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  • Title: Movement of neural activity on the superior colliculus motor map during gaze shifts.
    Author: Munoz DP, Pélisson D, Guitton D.
    Journal: Science; 1991 Mar 15; 251(4999):1358-60. PubMed ID: 2003221.
    Abstract:
    The superior colliculus contains neurons that cause displacements of the visual axis (gaze shifts). These cells are arranged topographically in a motor map on which the vector (amplitude and direction) of the coded movement varies continuously with location. How this spatial representation becomes a temporal code (frequency and duration) in the motoneurons is unknown. During a gaze shift, a zone of neural activity moved continuously on the map from an initial location, defining the vector of the desired gaze shift, to a final "zero" position containing neurons that were active during fixation. Thus, the spatial-temporal transformation may be accomplished by control of gaze throughout the spatial trajectory of activity on the motor map.
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