Inhaltszusammenfassung

Summary Grasping an object or crossing a trench requires the integration of information on the operating distance distance of our limbs with precise distance estimation. The reach of our hands and step size of our legs legs are learned by the visual feedback we get during our actions. This implicit knowledge of our peripersonal peripersonal space is first acquired during infancy but will be continuously updated throughout our whole whole life [1]. In contrast, body size of holometabolous inse...Summary Grasping an object or crossing a trench requires the integration of information on the operating distance distance of our limbs with precise distance estimation. The reach of our hands and step size of our legs legs are learned by the visual feedback we get during our actions. This implicit knowledge of our peripersonal peripersonal space is first acquired during infancy but will be continuously updated throughout our whole whole life [1]. In contrast, body size of holometabolous insects does not change after metamorphosis metamorphosis; nevertheless, they do have to learn their body reaches at least once. The body size of of Drosophila imagines can vary by about 15% depending on environmental factors like food quality and and temperature [2]. To investigate how flies acquire knowledge about and memorize their body size, we studied their decisions to either refrain from or initiate climbing over gaps exceeding their body body size [3]. Naive (dark-reared) flies overestimate their size and have to learn it from the parallax parallax motion of the retinal images of objects in their environment while walking. Naive flies can can be trained in a striped arena and manipulated to underestimate their size, but once consolidated consolidated, this memory seems to last for a lifetime. Consolidation of this memory is stress sensitive only in the first 2 h after training but cannot be retrieved for the next 12 h. We have identified identified a set of intrinsic, lateral neurons of the protocerebral bridge of the central complex [4, 5] that depend on dCREB2 transcriptional activity for long-term memory consolidation and maintenance maintenance.» weiterlesen» einklappen

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Klassifikation

DDC Sachgruppe:
Landwirtschaft, Veterinärmedizin