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  • Title: Two visual systems in the frog.
    Author: Ingle D.
    Journal: Science; 1973 Sep 14; 181(4104):1053-5. PubMed ID: 4542178.
    Abstract:
    After unilateral removal of the optic tectum in frogs, the cut optic tract regenerates to the remaining ipsilateral tectum. Although the orienting movementselicited by moving objects (food or threats) are now directed mirror-symmetrically to normal responses, these frogs correctly localize stationary objects as barriers. Apparently, thalamic and tectal visual mechanisms can operate independently.
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