PMID: 8950018Nov 1, 1996Paper

Activity-dependent plasticity in visual forebrain areas of the zebra finch

Behavioural Brain Research
Astrid Rollenhagen, H J Bischof

Abstract

It has previously been shown that the activity of some area of the forebrain of birds is dependent on the arousal level of the animal. Other areas do not show this dependency. This paper, on the basis of 2-DG experiments and spine density measurements on Golgi-impregnated tissue, shows that primary telencephalic target areas of the two visual pathways of zebra finch males are not dependent on arousal for activation. In contrast, secondary areas of both visual pathways show arousal-dependent activation. Only the secondary visual areas also show effects of rearing conditions on the spine density: isolation of the birds from day 40 reduces spine density in the hyperstriatum accessorium (HA) of the thalamofugal pathway, and enhances spine density in the lateral neo/hyperstriatum (LNH, tectofugal pathway) significantly from day 80, if compared to aviary-reared birds. A 1-week exposure to a female eliminates the isolation effects in both areas. A second isolation period again reduces the spine density in the HA, but does not enhance it again in the LNH. By comparison with previous studies, we conclude that the spine density in the HA reflects the complexity of the social environment. The irreversible reduction of spine density in the...Continue Reading

References

Dec 15, 1979·The Journal of Comparative Neurology·M L Feldman, A Peters
Oct 15, 1990·The Journal of Comparative Neurology·T Shimizu, H J Karten
May 1, 1986·The Journal of Comparative Neurology·C A Kitt, S E Brauth
May 1, 1988·Behavioral and Neural Biology·H J Bischof, K Herrmann
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Jan 1, 1983·Neuroscience and Biobehavioral Reviews·H J Bischof
Feb 10, 1983·The Journal of Comparative Neurology·P Bagnoli, A Burkhalter

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Citations

Mar 20, 2003·Behavioural Brain Research·Carsten Lieshoff, Hans-Joachim Bischof
Feb 22, 2000·Behavioural Brain Research·H J Bischof, A Rollenhagen
Oct 11, 2001·Proceedings of the National Academy of Sciences of the United States of America·E Zchori-FeinM S Hunter
May 9, 2006·Behavioural Brain Research·Christine HuchzermeyerHans-Joachim Bischof
Mar 8, 2000·Neurobiology of Learning and Memory·A Rollenhagen, H J Bischof
May 16, 2002·The Journal of Comparative Neurology·Monika Sadananda, Hans-Joachim Bischof
Apr 29, 1998·The Journal of Comparative Neurology·C V Mello, S Ribeiro

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