Spine morphology of neurons in the Avian forebrain is affected by rearing conditions

Rollenhagen A, Bischof H-J (1994)
Behavioral and Neural Biology 62(2): 83-89.

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An area of the caudal forebrain of male zebra finches, the Archi-Neostriatum caudale (ANC), which is active during arousal (Bischof and Herrmann, 1986, 1988), shows rearing-dependent changes in neuron morphology (Rollenhagen and Bischof, 1991). We demonstrate here that rearing conditions also affect the shape of spines of one of the four ANC neuron types. This neuron type was examined in birds reared under five different conditions - in isolation (1), caged (2), in the aviary (3), and with social contact (4) or chasing (5) after an isolation period. Our results show that social experience determines the proportion of the three types of spines (thin, mushroom, and stubby) of the investigated neuron type. Rearing conditions and short social contact also affect the spine stem length of the thin spine type. Long-term isolation results in a reduction in number and elongation of shafts of thin spines, along with an increase of stubby-and mushroom-shaped spines. Short-term social contact or arousal enhances the number of mushroom- and thin-shaped spines and reduces the length of spine stems of thin spines. We suggest that isolation prevents the ANC neuron from reaching full development. The increase of mushroom and thin spine types due to social contact indicates that the stubby-shaped spines are replaced by, or transformed into, mushroom-shaped spines, and the mushroom-shaped spines are replaced by, or transformed into, thin spines. These results confirm and extend the experimental background for our hypothesis (Rollenhagen and Bischof, 1991) that social contact is necessary for development of normal morphology of ANC neurons.
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Rollenhagen A, Bischof H-J. Spine morphology of neurons in the Avian forebrain is affected by rearing conditions. Behavioral and Neural Biology. 1994;62(2):83-89.
Rollenhagen, A., & Bischof, H. - J. (1994). Spine morphology of neurons in the Avian forebrain is affected by rearing conditions. Behavioral and Neural Biology, 62(2), 83-89.
Rollenhagen, A., and Bischof, H. - J. (1994). Spine morphology of neurons in the Avian forebrain is affected by rearing conditions. Behavioral and Neural Biology 62, 83-89.
Rollenhagen, A., & Bischof, H.-J., 1994. Spine morphology of neurons in the Avian forebrain is affected by rearing conditions. Behavioral and Neural Biology, 62(2), p 83-89.
A. Rollenhagen and H.-J. Bischof, “Spine morphology of neurons in the Avian forebrain is affected by rearing conditions”, Behavioral and Neural Biology, vol. 62, 1994, pp. 83-89.
Rollenhagen, A., Bischof, H.-J.: Spine morphology of neurons in the Avian forebrain is affected by rearing conditions. Behavioral and Neural Biology. 62, 83-89 (1994).
Rollenhagen, Astrid, and Bischof, Hans-Joachim. “Spine morphology of neurons in the Avian forebrain is affected by rearing conditions”. Behavioral and Neural Biology 62.2 (1994): 83-89.
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30 References

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Neurohistologische Untersuchungen an kortikalen Pyramideneuronen der Ratte nach Rehabilitation von frühpostnataler Mangelernährung
Schönheit, Journal für Hirnforschung 29(), 1988
Neurohistologische Untersuchungen an Dendritenspines von Lamina V-Pyramidenneuronen der Ratte nach Rehabilitation von frühpostnataler Mangelernährung
Schönheit, Journal für Hirnforschung 30(), 1989

Siegel, 1976
Auditory imprinting leads to differential 2-deoxyglucose uptake and dendritic spine loss in the chick rostral forebrain
Wallhäusser, Developmental Brain Research 31(), 1987

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