Nervous Organization of the Pineal Complex in Lower Vertebrates
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概要
- 論文の詳細を見る
The morphological and electrophysiological aspects of the neuronal organization of the pineal complex are reviewed in fishes and amphibians. In the frog pineal organ, two types of intrapineal neurons different in size and shape are distinguished using the AChE and NADPH-diaphorase methods: multipolar cells (the first cell type) interpreted as intemeurons which receive inputs from a large number of photosensitive pinealocytes and transduce their responses to pseudounipolar cells (the second cell type) which send their axons to the brain. From this morphological perspective, the chromatic and achromatic responses obtained in the frog pineal complex are discussed. The distribution pattern of different types of nerve cells demonstrated by the AChE-method in the fish pineal complex varies widely not only between species but also regionally within the same pineal organ. Some unpublished results obtained from species which have not been investigated till now confirmed previous observations. In accordance with the results obtained by others in the retina, where more than twenty different types of amacrine cells and more than ten types of ganglion cells have been identified, our results indicate subpopulations of nerve cells in the fish pineal complex. Further investigations are necessary to complete our knowledge about the nervous organization in the fish pineal complex: this would be a precondition for a better understanding of the electrophysiological results.
- 社団法人日本動物学会の論文
- 1989-10-15
著者
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Kobayashi Hideshi
Research Laboratory, Zenyaku Kogyo Co.
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WAKE Kenjiro
Department of Anatomy II, School of Dental Medicine, Tsurumi University
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Wake Kenjiro
Department Of Anatomy Tokyo Medical And Dental University
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Ueck Manfred
Institute Of Anatomy And Cytobiology Justus Liebig University:research Professor At The Tokyo Medica
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Ueck Manfred
Institut Fur Anatomie Und Zellbiologie Justus-liebig-universitat
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Kobayashi Hideshi
Research Laboratory Zenyaku Kogyo Co.
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Kobayashi Hideshi
Research Laboratory Zenyaku Kogyo Co. Ltd.
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