[Bilateral imprinting in the chicks of precocial birds in response to monocular presentation of an object].

The paper deals with lateralization of memory of imprinted object in chickens of precocial birds after monocular imprinting. Significant preference is shown of the imprinted stimulus in situation of choice from "learned" and "unlearned" eye in 24 hours after imprinting. Lesion of the ventral hyperstriatum of "learned" hemisphere in 28-30 hours after learning retained the preference of the imprinted stimulus. Analogous lesions made directly after learning, eliminated this preference. Conclusion is made about bilateral imprinting at monocular stimulus presentation.