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  • Title: Visual input to rat pineal.
    Author: Dafny N.
    Journal: Experientia; 1980 Nov 15; 36(11):1331-2. PubMed ID: 7004888.
    Abstract:
    Electrophysiological recordings from freely behaving rats, previously implanted stereotaxically with permanent electrodes in the pineal, ventromedial hypothalamus, caudate nucleus, lateral geniculate body and medial geniculate body were obtained. The pineal photic responses revealed 5 sequential components. Injection of a neuronal blocker at the level of the superior cervical ganglion did not alter the earlier photic responses, but did eliminate the late components (N2-P3) for 60-90 min after the injection. All of the other responses were unchanged during the experiment. The present experiments demonstrated that photic input travels to the pineal through two pathways.
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