping; D008433:Mathematics; D008959:Models, Neurological; D013477:Superior Colliculi / Q000502:physiology*