2020年3月
Chromatic information processing in the first optic ganglion of the butterfly Papilio xuthus
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
- ,
- ,
- 巻
- 206
- 号
- 2
- 開始ページ
- 199
- 終了ページ
- 216
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s00359-019-01390-w
- 出版者・発行元
- SPRINGER HEIDELBERG
The butterfly Papilio xuthus has acute tetrachromatic color vision. Its eyes are furnished with eight spectral classes of photoreceptors, situated in three types of ommatidia, randomly distributed in the retinal mosaic. Here, we investigated early chromatic information processing by recording spectral, angular, and polarization sensitivities of photoreceptors and lamina monopolar cells (LMCs). We identified three spectral classes of LMCs whose spectral sensitivities corresponded to weighted linear sums of the spectral sensitivities of the photoreceptors present in the three ommatidial types. In ~ 25% of the photoreceptor axons, the spectral sensitivities differed from those recorded at the photoreceptor cell bodies. These axons showed spectral opponency, most likely mediated by chloride ion currents through histaminergic interphotoreceptor synapses. The opponency was most prominent in the processes of the long visual fibers in the medulla. We recalculated the wavelength discrimination function using the noise-limited opponency model to reflect the new spectral sensitivity data and found that it matched well with the behaviorally determined function. Our results reveal opponency at the first stage of Papilio's visual system, indicating that spectral information is preprocessed with signals from photoreceptors within each ommatidium in the lamina, before being conveyed downstream by the long visual fibers and the LMCs.
- リンク情報
-
- DOI
- https://doi.org/10.1007/s00359-019-01390-w
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/31838572
- PubMed Central
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7069911
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000519473500008&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85076264863&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85076264863&origin=inward
- ID情報
-
- DOI : 10.1007/s00359-019-01390-w
- ISSN : 0340-7594
- eISSN : 1432-1351
- PubMed ID : 31838572
- PubMed Central 記事ID : PMC7069911
- SCOPUS ID : 85076264863
- Web of Science ID : WOS:000519473500008