Seasonal recruitment of hippocampal neurons in adult free-ranging black- capped chickadees

Anat Barnea, F. Nottebohm

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים


Neurogenesis and neuronal replacement in a population of wild free- ranging animals are described. Our subjects were adult black-capped chickadees (Parus atricapillus). Neuronal birth dates were determined by a single systemic injection of [3H]thymidine, followed by release of the bird and its recapture 6 or more weeks later. Newly formed neurons appeared in the hippocampal complex during all times of year, but with a marked peak in the fall (October). New neurons were also added to the hippocampal complex of captive chickadees, but at levels only half as high as seen in the wild birds. Neurons born at different times of the year lived for a few months and then disappeared. We suggest that the neurons added are part of a process of neuronal replacement and that they are important for the acquisition of new spatial memories, a need that is particularly acute in the fall. Hormonal and experiential factors may determine the rate of neuronal replacement.

שפה מקוריתאנגלית
עמודים (מ-עד)11217-11221
מספר עמודים5
כתב עתProceedings of the National Academy of Sciences of the United States of America
מספר גיליון23
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 1994
פורסם באופן חיצוניכן

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להלן מוצגים תחומי המחקר של הפרסום 'Seasonal recruitment of hippocampal neurons in adult free-ranging black- capped chickadees'. יחד הם יוצרים טביעת אצבע ייחודית.

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